./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.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_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/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_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/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_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/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 ab0b375f71eb557eddedfb6836efa7383e8c24249ba51445e071f612ca1dd29b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:52:27,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:52:27,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:52:27,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:52:27,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:52:27,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:52:27,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:52:27,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:52:27,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:52:27,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:52:27,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:52:27,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:52:27,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:52:27,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:52:27,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:52:27,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:52:27,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:52:27,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:52:27,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:52:27,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:52:27,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:52:27,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:52:27,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:52:27,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:52:27,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:52:27,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:52:27,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:52:27,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:52:27,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:52:27,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:52:27,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:52:27,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:52:27,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:52:27,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:52:27,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:52:27,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:52:27,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:52:27,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:52:27,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:52:27,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:52:27,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:52:27,884 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:52:27,919 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:52:27,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:52:27,920 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:52:27,921 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:52:27,921 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:52:27,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:52:27,930 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:52:27,930 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:52:27,931 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:52:27,931 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:52:27,932 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:52:27,932 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:52:27,932 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:52:27,932 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:52:27,933 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:52:27,933 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:52:27,933 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:52:27,933 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:52:27,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:52:27,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:52:27,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:52:27,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:52:27,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:52:27,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:52:27,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:52:27,936 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:52:27,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:52:27,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:52:27,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:52:27,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:52:27,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:52:27,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:52:27,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:52:27,939 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:52:27,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:52:27,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:52:27,940 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:52:27,940 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:52:27,940 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_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab0b375f71eb557eddedfb6836efa7383e8c24249ba51445e071f612ca1dd29b [2021-11-21 01:52:28,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:52:28,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:52:28,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:52:28,218 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:52:28,219 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:52:28,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i [2021-11-21 01:52:28,306 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/data/9b3678285/2e33f6b2ddfc488da2e81c163bf6df07/FLAG6a422ce07 [2021-11-21 01:52:29,420 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:52:29,420 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i [2021-11-21 01:52:29,508 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/data/9b3678285/2e33f6b2ddfc488da2e81c163bf6df07/FLAG6a422ce07 [2021-11-21 01:52:29,621 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/data/9b3678285/2e33f6b2ddfc488da2e81c163bf6df07 [2021-11-21 01:52:29,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:52:29,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:52:29,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:52:29,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:52:29,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:52:29,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:52:29" (1/1) ... [2021-11-21 01:52:29,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e54c97a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:29, skipping insertion in model container [2021-11-21 01:52:29,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:52:29" (1/1) ... [2021-11-21 01:52:29,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:52:29,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:52:37,327 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_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i[647538,647551] [2021-11-21 01:52:37,330 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_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i[647707,647720] [2021-11-21 01:52:37,331 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_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i[647874,647887] [2021-11-21 01:52:37,331 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_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i[648042,648055] [2021-11-21 01:52:37,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:52:37,487 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:52:38,272 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_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i[647538,647551] [2021-11-21 01:52:38,273 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_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i[647707,647720] [2021-11-21 01:52:38,273 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_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i[647874,647887] [2021-11-21 01:52:38,274 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_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i[648042,648055] [2021-11-21 01:52:38,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:52:38,791 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:52:38,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:38 WrapperNode [2021-11-21 01:52:38,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:52:38,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:52:38,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:52:38,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:52:38,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:38" (1/1) ... [2021-11-21 01:52:39,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:38" (1/1) ... [2021-11-21 01:52:39,614 INFO L137 Inliner]: procedures = 794, calls = 7637, calls flagged for inlining = 373, calls inlined = 338, statements flattened = 15779 [2021-11-21 01:52:39,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:52:39,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:52:39,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:52:39,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:52:39,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:38" (1/1) ... [2021-11-21 01:52:39,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:38" (1/1) ... [2021-11-21 01:52:39,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:38" (1/1) ... [2021-11-21 01:52:39,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:38" (1/1) ... [2021-11-21 01:52:40,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:38" (1/1) ... [2021-11-21 01:52:40,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:38" (1/1) ... [2021-11-21 01:52:40,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:38" (1/1) ... [2021-11-21 01:52:40,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:52:40,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:52:40,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:52:40,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:52:40,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:38" (1/1) ... [2021-11-21 01:52:40,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:52:40,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:52:40,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:52:40,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:52:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-21 01:52:40,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-21 01:52:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-21 01:52:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-21 01:52:40,542 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-21 01:52:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_irq [2021-11-21 01:52:40,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_irq [2021-11-21 01:52:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_both_serdes [2021-11-21 01:52:40,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_both_serdes [2021-11-21 01:52:40,543 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_xgmac_reg [2021-11-21 01:52:40,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_xgmac_reg [2021-11-21 01:52:40,543 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_reset [2021-11-21 01:52:40,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_reset [2021-11-21 01:52:40,543 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2021-11-21 01:52:40,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2021-11-21 01:52:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2021-11-21 01:52:40,544 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2021-11-21 01:52:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:52:40,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:52:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 01:52:40,544 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 01:52:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 01:52:40,544 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 01:52:40,545 INFO L130 BoogieDeclarations]: Found specification of procedure PageTail [2021-11-21 01:52:40,545 INFO L138 BoogieDeclarations]: Found implementation of procedure PageTail [2021-11-21 01:52:40,545 INFO L130 BoogieDeclarations]: Found specification of procedure ql_release_all [2021-11-21 01:52:40,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_release_all [2021-11-21 01:52:40,545 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_none_assert [2021-11-21 01:52:40,545 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_none_assert [2021-11-21 01:52:40,545 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 01:52:40,545 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 01:52:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 01:52:40,546 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 01:52:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure ql_dump_risc_ram_area [2021-11-21 01:52:40,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_dump_risc_ram_area [2021-11-21 01:52:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_other_func_reg [2021-11-21 01:52:40,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_other_func_reg [2021-11-21 01:52:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-21 01:52:40,546 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-21 01:52:40,547 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-21 01:52:40,547 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-21 01:52:40,547 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_xgmac_regs [2021-11-21 01:52:40,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_xgmac_regs [2021-11-21 01:52:40,547 INFO L130 BoogieDeclarations]: Found specification of procedure ql_update_buffer_queues [2021-11-21 01:52:40,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_update_buffer_queues [2021-11-21 01:52:40,547 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_cam_entries [2021-11-21 01:52:40,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_cam_entries [2021-11-21 01:52:40,548 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_mem_resources [2021-11-21 01:52:40,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_mem_resources [2021-11-21 01:52:40,548 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-21 01:52:40,548 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-21 01:52:40,548 INFO L130 BoogieDeclarations]: Found specification of procedure ql_eeh_close [2021-11-21 01:52:40,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_eeh_close [2021-11-21 01:52:40,548 INFO L130 BoogieDeclarations]: Found specification of procedure netif_receive_skb [2021-11-21 01:52:40,548 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_receive_skb [2021-11-21 01:52:40,548 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 01:52:40,549 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 01:52:40,549 INFO L130 BoogieDeclarations]: Found specification of procedure skb_record_rx_queue [2021-11-21 01:52:40,549 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_record_rx_queue [2021-11-21 01:52:40,549 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-21 01:52:40,549 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-21 01:52:40,549 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 01:52:40,549 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 01:52:40,549 INFO L130 BoogieDeclarations]: Found specification of procedure ql_build_coredump_seg_header [2021-11-21 01:52:40,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_build_coredump_seg_header [2021-11-21 01:52:40,550 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_close [2021-11-21 01:52:40,550 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_close [2021-11-21 01:52:40,550 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_mb_sts [2021-11-21 01:52:40,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_mb_sts [2021-11-21 01:52:40,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:52:40,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:52:40,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:52:40,550 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-21 01:52:40,551 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-21 01:52:40,551 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_offset [2021-11-21 01:52:40,551 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_offset [2021-11-21 01:52:40,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 01:52:40,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 01:52:40,551 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2021-11-21 01:52:40,551 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2021-11-21 01:52:40,551 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-21 01:52:40,552 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-21 01:52:40,552 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write32 [2021-11-21 01:52:40,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write32 [2021-11-21 01:52:40,552 INFO L130 BoogieDeclarations]: Found specification of procedure ql_cam_route_initialize [2021-11-21 01:52:40,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_cam_route_initialize [2021-11-21 01:52:40,552 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-21 01:52:40,552 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-21 01:52:40,552 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 01:52:40,552 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 01:52:40,553 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_other_func_reg_rdy [2021-11-21 01:52:40,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_other_func_reg_rdy [2021-11-21 01:52:40,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:52:40,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:52:40,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:52:40,553 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_mpi_reg [2021-11-21 01:52:40,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_mpi_reg [2021-11-21 01:52:40,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-21 01:52:40,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-21 01:52:40,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:52:40,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:52:40,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:52:40,554 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 01:52:40,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 01:52:40,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:52:40,554 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 01:52:40,555 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_unlock [2021-11-21 01:52:40,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_unlock [2021-11-21 01:52:40,555 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_8012_flash_params [2021-11-21 01:52:40,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_8012_flash_params [2021-11-21 01:52:40,555 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-21 01:52:40,555 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-21 01:52:40,555 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_other_func_serdes_reg [2021-11-21 01:52:40,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_other_func_serdes_reg [2021-11-21 01:52:40,555 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 01:52:40,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 