./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/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_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ab0b375f71eb557eddedfb6836efa7383e8c24249ba51445e071f612ca1dd29b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:39:22,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:39:22,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:39:22,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:39:22,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:39:22,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:39:22,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:39:22,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:39:22,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:39:22,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:39:22,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:39:22,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:39:22,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:39:22,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:39:22,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:39:22,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:39:22,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:39:22,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:39:22,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:39:22,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:39:22,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:39:22,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:39:22,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:39:22,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:39:22,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:39:22,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:39:22,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:39:22,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:39:22,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:39:22,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:39:22,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:39:22,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:39:22,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:39:22,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:39:22,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:39:22,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:39:22,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:39:22,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:39:22,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:39:22,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:39:22,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:39:22,907 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:39:22,942 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:39:22,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:39:22,946 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:39:22,946 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:39:22,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:39:22,951 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:39:22,952 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:39:22,952 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:39:22,952 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:39:22,953 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:39:22,954 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:39:22,954 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:39:22,955 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:39:22,955 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:39:22,955 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:39:22,955 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:39:22,956 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:39:22,956 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:39:22,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:39:22,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:39:22,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:39:22,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:39:22,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:39:22,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:39:22,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:39:22,960 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:39:22,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:39:22,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:39:22,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:39:22,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:39:22,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:39:22,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:39:22,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:39:22,963 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:39:22,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:39:22,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:39:22,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:39:22,965 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:39:22,965 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_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab0b375f71eb557eddedfb6836efa7383e8c24249ba51445e071f612ca1dd29b [2021-11-25 18:39:23,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:39:23,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:39:23,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:39:23,335 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:39:23,336 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:39:23,337 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i [2021-11-25 18:39:23,420 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/data/59587f5f7/cc67e494df854bf19027b6eedd99df59/FLAG9a128b9cf [2021-11-25 18:39:24,780 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:39:24,781 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i [2021-11-25 18:39:24,848 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/data/59587f5f7/cc67e494df854bf19027b6eedd99df59/FLAG9a128b9cf [2021-11-25 18:39:24,953 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/data/59587f5f7/cc67e494df854bf19027b6eedd99df59 [2021-11-25 18:39:24,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:39:24,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:39:24,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:39:24,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:39:24,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:39:24,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:39:24" (1/1) ... [2021-11-25 18:39:24,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@461bebae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:24, skipping insertion in model container [2021-11-25 18:39:24,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:39:24" (1/1) ... [2021-11-25 18:39:24,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:39:25,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:39:33,973 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_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i[647538,647551] [2021-11-25 18:39:33,977 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i[647707,647720] [2021-11-25 18:39:33,978 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i[647874,647887] [2021-11-25 18:39:33,979 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_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i[648042,648055] [2021-11-25 18:39:34,037 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:39:34,130 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:39:34,841 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_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i[647538,647551] [2021-11-25 18:39:34,842 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_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i[647707,647720] [2021-11-25 18:39:34,843 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_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i[647874,647887] [2021-11-25 18:39:34,843 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_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i[648042,648055] [2021-11-25 18:39:34,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:39:35,512 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:39:35,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:35 WrapperNode [2021-11-25 18:39:35,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:39:35,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:39:35,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:39:35,516 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:39:35,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:35" (1/1) ... [2021-11-25 18:39:35,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:35" (1/1) ... [2021-11-25 18:39:36,322 INFO L137 Inliner]: procedures = 794, calls = 7637, calls flagged for inlining = 373, calls inlined = 338, statements flattened = 15779 [2021-11-25 18:39:36,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:39:36,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:39:36,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:39:36,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:39:36,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:35" (1/1) ... [2021-11-25 18:39:36,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:35" (1/1) ... [2021-11-25 18:39:36,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:35" (1/1) ... [2021-11-25 18:39:36,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:35" (1/1) ... [2021-11-25 18:39:36,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:35" (1/1) ... [2021-11-25 18:39:36,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:35" (1/1) ... [2021-11-25 18:39:37,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:35" (1/1) ... [2021-11-25 18:39:37,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:39:37,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:39:37,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:39:37,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:39:37,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:35" (1/1) ... [2021-11-25 18:39:37,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:39:37,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:39:37,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:39:37,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:39:37,678 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-25 18:39:37,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-25 18:39:37,679 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-25 18:39:37,679 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-25 18:39:37,679 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-25 18:39:37,680 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_irq [2021-11-25 18:39:37,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_irq [2021-11-25 18:39:37,680 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_both_serdes [2021-11-25 18:39:37,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_both_serdes [2021-11-25 18:39:37,680 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_xgmac_reg [2021-11-25 18:39:37,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_xgmac_reg [2021-11-25 18:39:37,681 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_reset [2021-11-25 18:39:37,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_reset [2021-11-25 18:39:37,681 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2021-11-25 18:39:37,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2021-11-25 18:39:37,682 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2021-11-25 18:39:37,682 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2021-11-25 18:39:37,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 18:39:37,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 18:39:37,682 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 18:39:37,683 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 18:39:37,683 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 18:39:37,683 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 18:39:37,683 INFO L130 BoogieDeclarations]: Found specification of procedure PageTail [2021-11-25 18:39:37,684 INFO L138 BoogieDeclarations]: Found implementation of procedure PageTail [2021-11-25 18:39:37,684 INFO L130 BoogieDeclarations]: Found specification of procedure ql_release_all [2021-11-25 18:39:37,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_release_all [2021-11-25 18:39:37,685 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_none_assert [2021-11-25 18:39:37,685 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_none_assert [2021-11-25 18:39:37,685 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 18:39:37,685 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 18:39:37,685 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 18:39:37,686 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 18:39:37,686 INFO L130 BoogieDeclarations]: Found specification of procedure ql_dump_risc_ram_area [2021-11-25 18:39:37,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_dump_risc_ram_area [2021-11-25 18:39:37,687 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_other_func_reg [2021-11-25 18:39:37,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_other_func_reg [2021-11-25 18:39:37,687 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 18:39:37,687 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 18:39:37,688 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-25 18:39:37,688 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-25 18:39:37,688 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_xgmac_regs [2021-11-25 18:39:37,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_xgmac_regs [2021-11-25 18:39:37,689 INFO L130 BoogieDeclarations]: Found specification of procedure ql_update_buffer_queues [2021-11-25 18:39:37,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_update_buffer_queues [2021-11-25 18:39:37,691 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_cam_entries [2021-11-25 18:39:37,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_cam_entries [2021-11-25 18:39:37,691 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_mem_resources [2021-11-25 18:39:37,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_mem_resources [2021-11-25 18:39:37,692 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-25 18:39:37,692 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-25 18:39:37,692 INFO L130 BoogieDeclarations]: Found specification of procedure ql_eeh_close [2021-11-25 18:39:37,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_eeh