01:52:40,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_hw_lock_of_ql_adapter [2021-11-21 01:52:40,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_hw_lock_of_ql_adapter [2021-11-21 01:52:40,556 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:52:40,556 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:52:40,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 01:52:40,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 01:52:40,556 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-11-21 01:52:40,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-11-21 01:52:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure ql_8000_port_initialize [2021-11-21 01:52:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_8000_port_initialize [2021-11-21 01:52:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 01:52:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 01:52:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_hw_lock_of_ql_adapter [2021-11-21 01:52:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_hw_lock_of_ql_adapter [2021-11-21 01:52:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:52:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:52:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure ql_8012_port_initialize [2021-11-21 01:52:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_8012_port_initialize [2021-11-21 01:52:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_flash_word [2021-11-21 01:52:40,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_flash_word [2021-11-21 01:52:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-21 01:52:40,558 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-21 01:52:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:52:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure csum_tcpudp_magic [2021-11-21 01:52:40,558 INFO L138 BoogieDeclarations]: Found implementation of procedure csum_tcpudp_magic [2021-11-21 01:52:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 01:52:40,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 01:52:40,559 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-11-21 01:52:40,559 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-11-21 01:52:40,559 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 01:52:40,559 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 01:52:40,559 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-21 01:52:40,559 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_cq_idx [2021-11-21 01:52:40,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_cq_idx [2021-11-21 01:52:40,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 01:52:40,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 01:52:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure ql_link_on [2021-11-21 01:52:40,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_link_on [2021-11-21 01:52:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure napi_gro_receive [2021-11-21 01:52:40,560 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_gro_receive [2021-11-21 01:52:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-21 01:52:40,560 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-21 01:52:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-11-21 01:52:40,560 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-11-21 01:52:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-21 01:52:40,561 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-21 01:52:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-21 01:52:40,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-21 01:52:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:52:40,561 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:52:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-21 01:52:40,561 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-21 01:52:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure ql_update_cq [2021-11-21 01:52:40,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_update_cq [2021-11-21 01:52:40,562 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-21 01:52:40,562 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-21 01:52:40,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:52:40,562 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 01:52:40,562 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 01:52:40,562 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_curr_sbuf [2021-11-21 01:52:40,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_curr_sbuf [2021-11-21 01:52:40,562 INFO L130 BoogieDeclarations]: Found specification of procedure ql_realign_skb [2021-11-21 01:52:40,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_realign_skb [2021-11-21 01:52:40,563 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_routing_entries [2021-11-21 01:52:40,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_routing_entries [2021-11-21 01:52:40,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:52:40,563 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-21 01:52:40,563 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-21 01:52:40,563 INFO L130 BoogieDeclarations]: Found specification of procedure ql_process_mac_split_rx_intr [2021-11-21 01:52:40,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_process_mac_split_rx_intr [2021-11-21 01:52:40,564 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_suspend [2021-11-21 01:52:40,564 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_suspend [2021-11-21 01:52:40,564 INFO L130 BoogieDeclarations]: Found specification of procedure __vlan_hwaccel_put_tag [2021-11-21 01:52:40,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __vlan_hwaccel_put_tag [2021-11-21 01:52:40,564 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-21 01:52:40,564 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-21 01:52:40,564 INFO L130 BoogieDeclarations]: Found specification of procedure ql_cancel_all_work_sync [2021-11-21 01:52:40,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_cancel_all_work_sync [2021-11-21 01:52:40,564 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 01:52:40,565 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 01:52:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-21 01:52:40,565 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-21 01:52:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2021-11-21 01:52:40,565 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2021-11-21 01:52:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-21 01:52:40,565 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-21 01:52:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-21 01:52:40,565 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-21 01:52:40,566 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-21 01:52:40,566 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-21 01:52:40,566 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-21 01:52:40,566 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-21 01:52:40,566 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 01:52:40,566 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 01:52:40,566 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_get_port_cfg [2021-11-21 01:52:40,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_get_port_cfg [2021-11-21 01:52:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:52:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-21 01:52:40,567 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-21 01:52:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:52:40,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:52:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_10_2 [2021-11-21 01:52:40,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_10_2 [2021-11-21 01:52:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_80 [2021-11-21 01:52:40,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_80 [2021-11-21 01:52:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_down [2021-11-21 01:52:40,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_down [2021-11-21 01:52:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure ql_queue_fw_error [2021-11-21 01:52:40,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_queue_fw_error [2021-11-21 01:52:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mpi_handler [2021-11-21 01:52:40,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mpi_handler [2021-11-21 01:52:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_xgmac_reg64 [2021-11-21 01:52:40,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_xgmac_reg64 [2021-11-21 01:52:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-21 01:52:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-21 01:52:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_set_mgmnt_traffic_ctl [2021-11-21 01:52:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_set_mgmnt_traffic_ctl [2021-11-21 01:52:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_other_func_reg [2021-11-21 01:52:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_other_func_reg [2021-11-21 01:52:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_reg_rdy [2021-11-21 01:52:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_reg_rdy [2021-11-21 01:52:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-21 01:52:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-21 01:52:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_set_led_cfg [2021-11-21 01:52:40,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_set_led_cfg [2021-11-21 01:52:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_cfg [2021-11-21 01:52:40,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_cfg [2021-11-21 01:52:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure ql_lbq_block_size [2021-11-21 01:52:40,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_lbq_block_size [2021-11-21 01:52:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 01:52:40,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 01:52:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure netif_get_num_default_rss_queues [2021-11-21 01:52:40,570 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_get_num_default_rss_queues [2021-11-21 01:52:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_ets_regs [2021-11-21 01:52:40,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_ets_regs [2021-11-21 01:52:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_cfg [2021-11-21 01:52:40,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_cfg [2021-11-21 01:52:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-21 01:52:40,571 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-21 01:52:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-21 01:52:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read32 [2021-11-21 01:52:40,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read32 [2021-11-21 01:52:40,572 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_intr_states [2021-11-21 01:52:40,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_intr_states [2021-11-21 01:52:40,572 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2021-11-21 01:52:40,572 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2021-11-21 01:52:40,572 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-21 01:52:40,572 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-21 01:52:40,572 INFO L130 BoogieDeclarations]: Found specification of procedure ql_timer [2021-11-21 01:52:40,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_timer [2021-11-21 01:52:40,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:52:40,572 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:52:40,573 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-21 01:52:40,573 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-21 01:52:40,573 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-21 01:52:40,573 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-21 01:52:40,573 INFO L130 BoogieDeclarations]: Found specification of procedure ql_enable_completion_interrupt [2021-11-21 01:52:40,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_enable_completion_interrupt [2021-11-21 01:52:40,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:52:40,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:52:40,573 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 01:52:40,573 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 01:52:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_send [2021-11-21 01:52:40,574 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_send [2021-11-21 01:52:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-21 01:52:40,574 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-21 01:52:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-21 01:52:40,574 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-21 01:52:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2021-11-21 01:52:40,574 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2021-11-21 01:52:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-21 01:52:40,575 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-21 01:52:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_regs_len [2021-11-21 01:52:40,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_regs_len [2021-11-21 01:52:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_io_resume [2021-11-21 01:52:40,575 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_io_resume [2021-11-21 01:52:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_5 [2021-11-21 01:52:40,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_5 [2021-11-21 01:52:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:52:40,575 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:52:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_shutdown [2021-11-21 01:52:40,576 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_shutdown [2021-11-21 01:52:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure ql_update_mac_hdr_len [2021-11-21 01:52:40,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_update_mac_hdr_len [2021-11-21 01:52:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mailbox_command [2021-11-21 01:52:40,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mailbox_command [2021-11-21 01:52:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:52:40,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:52:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_irq_mask [2021-11-21 01:52:40,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_irq_mask [2021-11-21 01:52:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-21 01:52:40,577 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-21 01:52:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 01:52:40,577 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 01:52:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:52:40,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:52:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure __qlge_vlan_rx_add_vid [2021-11-21 01:52:40,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __qlge_vlan_rx_add_vid [2021-11-21 01:52:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_5_2 [2021-11-21 01:52:40,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_5_2 [2021-11-21 01:52:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-21 01:52:40,578 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-21 01:52:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:52:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure ql_queue_asic_error [2021-11-21 01:52:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_queue_asic_error [2021-11-21 01:52:40,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-21 01:52:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-21 01:52:40,579 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_xgmac_reg [2021-11-21 01:52:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_xgmac_reg [2021-11-21 01:52:40,579 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_up [2021-11-21 01:52:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_up [2021-11-21 01:52:40,579 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:52:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:52:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_mac_addr_reg [2021-11-21 01:52:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_mac_addr_reg [2021-11-21 01:52:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2021-11-21 01:52:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2021-11-21 01:52:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:52:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_serdes_reg [2021-11-21 01:52:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_serdes_reg [2021-11-21 01:52:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 01:52:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 01:52:40,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:52:40,581 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_open [2021-11-21 01:52:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_open [2021-11-21 01:52:40,581 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 01:52:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 01:52:40,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:52:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:52:40,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 01:52:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 01:52:40,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:52:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:52:40,582 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_probe [2021-11-21 01:52:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_probe [2021-11-21 01:52:40,582 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_rx_buffers [2021-11-21 01:52:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_rx_buffers [2021-11-21 01:52:40,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_88 [2021-11-21 01:52:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_88 [2021-11-21 01:52:40,582 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_trylock [2021-11-21 01:52:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_trylock [2021-11-21 01:52:40,583 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_set_port_cfg [2021-11-21 01:52:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_set_port_cfg [2021-11-21 01:52:40,583 INFO L130 BoogieDeclarations]: Found specification of procedure __get_order [2021-11-21 01:52:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __get_order [2021-11-21 01:52:40,583 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_spinlock [2021-11-21 01:52:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_spinlock [2021-11-21 01:52:40,583 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-21 01:52:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-21 01:52:40,583 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:52:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:52:40,584 INFO L130 BoogieDeclarations]: Found specification of procedure ql_disable_completion_interrupt [2021-11-21 01:52:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_disable_completion_interrupt [2021-11-21 01:52:40,584 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_fill_page_desc [2021-11-21 01:52:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_fill_page_desc [2021-11-21 01:52:40,584 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-21 01:52:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-21 01:52:40,584 INFO L130 BoogieDeclarations]: Found specification of procedure ql_clear_routing_entries [2021-11-21 01:52:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_clear_routing_entries [2021-11-21 01:52:40,585 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-21 01:52:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-21 01:52:40,585 INFO L130 BoogieDeclarations]: Found specification of procedure ql_link_off [2021-11-21 01:52:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_link_off [2021-11-21 01:52:40,585 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-21 01:52:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-21 01:52:40,585 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-21 01:52:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-21 01:52:40,585 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_tx_timeout [2021-11-21 01:52:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_tx_timeout [2021-11-21 01:52:40,586 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-11-21 01:52:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-11-21 01:52:40,586 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_mpi_regs [2021-11-21 01:52:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_mpi_regs [2021-11-21 01:52:40,586 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-21 01:52:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-21 01:52:40,586 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-21 01:52:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-21 01:52:40,586 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_subqueue [2021-11-21 01:52:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_subqueue [2021-11-21 01:52:40,586 INFO L130 BoogieDeclarations]: Found specification of procedure ql_release_adapter_resources [2021-11-21 01:52:40,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_release_adapter_resources [2021-11-21 01:52:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:52:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:52:40,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:52:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-21 01:52:40,587 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-21 01:52:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_rx_resources [2021-11-21 01:52:40,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_rx_resources [2021-11-21 01:52:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:52:40,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:52:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-21 01:52:40,588 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-21 01:52:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure ql_disable_interrupts [2021-11-21 01:52:40,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_disable_interrupts [2021-11-21 01:52:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure ql_soft_reset_mpi_risc [2021-11-21 01:52:40,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_soft_reset_mpi_risc [2021-11-21 01:52:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-21 01:52:40,654 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-21 01:52:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_remove [2021-11-21 01:52:40,655 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_remove [2021-11-21 01:52:40,655 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_set_multicast_list [2021-11-21 01:52:40,655 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_set_multicast_list [2021-11-21 01:52:40,655 INFO L130 BoogieDeclarations]: Found specification of procedure ql_tx_ring_clean [2021-11-21 01:52:40,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_tx_ring_clean [2021-11-21 01:52:40,655 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-21 01:52:40,655 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-21 01:52:40,655 INFO L130 BoogieDeclarations]: Found specification of procedure skb_fill_page_desc [2021-11-21 01:52:40,655 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_fill_page_desc [2021-11-21 01:52:40,655 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_mpi_reg [2021-11-21 01:52:40,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_mpi_reg [2021-11-21 01:52:40,656 INFO L130 BoogieDeclarations]: Found specification of procedure ql_clean_inbound_rx_ring [2021-11-21 01:52:40,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_clean_inbound_rx_ring [2021-11-21 01:52:40,656 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_subqueue [2021-11-21 01:52:40,656 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_subqueue [2021-11-21 01:52:40,656 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 01:52:40,656 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 01:52:40,656 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-21 01:52:40,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-21 01:52:40,656 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-21 01:52:40,656 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-21 01:52:40,656 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 01:52:40,656 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 01:52:40,656 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2021-11-21 01:52:40,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2021-11-21 01:52:40,657 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-21 01:52:40,657 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-21 01:52:40,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:52:40,657 INFO L130 BoogieDeclarations]: Found specification of procedure ql_validate_flash [2021-11-21 01:52:40,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_validate_flash [2021-11-21 01:52:40,657 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-21 01:52:40,657 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-21 01:52:40,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-21 01:52:40,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-21 01:52:40,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:52:40,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:52:40,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 01:52:40,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 01:52:40,658 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_8000_flash_params [2021-11-21 01:52:40,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_8000_flash_params [2021-11-21 01:52:40,658 INFO L130 BoogieDeclarations]: Found specification of procedure ql_check_lb_frame [2021-11-21 01:52:40,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_check_lb_frame [2021-11-21 01:52:40,658 INFO L130 BoogieDeclarations]: Found specification of procedure ql_categorize_rx_err [2021-11-21 01:52:40,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_categorize_rx_err [2021-11-21 01:52:40,658 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 01:52:40,658 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 01:52:40,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_79 [2021-11-21 01:52:40,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_79 [2021-11-21 01:52:40,660 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_initialize [2021-11-21 01:52:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_initialize [2021-11-21 01:52:40,660 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-21 01:52:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-21 01:52:40,660 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_sh_reg [2021-11-21 01:52:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_sh_reg [2021-11-21 01:52:40,660 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-21 01:52:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-21 01:52:40,660 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_db_reg [2021-11-21 01:52:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_db_reg [2021-11-21 01:52:40,660 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:52:40,661 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:52:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 01:52:40,661 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 01:52:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-21 01:52:40,661 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-21 01:52:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure ql_unmap_send [2021-11-21 01:52:40,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_unmap_send [2021-11-21 01:52:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-21 01:52:40,661 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-21 01:52:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_routing_reg [2021-11-21 01:52:40,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_routing_reg [2021-11-21 01:52:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-21 01:52:40,662 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-21 01:52:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:52:40,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:52:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_mac_addr_reg [2021-11-21 01:52:40,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_mac_addr_reg [2021-11-21 01:52:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure ql_own_firmware [2021-11-21 01:52:40,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_own_firmware [2021-11-21 01:52:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-21 01:52:40,662 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-21 01:52:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_curr_lchunk [2021-11-21 01:52:40,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_curr_lchunk [2021-11-21 01:52:40,663 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 01:52:40,663 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 01:52:40,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:52:40,665 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_mac_addr [2021-11-21 01:52:40,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_mac_addr [2021-11-21 01:52:40,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:52:40,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:52:40,666 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_trap [2021-11-21 01:52:40,666 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_trap [2021-11-21 01:52:40,666 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_resume [2021-11-21 01:52:40,667 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_resume [2021-11-21 01:52:40,667 INFO L130 BoogieDeclarations]: Found specification of procedure ql_core_dump [2021-11-21 01:52:40,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_core_dump [2021-11-21 01:52:42,232 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:52:42,237 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:52:42,436 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:53:09,730 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:53:14,926 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:53:14,926 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-21 01:53:14,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:53:14 BoogieIcfgContainer [2021-11-21 01:53:14,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:53:14,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:53:14,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:53:14,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:53:14,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:52:29" (1/3) ... [2021-11-21 01:53:14,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e4242a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:53:14, skipping insertion in model container [2021-11-21 01:53:14,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:38" (2/3) ... [2021-11-21 01:53:14,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e4242a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:53:14, skipping insertion in model container [2021-11-21 01:53:14,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:53:14" (3/3) ... [2021-11-21 01:53:14,944 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i [2021-11-21 01:53:14,950 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:53:14,950 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 01:53:15,016 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:53:15,023 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 01:53:15,024 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 01:53:15,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 3646 states, 2162 states have (on average 1.301572617946346) internal successors, (2814), 2241 states have internal predecessors, (2814), 1236 states have call successors, (1236), 245 states have call predecessors, (1236), 244 states have return successors, (1230), 1211 states have call predecessors, (1230), 1230 states have call successors, (1230) [2021-11-21 01:53:15,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-21 01:53:15,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:53:15,117 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:53:15,118 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 01:53:15,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:53:15,123 INFO L85 PathProgramCache]: Analyzing trace with hash -232265319, now seen corresponding path program 1 times [2021-11-21 01:53:15,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:53:15,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143224733] [2021-11-21 01:53:15,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:53:15,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:53:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:53:16,124 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 01:53:16,125 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:53:16,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143224733] [2021-11-21 01:53:16,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143224733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:53:16,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:53:16,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:53:16,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101504465] [2021-11-21 01:53:16,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:53:16,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:53:16,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:53:16,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:53:16,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:53:16,176 INFO L87 Difference]: Start difference. First operand has 3646 states, 2162 states have (on average 1.301572617946346) internal successors, (2814), 2241 states have internal predecessors, (2814), 1236 states have call successors, (1236), 245 states have call predecessors, (1236), 244 states have return successors, (1230), 1211 states have call predecessors, (1230), 1230 states have call successors, (1230) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 01:53:20,120 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 01:53:22,296 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:53:30,542 WARN L515 Checker$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 01:53:33,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:53:34,797 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:53:38,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:53:40,844 WARN L515 Checker$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 01:53:43,930 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 01:53:46,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:53:46,880 INFO L93 Difference]: Finished difference Result 9001 states and 13029 transitions. [2021-11-21 01:53:46,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:53:46,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2021-11-21 01:53:46,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:53:46,954 INFO L225 Difference]: With dead ends: 9001 [2021-11-21 01:53:46,954 INFO L226 Difference]: Without dead ends: 5363 [2021-11-21 01:53:46,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 01:53:46,991 INFO L933 BasicCegarLoop]: 5290 mSDtfsCounter, 5226 mSDsluCounter, 14512 mSDsCounter, 0 mSdLazyCounter, 2656 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5248 SdHoareTripleChecker+Valid, 17923 SdHoareTripleChecker+Invalid, 2664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2656 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:53:46,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5248 Valid, 17923 Invalid, 2664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2656 Invalid, 7 Unknown, 0 Unchecked, 29.9s Time] [2021-11-21 01:53:47,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5363 states. [2021-11-21 01:53:47,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5363 to 5355. [2021-11-21 01:53:47,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5355 states, 3204 states have (on average 1.298689138576779) internal successors, (4161), 3316 states have internal predecessors, (4161), 1753 states have call successors, (1753), 396 states have call predecessors, (1753), 395 states have return successors, (1754), 1722 states have call predecessors, (1754), 1750 states have call successors, (1754) [2021-11-21 01:53:47,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5355 states to 5355 states and 7668 transitions. [2021-11-21 01:53:47,486 INFO L78 Accepts]: Start accepts. Automaton has 5355 states and 7668 transitions. Word has length 35 [2021-11-21 01:53:47,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:53:47,488 INFO L470 AbstractCegarLoop]: Abstraction has 5355 states and 7668 transitions. [2021-11-21 01:53:47,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 01:53:47,488 INFO L276 IsEmpty]: Start isEmpty. Operand 5355 states and 7668 transitions. [2021-11-21 01:53:47,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-21 01:53:47,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:53:47,492 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:53:47,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:53:47,492 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:53:47,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:53:47,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2126808635, now seen corresponding path program 1 times [2021-11-21 01:53:47,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:53:47,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205769683] [2021-11-21 01:53:47,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:53:47,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:53:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:53:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 01:53:48,402 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:53:48,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205769683] [2021-11-21 01:53:48,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205769683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:53:48,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:53:48,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:53:48,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107668790] [2021-11-21 01:53:48,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:53:48,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:53:48,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:53:48,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:53:48,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:53:48,408 INFO L87 Difference]: Start difference. First operand 5355 states and 7668 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-21 01:53:52,765 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 01:53:54,934 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:54:02,881 WARN L515 Checker$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 01:54:04,943 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:54:06,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:54:09,015 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:54:14,739 WARN L515 Checker$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 01:54:16,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:54:20,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:54:20,088 INFO L93 Difference]: Finished difference Result 5369 states and 7680 transitions. [2021-11-21 01:54:20,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:54:20,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 40 [2021-11-21 01:54:20,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:54:20,150 INFO L225 Difference]: With dead ends: 5369 [2021-11-21 01:54:20,150 INFO L226 Difference]: Without dead ends: 5367 [2021-11-21 01:54:20,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:54:20,158 INFO L933 BasicCegarLoop]: 5276 mSDtfsCounter, 5205 mSDsluCounter, 14476 mSDsCounter, 0 mSdLazyCounter, 2659 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5225 SdHoareTripleChecker+Valid, 17873 SdHoareTripleChecker+Invalid, 2664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2659 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:54:20,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5225 Valid, 17873 Invalid, 2664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2659 Invalid, 4 Unknown, 0 Unchecked, 31.2s Time] [2021-11-21 01:54:20,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5367 states. [2021-11-21 01:54:20,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5367 to 5359. [2021-11-21 01:54:20,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5359 states, 3207 states have (on average 1.2984097287184284) internal successors, (4164), 3319 states have internal predecessors, (4164), 1753 states have call successors, (1753), 397 states have call predecessors, (1753), 396 states have return successors, (1754), 1722 states have call predecessors, (1754), 1750 states have call successors, (1754) [2021-11-21 01:54:20,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5359 states to 5359 states and 7671 transitions. [2021-11-21 01:54:20,465 INFO L78 Accepts]: Start accepts. Automaton has 5359 states and 7671 transitions. Word has length 40 [2021-11-21 01:54:20,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:54:20,465 INFO L470 AbstractCegarLoop]: Abstraction has 5359 states and 7671 transitions. [2021-11-21 01:54:20,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-21 01:54:20,466 INFO L276 IsEmpty]: Start isEmpty. Operand 5359 states and 7671 transitions. [2021-11-21 01:54:20,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-21 01:54:20,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:54:20,468 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:54:20,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:54:20,469 INFO L402 AbstractCegarLoop]: === Iteration 3 === 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 01:54:20,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:54:20,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1113555495, now seen corresponding path program 1 times [2021-11-21 01:54:20,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:54:20,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690257128] [2021-11-21 01:54:20,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:54:20,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:54:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:54:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-21 01:54:21,035 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:54:21,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690257128] [2021-11-21 01:54:21,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690257128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:54:21,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:54:21,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:54:21,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997687397] [2021-11-21 01:54:21,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:54:21,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:54:21,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:54:21,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:54:21,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:54:21,040 INFO L87 Difference]: Start difference. First operand 5359 states and 7671 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-21 01:54:24,801 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 01:54:26,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:54:34,354 WARN L515 Checker$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 01:54:36,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:54:43,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:54:43,075 INFO L93 Difference]: Finished difference Result 7066 states and 10055 transitions. [2021-11-21 01:54:43,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:54:43,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 51 [2021-11-21 01:54:43,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:54:43,211 INFO L225 Difference]: With dead ends: 7066 [2021-11-21 01:54:43,212 INFO L226 Difference]: Without dead ends: 7064 [2021-11-21 01:54:43,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:54:43,217 INFO L933 BasicCegarLoop]: 5238 mSDtfsCounter, 5188 mSDsluCounter, 14379 mSDsCounter, 0 mSdLazyCounter, 2629 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5207 SdHoareTripleChecker+Valid, 17759 SdHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2629 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:54:43,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5207 Valid, 17759 Invalid, 2634 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2629 Invalid, 4 Unknown, 0 Unchecked, 21.6s Time] [2021-11-21 01:54:43,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7064 states. [2021-11-21 01:54:43,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7064 to 7056. [2021-11-21 01:54:43,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7056 states, 4238 states have (on average 1.2987258140632374) internal successors, (5504), 4385 states have internal predecessors, (5504), 2269 states have call successors, (2269), 547 states have call predecessors, (2269), 546 states have return successors, (2273), 2230 states have call predecessors, (2273), 2266 states have call successors, (2273) [2021-11-21 01:54:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7056 states to 7056 states and 10046 transitions. [2021-11-21 01:54:43,675 INFO L78 Accepts]: Start accepts. Automaton has 7056 states and 10046 transitions. Word has length 51 [2021-11-21 01:54:43,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:54:43,676 INFO L470 AbstractCegarLoop]: Abstraction has 7056 states and 10046 transitions. [2021-11-21 01:54:43,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-21 01:54:43,677 INFO L276 IsEmpty]: Start isEmpty. Operand 7056 states and 10046 transitions. [2021-11-21 01:54:43,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-21 01:54:43,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:54:43,690 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:43,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:54:43,690 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 01:54:43,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:54:43,691 INFO L85 PathProgramCache]: Analyzing trace with hash 244136311, now seen corresponding path program 1 times [2021-11-21 01:54:43,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:54:43,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141800772] [2021-11-21 01:54:43,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:54:43,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:54:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:54:44,246 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-21 01:54:44,247 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:54:44,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141800772] [2021-11-21 01:54:44,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141800772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:54:44,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:54:44,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:54:44,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540886492] [2021-11-21 01:54:44,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:54:44,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:54:44,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:54:44,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:54:44,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:54:44,252 INFO L87 Difference]: Start difference. First operand 7056 states and 10046 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-21 01:54:48,304 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 01:54:50,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:55:00,801 WARN L515 Checker$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 01:55:02,220 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:04,879 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:08,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:11,452 WARN L515 Checker$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 01:55:16,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:16,714 INFO L93 Difference]: Finished difference Result 13764 states and 19675 transitions. [2021-11-21 01:55:16,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:55:16,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 56 [2021-11-21 01:55:16,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:16,830 INFO L225 Difference]: With dead ends: 13764 [2021-11-21 01:55:16,830 INFO L226 Difference]: Without dead ends: 13762 [2021-11-21 01:55:16,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:55:16,839 INFO L933 BasicCegarLoop]: 7360 mSDtfsCounter, 5172 mSDsluCounter, 21958 mSDsCounter, 0 mSdLazyCounter, 3892 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5186 SdHoareTripleChecker+Valid, 26505 SdHoareTripleChecker+Invalid, 3900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3892 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:16,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5186 Valid, 26505 Invalid, 3900 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 3892 Invalid, 5 Unknown, 0 Unchecked, 31.7s Time] [2021-11-21 01:55:16,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13762 states. [2021-11-21 01:55:17,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13762 to 13751. [2021-11-21 01:55:17,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13751 states, 8269 states have (on average 1.300761881726932) internal successors, (10756), 8564 states have internal predecessors, (10756), 4412 states have call successors, (4412), 1075 states have call predecessors, (4412), 1067 states have return successors, (4497), 4321 states have call predecessors, (4497), 4406 states have call successors, (4497) [2021-11-21 01:55:17,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13751 states to 13751 states and 19665 transitions. [2021-11-21 01:55:17,612 INFO L78 Accepts]: Start accepts. Automaton has 13751 states and 19665 transitions. Word has length 56 [2021-11-21 01:55:17,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:17,612 INFO L470 AbstractCegarLoop]: Abstraction has 13751 states and 19665 transitions. [2021-11-21 01:55:17,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-21 01:55:17,613 INFO L276 IsEmpty]: Start isEmpty. Operand 13751 states and 19665 transitions. [2021-11-21 01:55:17,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-21 01:55:17,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:17,616 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:55:17,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:55:17,616 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:55:17,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:17,617 INFO L85 PathProgramCache]: Analyzing trace with hash 781398041, now seen corresponding path program 1 times [2021-11-21 01:55:17,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:55:17,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258287792] [2021-11-21 01:55:17,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:17,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:55:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:18,106 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-21 01:55:18,106 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:55:18,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258287792] [2021-11-21 01:55:18,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258287792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:18,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:18,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:55:18,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201858072] [2021-11-21 01:55:18,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:18,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:55:18,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:55:18,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:55:18,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:55:18,110 INFO L87 Difference]: Start difference. First operand 13751 states and 19665 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-21 01:55:21,721 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:24,745 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:55:26,776 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:55:34,154 WARN L515 Checker$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 01:55:36,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:40,740 WARN L515 Checker$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 01:55:44,284 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:45,832 WARN L515 Checker$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 01:55:48,301 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:50,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:55:52,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:55:54,790 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:55:55,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:55,803 INFO L93 Difference]: Finished difference Result 17068 states and 24317 transitions. [2021-11-21 01:55:55,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:55:55,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 55 [2021-11-21 01:55:55,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:55,903 INFO L225 Difference]: With dead ends: 17068 [2021-11-21 01:55:55,903 INFO L226 Difference]: Without dead ends: 17066 [2021-11-21 01:55:55,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:55:55,919 INFO L933 BasicCegarLoop]: 5063 mSDtfsCounter, 5198 mSDsluCounter, 13973 mSDsCounter, 0 mSdLazyCounter, 2529 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5214 SdHoareTripleChecker+Valid, 17239 SdHoareTripleChecker+Invalid, 2539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2529 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:55,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5214 Valid, 17239 Invalid, 2539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2529 Invalid, 9 Unknown, 0 Unchecked, 37.2s Time] [2021-11-21 01:55:55,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17066 states. [2021-11-21 01:55:56,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17066 to 17062. [2021-11-21 01:55:56,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17062 states, 10287 states have (on average 1.3010595897735004) internal successors, (13384), 10652 states have internal predecessors, (13384), 5411 states have call successors, (5411), 1370 states have call predecessors, (5411), 1361 states have return successors, (5517), 5302 states have call predecessors, (5517), 5405 states have call successors, (5517) [2021-11-21 01:55:56,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17062 states to 17062 states and 24312 transitions. [2021-11-21 01:55:56,901 INFO L78 Accepts]: Start accepts. Automaton has 17062 states and 24312 transitions. Word has length 55 [2021-11-21 01:55:56,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:56,902 INFO L470 AbstractCegarLoop]: Abstraction has 17062 states and 24312 transitions. [2021-11-21 01:55:56,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-21 01:55:56,902 INFO L276 IsEmpty]: Start isEmpty. Operand 17062 states and 24312 transitions. [2021-11-21 01:55:56,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-21 01:55:56,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:56,905 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:55:56,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:55:56,906 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 01:55:56,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:56,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1647533499, now seen corresponding path program 1 times [2021-11-21 01:55:56,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:55:56,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601150384] [2021-11-21 01:55:56,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:56,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:55:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:57,319 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-21 01:55:57,319 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:55:57,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601150384] [2021-11-21 01:55:57,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601150384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:57,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:57,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:55:57,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731899657] [2021-11-21 01:55:57,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:57,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:55:57,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:55:57,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:55:57,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:55:57,322 INFO L87 Difference]: Start difference. First operand 17062 states and 24312 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 01:56:00,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:02,819 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:56:09,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:11,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:14,087 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:15,928 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:18,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:25,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:25,946 INFO L93 Difference]: Finished difference Result 17077 states and 24324 transitions. [2021-11-21 01:56:25,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:56:25,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 60 [2021-11-21 01:56:25,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:26,038 INFO L225 Difference]: With dead ends: 17077 [2021-11-21 01:56:26,038 INFO L226 Difference]: Without dead ends: 17075 [2021-11-21 01:56:26,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:56:26,051 INFO L933 BasicCegarLoop]: 5411 mSDtfsCounter, 5205 mSDsluCounter, 14810 mSDsCounter, 0 mSdLazyCounter, 2756 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5221 SdHoareTripleChecker+Valid, 18278 SdHoareTripleChecker+Invalid, 2760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2756 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:26,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5221 Valid, 18278 Invalid, 2760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2756 Invalid, 3 Unknown, 0 Unchecked, 28.0s Time] [2021-11-21 01:56:26,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17075 states. [2021-11-21 01:56:26,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17075 to 17070. [2021-11-21 01:56:26,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17070 states, 10293 states have (on average 1.3008840959875643) internal successors, (13390), 10658 states have internal predecessors, (13390), 5411 states have call successors, (5411), 1372 states have call predecessors, (5411), 1363 states have return successors, (5517), 5302 states have call predecessors, (5517), 5405 states have call successors, (5517) [2021-11-21 01:56:27,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17070 states to 17070 states and 24318 transitions. [2021-11-21 01:56:27,053 INFO L78 Accepts]: Start accepts. Automaton has 17070 states and 24318 transitions. Word has length 60 [2021-11-21 01:56:27,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:27,054 INFO L470 AbstractCegarLoop]: Abstraction has 17070 states and 24318 transitions. [2021-11-21 01:56:27,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 01:56:27,054 INFO L276 IsEmpty]: Start isEmpty. Operand 17070 states and 24318 transitions. [2021-11-21 01:56:27,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-21 01:56:27,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:27,057 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:56:27,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:56:27,058 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 01:56:27,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:27,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1646476455, now seen corresponding path program 1 times [2021-11-21 01:56:27,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:56:27,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720312695] [2021-11-21 01:56:27,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:27,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:56:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:27,463 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-21 01:56:27,463 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:56:27,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720312695] [2021-11-21 01:56:27,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720312695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:56:27,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:56:27,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:56:27,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135192628] [2021-11-21 01:56:27,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:56:27,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:56:27,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:56:27,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:56:27,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:56:27,466 INFO L87 Difference]: Start difference. First operand 17070 states and 24318 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-21 01:56:31,183 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 01:56:33,317 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:56:37,955 WARN L515 Checker$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 01:56:42,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:44,588 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:47,419 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:49,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:56,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:56,355 INFO L93 Difference]: Finished difference Result 17085 states and 24330 transitions. [2021-11-21 01:56:56,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:56:56,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 65 [2021-11-21 01:56:56,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:56,442 INFO L225 Difference]: With dead ends: 17085 [2021-11-21 01:56:56,442 INFO L226 Difference]: Without dead ends: 17083 [2021-11-21 01:56:56,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:56:56,452 INFO L933 BasicCegarLoop]: 5411 mSDtfsCounter, 5205 mSDsluCounter, 14809 mSDsCounter, 0 mSdLazyCounter, 2754 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5220 SdHoareTripleChecker+Valid, 18278 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2754 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:56,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5220 Valid, 18278 Invalid, 2759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2754 Invalid, 4 Unknown, 0 Unchecked, 28.2s Time] [2021-11-21 01:56:56,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17083 states. [2021-11-21 01:56:57,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17083 to 17078. [2021-11-21 01:56:57,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17078 states, 10299 states have (on average 1.3007088066802601) internal successors, (13396), 10664 states have internal predecessors, (13396), 5411 states have call successors, (5411), 1374 states have call predecessors, (5411), 1365 states have return successors, (5517), 5302 states have call predecessors, (5517), 5405 states have call successors, (5517) [2021-11-21 01:56:57,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17078 states to 17078 states and 24324 transitions. [2021-11-21 01:56:57,361 INFO L78 Accepts]: Start accepts. Automaton has 17078 states and 24324 transitions. Word has length 65 [2021-11-21 01:56:57,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:57,362 INFO L470 AbstractCegarLoop]: Abstraction has 17078 states and 24324 transitions. [2021-11-21 01:56:57,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-21 01:56:57,363 INFO L276 IsEmpty]: Start isEmpty. Operand 17078 states and 24324 transitions. [2021-11-21 01:56:57,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-21 01:56:57,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:57,364 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:57,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:56:57,365 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 01:56:57,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:57,366 INFO L85 PathProgramCache]: Analyzing trace with hash 548074743, now seen corresponding path program 1 times [2021-11-21 01:56:57,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:56:57,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669764508] [2021-11-21 01:56:57,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:57,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:56:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:57,927 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-21 01:56:57,928 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:56:57,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669764508] [2021-11-21 01:56:57,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669764508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:56:57,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:56:57,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:56:57,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4339618] [2021-11-21 01:56:57,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:56:57,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:56:57,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:56:57,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:56:57,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:56:57,930 INFO L87 Difference]: Start difference. First operand 17078 states and 24324 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-21 01:57:01,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:57:03,519 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:57:11,218 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:57:13,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:57:17,398 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 01:57:22,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:22,602 INFO L93 Difference]: Finished difference Result 17093 states and 24336 transitions. [2021-11-21 01:57:22,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:57:22,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 76 [2021-11-21 01:57:22,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:22,695 INFO L225 Difference]: With dead ends: 17093 [2021-11-21 01:57:22,695 INFO L226 Difference]: Without dead ends: 17091 [2021-11-21 01:57:22,706 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 01:57:22,707 INFO L933 BasicCegarLoop]: 5406 mSDtfsCounter, 5188 mSDsluCounter, 14791 mSDsCounter, 0 mSdLazyCounter, 2742 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5202 SdHoareTripleChecker+Valid, 18263 SdHoareTripleChecker+Invalid, 2748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2742 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:22,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5202 Valid, 18263 Invalid, 2748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2742 Invalid, 5 Unknown, 0 Unchecked, 24.1s Time] [2021-11-21 01:57:22,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17091 states. [2021-11-21 01:57:23,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17091 to 17086. [2021-11-21 01:57:23,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17086 states, 10305 states have (on average 1.3005337214944201) internal successors, (13402), 10670 states have internal predecessors, (13402), 5411 states have call successors, (5411), 1376 states have call predecessors, (5411), 1367 states have return successors, (5517), 5302 states have call predecessors, (5517), 5405 states have call successors, (5517) [2021-11-21 01:57:23,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17086 states to 17086 states and 24330 transitions. [2021-11-21 01:57:23,616 INFO L78 Accepts]: Start accepts. Automaton has 17086 states and 24330 transitions. Word has length 76 [2021-11-21 01:57:23,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:23,617 INFO L470 AbstractCegarLoop]: Abstraction has 17086 states and 24330 transitions. [2021-11-21 01:57:23,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-21 01:57:23,617 INFO L276 IsEmpty]: Start isEmpty. Operand 17086 states and 24330 transitions. [2021-11-21 01:57:23,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-21 01:57:23,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:23,619 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:57:23,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:57:23,619 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 01:57:23,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:23,620 INFO L85 PathProgramCache]: Analyzing trace with hash -198642023, now seen corresponding path program 1 times [2021-11-21 01:57:23,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:23,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84547193] [2021-11-21 01:57:23,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:23,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:24,027 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-21 01:57:24,027 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:24,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84547193] [2021-11-21 01:57:24,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84547193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:24,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:24,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:57:24,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958975531] [2021-11-21 01:57:24,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:24,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:57:24,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:24,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:57:24,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:57:24,031 INFO L87 Difference]: Start difference. First operand 17086 states and 24330 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-21 01:57:28,393 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 01:57:30,539 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:57:38,080 WARN L515 Checker$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 01:57:40,909 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:57:42,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:57:45,770 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:57:47,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:57:54,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:54,513 INFO L93 Difference]: Finished difference Result 17101 states and 24342 transitions. [2021-11-21 01:57:54,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:57:54,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 75 [2021-11-21 01:57:54,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:54,595 INFO L225 Difference]: With dead ends: 17101 [2021-11-21 01:57:54,595 INFO L226 Difference]: Without dead ends: 17099 [2021-11-21 01:57:54,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:57:54,607 INFO L933 BasicCegarLoop]: 5411 mSDtfsCounter, 5205 mSDsluCounter, 14810 mSDsCounter, 0 mSdLazyCounter, 2754 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5218 SdHoareTripleChecker+Valid, 18278 SdHoareTripleChecker+Invalid, 2760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2754 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:54,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5218 Valid, 18278 Invalid, 2760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2754 Invalid, 5 Unknown, 0 Unchecked, 29.8s Time] [2021-11-21 01:57:54,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17099 states. [2021-11-21 01:57:55,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17099 to 17094. [2021-11-21 01:57:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17094 states, 10311 states have (on average 1.3003588400737076) internal successors, (13408), 10676 states have internal predecessors, (13408), 5411 states have call successors, (5411), 1378 states have call predecessors, (5411), 1369 states have return successors, (5517), 5302 states have call predecessors, (5517), 5405 states have call successors, (5517) [2021-11-21 01:57:55,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17094 states to 17094 states and 24336 transitions. [2021-11-21 01:57:55,446 INFO L78 Accepts]: Start accepts. Automaton has 17094 states and 24336 transitions. Word has length 75 [2021-11-21 01:57:55,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:55,447 INFO L470 AbstractCegarLoop]: Abstraction has 17094 states and 24336 transitions. [2021-11-21 01:57:55,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-21 01:57:55,447 INFO L276 IsEmpty]: Start isEmpty. Operand 17094 states and 24336 transitions. [2021-11-21 01:57:55,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-21 01:57:55,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:55,449 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:57:55,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:57:55,449 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 01:57:55,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:55,450 INFO L85 PathProgramCache]: Analyzing trace with hash -943502651, now seen corresponding path program 1 times [2021-11-21 01:57:55,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:55,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88273848] [2021-11-21 01:57:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:55,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:56,048 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-21 01:57:56,049 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:56,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88273848] [2021-11-21 01:57:56,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88273848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:56,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:56,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:57:56,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253504296] [2021-11-21 01:57:56,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:56,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:57:56,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:56,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:57:56,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:57:56,051 INFO L87 Difference]: Start difference. First operand 17094 states and 24336 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-21 01:57:59,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:58:02,725 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:58:04,763 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:58:12,380 WARN L515 Checker$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 01:58:14,431 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:58:21,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:58:23,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:58:25,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:58:27,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:58:27,028 INFO L93 Difference]: Finished difference Result 20390 states and 28964 transitions. [2021-11-21 01:58:27,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:58:27,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 80 [2021-11-21 01:58:27,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:58:27,094 INFO L225 Difference]: With dead ends: 20390 [2021-11-21 01:58:27,095 INFO L226 Difference]: Without dead ends: 20388 [2021-11-21 01:58:27,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:58:27,103 INFO L933 BasicCegarLoop]: 5061 mSDtfsCounter, 5194 mSDsluCounter, 13962 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5203 SdHoareTripleChecker+Valid, 17228 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:58:27,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5203 Valid, 17228 Invalid, 2537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2528 Invalid, 8 Unknown, 0 Unchecked, 30.3s Time] [2021-11-21 01:58:27,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20388 states. [2021-11-21 01:58:27,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20388 to 20384. [2021-11-21 01:58:27,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20384 states, 12315 states have (on average 1.3006902151847342) internal successors, (16018), 12750 states have internal predecessors, (16018), 6406 states have call successors, (6406), 1671 states have call predecessors, (6406), 1660 states have return successors, (6535), 6278 states have call predecessors, (6535), 6400 states have call successors, (6535) [2021-11-21 01:58:28,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20384 states to 20384 states and 28959 transitions. [2021-11-21 01:58:28,044 INFO L78 Accepts]: Start accepts. Automaton has 20384 states and 28959 transitions. Word has length 80 [2021-11-21 01:58:28,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:58:28,045 INFO L470 AbstractCegarLoop]: Abstraction has 20384 states and 28959 transitions. [2021-11-21 01:58:28,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-21 01:58:28,045 INFO L276 IsEmpty]: Start isEmpty. Operand 20384 states and 28959 transitions. [2021-11-21 01:58:28,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-21 01:58:28,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:58:28,047 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:28,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:58:28,048 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 01:58:28,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:58:28,048 INFO L85 PathProgramCache]: Analyzing trace with hash 996092199, now seen corresponding path program 1 times [2021-11-21 01:58:28,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:58:28,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201758731] [2021-11-21 01:58:28,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:58:28,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:58:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:58:28,456 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-21 01:58:28,456 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:58:28,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201758731] [2021-11-21 01:58:28,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201758731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:58:28,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:58:28,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:58:28,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135435010] [2021-11-21 01:58:28,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:58:28,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:58:28,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:58:28,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:58:28,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:58:28,459 INFO L87 Difference]: Start difference. First operand 20384 states and 28959 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-21 01:58:32,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:58:34,679 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:58:42,787 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:58:44,843 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:58:52,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:58:52,451 INFO L93 Difference]: Finished difference Result 20399 states and 28971 transitions. [2021-11-21 01:58:52,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:58:52,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 91 [2021-11-21 01:58:52,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:58:52,531 INFO L225 Difference]: With dead ends: 20399 [2021-11-21 01:58:52,531 INFO L226 Difference]: Without dead ends: 20397 [2021-11-21 01:58:52,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:58:52,542 INFO L933 BasicCegarLoop]: 5405 mSDtfsCounter, 5188 mSDsluCounter, 14785 mSDsCounter, 0 mSdLazyCounter, 2737 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5199 SdHoareTripleChecker+Valid, 18260 SdHoareTripleChecker+Invalid, 2742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2737 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:58:52,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5199 Valid, 18260 Invalid, 2742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2737 Invalid, 4 Unknown, 0 Unchecked, 23.1s Time] [2021-11-21 01:58:52,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20397 states. [2021-11-21 01:58:53,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20397 to 20392. [2021-11-21 01:58:53,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20392 states, 12321 states have (on average 1.3005437870302736) internal successors, (16024), 12756 states have internal predecessors, (16024), 6406 states have call successors, (6406), 1673 states have call predecessors, (6406), 1662 states have return successors, (6535), 6278 states have call predecessors, (6535), 6400 states have call successors, (6535) [2021-11-21 01:58:53,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20392 states to 20392 states and 28965 transitions. [2021-11-21 01:58:53,683 INFO L78 Accepts]: Start accepts. Automaton has 20392 states and 28965 transitions. Word has length 91 [2021-11-21 01:58:53,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:58:53,684 INFO L470 AbstractCegarLoop]: Abstraction has 20392 states and 28965 transitions. [2021-11-21 01:58:53,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-21 01:58:53,684 INFO L276 IsEmpty]: Start isEmpty. Operand 20392 states and 28965 transitions. [2021-11-21 01:58:53,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-21 01:58:53,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:58:53,686 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:53,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 01:58:53,686 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 01:58:53,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:58:53,687 INFO L85 PathProgramCache]: Analyzing trace with hash -685330313, now seen corresponding path program 1 times [2021-11-21 01:58:53,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:58:53,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703880135] [2021-11-21 01:58:53,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:58:53,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:58:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:58:54,059 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-21 01:58:54,059 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:58:54,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703880135] [2021-11-21 01:58:54,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703880135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:58:54,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:58:54,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:58:54,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843634804] [2021-11-21 01:58:54,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:58:54,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:58:54,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:58:54,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:58:54,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:58:54,061 INFO L87 Difference]: Start difference. First operand 20392 states and 28965 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-21 01:58:58,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:59:00,180 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:59:07,751 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:59:08,880 WARN L515 Checker$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 01:59:11,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:59:13,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:59:15,455 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:59:18,146 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:59:25,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:25,291 INFO L93 Difference]: Finished difference Result 20408 states and 28978 transitions. [2021-11-21 01:59:25,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:59:25,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 96 [2021-11-21 01:59:25,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:25,357 INFO L225 Difference]: With dead ends: 20408 [2021-11-21 01:59:25,357 INFO L226 Difference]: Without dead ends: 20406 [2021-11-21 01:59:25,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:59:25,366 INFO L933 BasicCegarLoop]: 5411 mSDtfsCounter, 5201 mSDsluCounter, 14810 mSDsCounter, 0 mSdLazyCounter, 2755 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5211 SdHoareTripleChecker+Valid, 18278 SdHoareTripleChecker+Invalid, 2760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2755 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:25,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5211 Valid, 18278 Invalid, 2760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2755 Invalid, 4 Unknown, 0 Unchecked, 30.3s Time] [2021-11-21 01:59:25,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20406 states. [2021-11-21 01:59:26,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20406 to 20400. [2021-11-21 01:59:26,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20400 states, 12327 states have (on average 1.3003975014196478) internal successors, (16030), 12762 states have internal predecessors, (16030), 6406 states have call successors, (6406), 1675 states have call predecessors, (6406), 1664 states have return successors, (6535), 6278 states have call predecessors, (6535), 6400 states have call successors, (6535) [2021-11-21 01:59:26,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20400 states to 20400 states and 28971 transitions. [2021-11-21 01:59:26,402 INFO L78 Accepts]: Start accepts. Automaton has 20400 states and 28971 transitions. Word has length 96 [2021-11-21 01:59:26,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:26,402 INFO L470 AbstractCegarLoop]: Abstraction has 20400 states and 28971 transitions. [2021-11-21 01:59:26,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-21 01:59:26,403 INFO L276 IsEmpty]: Start isEmpty. Operand 20400 states and 28971 transitions. [2021-11-21 01:59:26,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-21 01:59:26,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:26,407 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:26,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 01:59:26,407 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:59:26,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:26,408 INFO L85 PathProgramCache]: Analyzing trace with hash -2069283559, now seen corresponding path program 1 times [2021-11-21 01:59:26,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:26,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608088671] [2021-11-21 01:59:26,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:26,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:26,845 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-21 01:59:26,845 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:26,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608088671] [2021-11-21 01:59:26,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608088671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:26,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:59:26,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:59:26,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033856288] [2021-11-21 01:59:26,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:26,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:59:26,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:26,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:59:26,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:59:26,848 INFO L87 Difference]: Start difference. First operand 20400 states and 28971 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-21 01:59:30,704 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:59:32,860 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:59:41,426 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:59:43,483 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:59:49,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:59:50,790 WARN L515 Checker$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 01:59:53,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:53,919 INFO L93 Difference]: Finished difference Result 20415 states and 28983 transitions. [2021-11-21 01:59:53,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:59:53,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 95 [2021-11-21 01:59:53,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:53,973 INFO L225 Difference]: With dead ends: 20415 [2021-11-21 01:59:53,973 INFO L226 Difference]: Without dead ends: 20413 [2021-11-21 01:59:53,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:59:53,979 INFO L933 BasicCegarLoop]: 5405 mSDtfsCounter, 5192 mSDsluCounter, 14785 mSDsCounter, 0 mSdLazyCounter, 2736 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5201 SdHoareTripleChecker+Valid, 18260 SdHoareTripleChecker+Invalid, 2742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2736 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:53,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5201 Valid, 18260 Invalid, 2742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2736 Invalid, 5 Unknown, 0 Unchecked, 26.1s Time] [2021-11-21 01:59:53,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20413 states. [2021-11-21 01:59:54,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20413 to 20408. [2021-11-21 01:59:54,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20408 states, 12333 states have (on average 1.3002513581448147) internal successors, (16036), 12768 states have internal predecessors, (16036), 6406 states have call successors, (6406), 1677 states have call predecessors, (6406), 1666 states have return successors, (6535), 6278 states have call predecessors, (6535), 6400 states have call successors, (6535) [2021-11-21 01:59:54,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20408 states to 20408 states and 28977 transitions. [2021-11-21 01:59:54,779 INFO L78 Accepts]: Start accepts. Automaton has 20408 states and 28977 transitions. Word has length 95 [2021-11-21 01:59:54,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:54,780 INFO L470 AbstractCegarLoop]: Abstraction has 20408 states and 28977 transitions. [2021-11-21 01:59:54,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-21 01:59:54,781 INFO L276 IsEmpty]: Start isEmpty. Operand 20408 states and 28977 transitions. [2021-11-21 01:59:54,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-21 01:59:54,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:54,784 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:54,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 01:59:54,785 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 01:59:54,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:54,785 INFO L85 PathProgramCache]: Analyzing trace with hash -715164859, now seen corresponding path program 1 times [2021-11-21 01:59:54,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:54,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128592743] [2021-11-21 01:59:54,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:54,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:55,141 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2021-11-21 01:59:55,141 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:55,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128592743] [2021-11-21 01:59:55,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128592743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:55,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:59:55,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:59:55,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742394834] [2021-11-21 01:59:55,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:55,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:59:55,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:55,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:59:55,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:59:55,144 INFO L87 Difference]: Start difference. First operand 20408 states and 28977 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 01:59:58,943 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:00:01,095 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:00:02,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:00:08,651 WARN L515 Checker$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 02:00:10,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:00:11,406 WARN L515 Checker$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 02:00:13,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:00:15,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:00:17,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:00:19,707 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:00:27,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:00:27,583 INFO L93 Difference]: Finished difference Result 20424 states and 28990 transitions. [2021-11-21 02:00:27,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 02:00:27,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 100 [2021-11-21 02:00:27,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:00:27,656 INFO L225 Difference]: With dead ends: 20424 [2021-11-21 02:00:27,656 INFO L226 Difference]: Without dead ends: 20422 [2021-11-21 02:00:27,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 02:00:27,668 INFO L933 BasicCegarLoop]: 5411 mSDtfsCounter, 5205 mSDsluCounter, 14810 mSDsCounter, 0 mSdLazyCounter, 2753 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5213 SdHoareTripleChecker+Valid, 18278 SdHoareTripleChecker+Invalid, 2760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2753 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2021-11-21 02:00:27,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5213 Valid, 18278 Invalid, 2760 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 2753 Invalid, 6 Unknown, 0 Unchecked, 31.6s Time] [2021-11-21 02:00:27,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20422 states. [2021-11-21 02:00:28,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20422 to 20416. [2021-11-21 02:00:28,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20416 states, 12339 states have (on average 1.300105356998136) internal successors, (16042), 12774 states have internal predecessors, (16042), 6406 states have call successors, (6406), 1679 states have call predecessors, (6406), 1668 states have return successors, (6535), 6278 states have call predecessors, (6535), 6400 states have call successors, (6535) [2021-11-21 02:00:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20416 states to 20416 states and 28983 transitions. [2021-11-21 02:00:28,586 INFO L78 Accepts]: Start accepts. Automaton has 20416 states and 28983 transitions. Word has length 100 [2021-11-21 02:00:28,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:00:28,586 INFO L470 AbstractCegarLoop]: Abstraction has 20416 states and 28983 transitions. [2021-11-21 02:00:28,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 02:00:28,586 INFO L276 IsEmpty]: Start isEmpty. Operand 20416 states and 28983 transitions. [2021-11-21 02:00:28,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-21 02:00:28,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:00:28,589 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:00:28,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-21 02:00:28,589 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 02:00:28,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:00:28,590 INFO L85 PathProgramCache]: Analyzing trace with hash -145928103, now seen corresponding path program 1 times [2021-11-21 02:00:28,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:00:28,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006995765] [2021-11-21 02:00:28,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:00:28,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:00:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:00:28,918 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2021-11-21 02:00:28,918 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:00:28,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006995765] [2021-11-21 02:00:28,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006995765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:00:28,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:00:28,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 02:00:28,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239742350] [2021-11-21 02:00:28,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:00:28,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 02:00:28,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:00:28,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 02:00:28,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 02:00:28,921 INFO L87 Difference]: Start difference. First operand 20416 states and 28983 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-21 02:00:33,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:00:35,344 WARN L515 Checker$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 02:00:37,473 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:00:44,760 WARN L515 Checker$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 02:00:45,919 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:00:47,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:00:49,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:00:51,825 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:00:59,715 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 02:01:02,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:01:02,824 INFO L93 Difference]: Finished difference Result 20954 states and 29730 transitions. [2021-11-21 02:01:02,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 02:01:02,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 105 [2021-11-21 02:01:02,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:01:02,902 INFO L225 Difference]: With dead ends: 20954 [2021-11-21 02:01:02,902 INFO L226 Difference]: Without dead ends: 20950 [2021-11-21 02:01:02,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 02:01:02,916 INFO L933 BasicCegarLoop]: 5400 mSDtfsCounter, 5138 mSDsluCounter, 14809 mSDsCounter, 0 mSdLazyCounter, 2743 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5143 SdHoareTripleChecker+Valid, 18272 SdHoareTripleChecker+Invalid, 2752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2743 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.0s IncrementalHoareTripleChecker+Time [2021-11-21 02:01:02,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5143 Valid, 18272 Invalid, 2752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2743 Invalid, 7 Unknown, 0 Unchecked, 33.0s Time] [2021-11-21 02:01:02,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20950 states. [2021-11-21 02:01:03,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20950 to 20945. [2021-11-21 02:01:03,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20945 states, 12671 states have (on average 1.3022650146002683) internal successors, (16501), 13115 states have internal predecessors, (16501), 6546 states have call successors, (6546), 1737 states have call predecessors, (6546), 1725 states have return successors, (6675), 6416 states have call predecessors, (6675), 6540 states have call successors, (6675) [2021-11-21 02:01:03,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20945 states to 20945 states and 29722 transitions. [2021-11-21 02:01:03,872 INFO L78 Accepts]: Start accepts. Automaton has 20945 states and 29722 transitions. Word has length 105 [2021-11-21 02:01:03,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:01:03,872 INFO L470 AbstractCegarLoop]: Abstraction has 20945 states and 29722 transitions. [2021-11-21 02:01:03,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-21 02:01:03,873 INFO L276 IsEmpty]: Start isEmpty. Operand 20945 states and 29722 transitions. [2021-11-21 02:01:03,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-21 02:01:03,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:01:03,876 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:01:03,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-21 02:01:03,876 INFO L402 AbstractCegarLoop]: === Iteration 16 === 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 02:01:03,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:01:03,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1459645431, now seen corresponding path program 1 times [2021-11-21 02:01:03,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:01:03,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538062617] [2021-11-21 02:01:03,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:01:03,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:01:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:01:04,212 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-21 02:01:04,212 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:01:04,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538062617] [2021-11-21 02:01:04,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538062617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:01:04,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:01:04,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 02:01:04,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228169834] [2021-11-21 02:01:04,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:01:04,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 02:01:04,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:01:04,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 02:01:04,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 02:01:04,215 INFO L87 Difference]: Start difference. First operand 20945 states and 29722 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-21 02:01:07,790 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 02:01:09,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:01:18,181 WARN L515 Checker$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 02:01:20,699 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:01:22,217 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:01:29,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:01:30,735 WARN L515 Checker$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 02:01:33,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:01:33,905 INFO L93 Difference]: Finished difference Result 20957 states and 29731 transitions. [2021-11-21 02:01:33,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 02:01:33,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 116 [2021-11-21 02:01:33,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:01:33,976 INFO L225 Difference]: With dead ends: 20957 [2021-11-21 02:01:33,976 INFO L226 Difference]: Without dead ends: 20771 [2021-11-21 02:01:33,983 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 02:01:33,983 INFO L933 BasicCegarLoop]: 5407 mSDtfsCounter, 5201 mSDsluCounter, 14800 mSDsCounter, 0 mSdLazyCounter, 2749 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5207 SdHoareTripleChecker+Valid, 18266 SdHoareTripleChecker+Invalid, 2754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2749 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.6s IncrementalHoareTripleChecker+Time [2021-11-21 02:01:33,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5207 Valid, 18266 Invalid, 2754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2749 Invalid, 4 Unknown, 0 Unchecked, 28.6s Time] [2021-11-21 02:01:33,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20771 states. [2021-11-21 02:01:35,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20771 to 20765. [2021-11-21 02:01:35,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20765 states, 12564 states have (on average 1.3041228907991085) internal successors, (16385), 13006 states have internal predecessors, (16385), 6500 states have call successors, (6500), 1709 states have call predecessors, (6500), 1698 states have return successors, (6632), 6373 states have call predecessors, (6632), 6497 states have call successors, (6632) [2021-11-21 02:01:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20765 states to 20765 states and 29517 transitions. [2021-11-21 02:01:35,303 INFO L78 Accepts]: Start accepts. Automaton has 20765 states and 29517 transitions. Word has length 116 [2021-11-21 02:01:35,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:01:35,304 INFO L470 AbstractCegarLoop]: Abstraction has 20765 states and 29517 transitions. [2021-11-21 02:01:35,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-21 02:01:35,304 INFO L276 IsEmpty]: Start isEmpty. Operand 20765 states and 29517 transitions. [2021-11-21 02:01:35,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-21 02:01:35,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:01:35,328 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:01:35,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-21 02:01:35,329 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 02:01:35,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:01:35,329 INFO L85 PathProgramCache]: Analyzing trace with hash 2055569176, now seen corresponding path program 1 times [2021-11-21 02:01:35,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:01:35,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772580447] [2021-11-21 02:01:35,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:01:35,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:01:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:01:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-21 02:01:35,866 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:01:35,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772580447] [2021-11-21 02:01:35,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772580447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:01:35,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:01:35,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 02:01:35,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071452268] [2021-11-21 02:01:35,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:01:35,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 02:01:35,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:01:35,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 02:01:35,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 02:01:35,870 INFO L87 Difference]: Start difference. First operand 20765 states and 29517 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-21 02:01:39,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:01:42,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:01:52,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:01:54,064 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:00,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:02:00,922 INFO L93 Difference]: Finished difference Result 41608 states and 59686 transitions. [2021-11-21 02:02:00,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 02:02:00,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) Word has length 252 [2021-11-21 02:02:00,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:02:01,006 INFO L225 Difference]: With dead ends: 41608 [2021-11-21 02:02:01,006 INFO L226 Difference]: Without dead ends: 20857 [2021-11-21 02:02:01,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 02:02:01,124 INFO L933 BasicCegarLoop]: 4514 mSDtfsCounter, 5 mSDsluCounter, 15670 mSDsCounter, 0 mSdLazyCounter, 2870 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18043 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2870 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2021-11-21 02:02:01,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 18043 Invalid, 2877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2870 Invalid, 4 Unknown, 0 Unchecked, 24.0s Time] [2021-11-21 02:02:01,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20857 states. [2021-11-21 02:02:02,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20857 to 20809. [2021-11-21 02:02:02,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20809 states, 12597 states have (on average 1.303326188775105) internal successors, (16418), 13039 states have internal predecessors, (16418), 6500 states have call successors, (6500), 1709 states have call predecessors, (6500), 1709 states have return successors, (6761), 6384 states have call predecessors, (6761), 6497 states have call successors, (6761) [2021-11-21 02:02:02,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20809 states to 20809 states and 29679 transitions. [2021-11-21 02:02:02,580 INFO L78 Accepts]: Start accepts. Automaton has 20809 states and 29679 transitions. Word has length 252 [2021-11-21 02:02:02,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:02:02,582 INFO L470 AbstractCegarLoop]: Abstraction has 20809 states and 29679 transitions. [2021-11-21 02:02:02,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-21 02:02:02,582 INFO L276 IsEmpty]: Start isEmpty. Operand 20809 states and 29679 transitions. [2021-11-21 02:02:02,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-21 02:02:02,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:02:02,603 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:02:02,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-21 02:02:02,604 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 02:02:02,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:02:02,604 INFO L85 PathProgramCache]: Analyzing trace with hash 13100330, now seen corresponding path program 1 times [2021-11-21 02:02:02,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:02:02,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257646125] [2021-11-21 02:02:02,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:02:02,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:02:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:02:03,335 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-21 02:02:03,336 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:02:03,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257646125] [2021-11-21 02:02:03,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257646125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:02:03,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:02:03,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 02:02:03,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078269550] [2021-11-21 02:02:03,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:02:03,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 02:02:03,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:02:03,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 02:02:03,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 02:02:03,339 INFO L87 Difference]: Start difference. First operand 20809 states and 29679 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-21 02:02:07,367 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:09,768 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:02:14,597 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:18,789 WARN L515 Checker$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 02:02:20,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:23,431 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:24,638 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:29,781 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:32,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:35,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:02:35,939 INFO L93 Difference]: Finished difference Result 20825 states and 29692 transitions. [2021-11-21 02:02:35,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 02:02:35,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 257 [2021-11-21 02:02:35,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:02:36,043 INFO L225 Difference]: With dead ends: 20825 [2021-11-21 02:02:36,043 INFO L226 Difference]: Without dead ends: 20823 [2021-11-21 02:02:36,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 02:02:36,058 INFO L933 BasicCegarLoop]: 5593 mSDtfsCounter, 5060 mSDsluCounter, 15358 mSDsCounter, 0 mSdLazyCounter, 2914 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5067 SdHoareTripleChecker+Valid, 18894 SdHoareTripleChecker+Invalid, 2919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2914 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.8s IncrementalHoareTripleChecker+Time [2021-11-21 02:02:36,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5067 Valid, 18894 Invalid, 2919 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2914 Invalid, 3 Unknown, 0 Unchecked, 31.8s Time] [2021-11-21 02:02:36,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20823 states. [2021-11-21 02:02:37,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20823 to 20817. [2021-11-21 02:02:37,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20817 states, 12603 states have (on average 1.3031817821153693) internal successors, (16424), 13045 states have internal predecessors, (16424), 6500 states have call successors, (6500), 1711 states have call predecessors, (6500), 1711 states have return successors, (6761), 6384 states have call predecessors, (6761), 6497 states have call successors, (6761) [2021-11-21 02:02:37,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20817 states to 20817 states and 29685 transitions. [2021-11-21 02:02:37,143 INFO L78 Accepts]: Start accepts. Automaton has 20817 states and 29685 transitions. Word has length 257 [2021-11-21 02:02:37,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:02:37,144 INFO L470 AbstractCegarLoop]: Abstraction has 20817 states and 29685 transitions. [2021-11-21 02:02:37,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-21 02:02:37,145 INFO L276 IsEmpty]: Start isEmpty. Operand 20817 states and 29685 transitions. [2021-11-21 02:02:37,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-21 02:02:37,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:02:37,174 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:02:37,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-21 02:02:37,174 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 02:02:37,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:02:37,175 INFO L85 PathProgramCache]: Analyzing trace with hash 443441512, now seen corresponding path program 1 times [2021-11-21 02:02:37,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:02:37,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391436239] [2021-11-21 02:02:37,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:02:37,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:02:37,441 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 02:02:37,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567009119] [2021-11-21 02:02:37,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:02:37,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:02:37,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:02:37,444 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 02:02:37,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 02:02:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:02:40,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 9430 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 02:02:40,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:02:41,188 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-21 02:02:41,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 02:02:41,188 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:02:41,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391436239] [2021-11-21 02:02:41,188 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 02:02:41,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567009119] [2021-11-21 02:02:41,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567009119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:02:41,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:02:41,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-21 02:02:41,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751308183] [2021-11-21 02:02:41,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:02:41,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 02:02:41,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:02:41,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 02:02:41,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-21 02:02:41,191 INFO L87 Difference]: Start difference. First operand 20817 states and 29685 transitions. Second operand has 11 states, 11 states have (on average 12.727272727272727) internal successors, (140), 8 states have internal predecessors, (140), 2 states have call successors, (54), 2 states have call predecessors, (54), 5 states have return successors, (48), 5 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-21 02:02:45,953 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 02:02:48,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:02:52,737 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:59,255 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:09,204 WARN L515 Checker$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 02:03:10,224 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:12,069 WARN L515 Checker$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 02:03:13,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:15,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:17,086 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:19,136 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:21,171 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:23,326 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:25,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:29,730 WARN L515 Checker$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 02:03:33,029 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:37,240 WARN L515 Checker$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 02:03:44,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:03:44,938 INFO L93 Difference]: Finished difference Result 41726 states and 59942 transitions. [2021-11-21 02:03:44,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 02:03:44,939 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.727272727272727) internal successors, (140), 8 states have internal predecessors, (140), 2 states have call successors, (54), 2 states have call predecessors, (54), 5 states have return successors, (48), 5 states have call predecessors, (48), 2 states have call successors, (48) Word has length 294 [2021-11-21 02:03:44,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:03:45,146 INFO L225 Difference]: With dead ends: 41726 [2021-11-21 02:03:45,146 INFO L226 Difference]: Without dead ends: 20923 [2021-11-21 02:03:45,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-21 02:03:45,230 INFO L933 BasicCegarLoop]: 4530 mSDtfsCounter, 6 mSDsluCounter, 47166 mSDsCounter, 0 mSdLazyCounter, 7215 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 45275 SdHoareTripleChecker+Invalid, 7224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7215 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.5s IncrementalHoareTripleChecker+Time [2021-11-21 02:03:45,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 45275 Invalid, 7224 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 7215 Invalid, 7 Unknown, 0 Unchecked, 62.5s Time] [2021-11-21 02:03:45,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20923 states. [2021-11-21 02:03:46,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20923 to 20917. [2021-11-21 02:03:46,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20917 states, 12673 states have (on average 1.300639154107157) internal successors, (16483), 13125 states have internal predecessors, (16483), 6500 states have call successors, (6500), 1711 states have call predecessors, (6500), 1741 states have return successors, (6827), 6404 states have call predecessors, (6827), 6497 states have call successors, (6827) [2021-11-21 02:03:46,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20917 states to 20917 states and 29810 transitions. [2021-11-21 02:03:46,299 INFO L78 Accepts]: Start accepts. Automaton has 20917 states and 29810 transitions. Word has length 294 [2021-11-21 02:03:46,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:03:46,300 INFO L470 AbstractCegarLoop]: Abstraction has 20917 states and 29810 transitions. [2021-11-21 02:03:46,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.727272727272727) internal successors, (140), 8 states have internal predecessors, (140), 2 states have call successors, (54), 2 states have call predecessors, (54), 5 states have return successors, (48), 5 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-21 02:03:46,301 INFO L276 IsEmpty]: Start isEmpty. Operand 20917 states and 29810 transitions. [2021-11-21 02:03:46,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-11-21 02:03:46,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:03:46,335 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:03:46,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 02:03:46,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:03:46,555 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 02:03:46,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:03:46,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1860866149, now seen corresponding path program 1 times [2021-11-21 02:03:46,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:03:46,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652222054] [2021-11-21 02:03:46,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:03:46,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:03:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:03:47,021 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-21 02:03:47,021 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:03:47,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652222054] [2021-11-21 02:03:47,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652222054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:03:47,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:03:47,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:03:47,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149386051] [2021-11-21 02:03:47,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:03:47,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:03:47,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:03:47,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:03:47,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:03:47,024 INFO L87 Difference]: Start difference. First operand 20917 states and 29810 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-21 02:03:49,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:53,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:03:58,780 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:01,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:05,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:04:05,949 INFO L93 Difference]: Finished difference Result 41908 states and 60172 transitions. [2021-11-21 02:04:05,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:04:05,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 291 [2021-11-21 02:04:05,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:04:06,097 INFO L225 Difference]: With dead ends: 41908 [2021-11-21 02:04:06,097 INFO L226 Difference]: Without dead ends: 21005 [2021-11-21 02:04:06,151 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 02:04:06,152 INFO L933 BasicCegarLoop]: 4516 mSDtfsCounter, 5 mSDsluCounter, 5225 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 9025 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2021-11-21 02:04:06,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 9025 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1437 Invalid, 3 Unknown, 0 Unchecked, 18.0s Time] [2021-11-21 02:04:06,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21005 states. [2021-11-21 02:04:06,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21005 to 20928. [2021-11-21 02:04:06,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20928 states, 12684 states have (on average 1.3003784295175023) internal successors, (16494), 13136 states have internal predecessors, (16494), 6500 states have call successors, (6500), 1711 states have call predecessors, (6500), 1741 states have return successors, (6827), 6404 states have call predecessors, (6827), 6497 states have call successors, (6827) [2021-11-21 02:04:07,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20928 states to 20928 states and 29821 transitions. [2021-11-21 02:04:07,141 INFO L78 Accepts]: Start accepts. Automaton has 20928 states and 29821 transitions. Word has length 291 [2021-11-21 02:04:07,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:04:07,142 INFO L470 AbstractCegarLoop]: Abstraction has 20928 states and 29821 transitions. [2021-11-21 02:04:07,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-21 02:04:07,142 INFO L276 IsEmpty]: Start isEmpty. Operand 20928 states and 29821 transitions. [2021-11-21 02:04:07,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-21 02:04:07,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:04:07,159 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:04:07,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-21 02:04:07,159 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 02:04:07,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:04:07,160 INFO L85 PathProgramCache]: Analyzing trace with hash 138860101, now seen corresponding path program 1 times [2021-11-21 02:04:07,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:04:07,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861813729] [2021-11-21 02:04:07,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:04:07,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:04:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:04:07,690 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2021-11-21 02:04:07,691 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:04:07,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861813729] [2021-11-21 02:04:07,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861813729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:04:07,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:04:07,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 02:04:07,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095942632] [2021-11-21 02:04:07,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:04:07,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 02:04:07,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:04:07,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 02:04:07,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 02:04:07,693 INFO L87 Difference]: Start difference. First operand 20928 states and 29821 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 1 states have call successors, (38) [2021-11-21 02:04:10,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:12,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:04:14,418 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:04:16,452 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:04:18,496 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:04:28,004 WARN L515 Checker$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 02:04:29,450 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:31,517 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:33,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:37,031 WARN L515 Checker$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 02:04:46,849 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:48,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:04:48,244 INFO L93 Difference]: Finished difference Result 43048 states and 61573 transitions. [2021-11-21 02:04:48,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 02:04:48,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 1 states have call successors, (38) Word has length 292 [2021-11-21 02:04:48,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:04:48,316 INFO L225 Difference]: With dead ends: 43048 [2021-11-21 02:04:48,316 INFO L226 Difference]: Without dead ends: 22134 [2021-11-21 02:04:48,484 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 02:04:48,485 INFO L933 BasicCegarLoop]: 5346 mSDtfsCounter, 523 mSDsluCounter, 17864 mSDsCounter, 0 mSdLazyCounter, 3322 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 20764 SdHoareTripleChecker+Invalid, 3330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3322 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.5s IncrementalHoareTripleChecker+Time [2021-11-21 02:04:48,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 20764 Invalid, 3330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3322 Invalid, 7 Unknown, 0 Unchecked, 39.5s Time] [2021-11-21 02:04:48,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22134 states. [2021-11-21 02:04:49,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22134 to 20936. [2021-11-21 02:04:49,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20936 states, 12690 states have (on average 1.3002364066193854) internal successors, (16500), 13142 states have internal predecessors, (16500), 6500 states have call successors, (6500), 1711 states have call predecessors, (6500), 1743 states have return successors, (6829), 6406 states have call predecessors, (6829), 6497 states have call successors, (6829) [2021-11-21 02:04:49,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20936 states to 20936 states and 29829 transitions. [2021-11-21 02:04:49,459 INFO L78 Accepts]: Start accepts. Automaton has 20936 states and 29829 transitions. Word has length 292 [2021-11-21 02:04:49,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:04:49,460 INFO L470 AbstractCegarLoop]: Abstraction has 20936 states and 29829 transitions. [2021-11-21 02:04:49,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 1 states have call successors, (38) [2021-11-21 02:04:49,460 INFO L276 IsEmpty]: Start isEmpty. Operand 20936 states and 29829 transitions. [2021-11-21 02:04:49,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-21 02:04:49,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:04:49,478 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:04:49,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-21 02:04:49,479 INFO L402 AbstractCegarLoop]: === Iteration 22 === 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 02:04:49,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:04:49,479 INFO L85 PathProgramCache]: Analyzing trace with hash 100836095, now seen corresponding path program 1 times [2021-11-21 02:04:49,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:04:49,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882272096] [2021-11-21 02:04:49,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:04:49,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:04:49,681 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 02:04:49,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190658872] [2021-11-21 02:04:49,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:04:49,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:04:49,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:04:49,687 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 02:04:49,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 02:04:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:04:52,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 9533 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 02:04:52,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:04:53,248 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-21 02:04:53,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 02:04:53,248 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:04:53,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882272096] [2021-11-21 02:04:53,248 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 02:04:53,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190658872] [2021-11-21 02:04:53,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190658872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:04:53,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:04:53,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 02:04:53,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560026838] [2021-11-21 02:04:53,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:04:53,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 02:04:53,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:04:53,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 02:04:53,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 02:04:53,251 INFO L87 Difference]: Start difference. First operand 20936 states and 29829 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (51), 3 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-21 02:04:56,483 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 02:04:58,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:05:00,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:09,065 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:11,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:13,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:15,894 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:22,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:05:22,337 INFO L93 Difference]: Finished difference Result 42014 states and 60940 transitions. [2021-11-21 02:05:22,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 02:05:22,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (51), 3 states have call predecessors, (51), 2 states have call successors, (51) Word has length 309 [2021-11-21 02:05:22,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:05:22,415 INFO L225 Difference]: With dead ends: 42014 [2021-11-21 02:05:22,415 INFO L226 Difference]: Without dead ends: 21092 [2021-11-21 02:05:22,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 02:05:22,475 INFO L933 BasicCegarLoop]: 4535 mSDtfsCounter, 5 mSDsluCounter, 15739 mSDsCounter, 0 mSdLazyCounter, 2873 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 18130 SdHoareTripleChecker+Invalid, 2878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2873 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2021-11-21 02:05:22,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 18130 Invalid, 2878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2873 Invalid, 5 Unknown, 0 Unchecked, 28.2s Time] [2021-11-21 02:05:22,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21092 states. [2021-11-21 02:05:23,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21092 to 20988. [2021-11-21 02:05:23,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20988 states, 12729 states have (on average 1.2993165213292481) internal successors, (16539), 13181 states have internal predecessors, (16539), 6500 states have call successors, (6500), 1711 states have call predecessors, (6500), 1756 states have return successors, (6852), 6419 states have call predecessors, (6852), 6497 states have call successors, (6852) [2021-11-21 02:05:23,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20988 states to 20988 states and 29891 transitions. [2021-11-21 02:05:23,433 INFO L78 Accepts]: Start accepts. Automaton has 20988 states and 29891 transitions. Word has length 309 [2021-11-21 02:05:23,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:05:23,433 INFO L470 AbstractCegarLoop]: Abstraction has 20988 states and 29891 transitions. [2021-11-21 02:05:23,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (51), 3 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-21 02:05:23,434 INFO L276 IsEmpty]: Start isEmpty. Operand 20988 states and 29891 transitions. [2021-11-21 02:05:23,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2021-11-21 02:05:23,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:05:23,446 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:05:23,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 02:05:23,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-21 02:05:23,647 INFO L402 AbstractCegarLoop]: === Iteration 23 === 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 02:05:23,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:05:23,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1642423797, now seen corresponding path program 1 times [2021-11-21 02:05:23,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:05:23,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053233299] [2021-11-21 02:05:23,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:05:23,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:05:23,961 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 02:05:23,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003786414] [2021-11-21 02:05:23,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:05:23,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:05:23,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:05:23,966 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 02:05:23,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9185ab2-728a-4b5d-8f2c-2d9bc7e5c68e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process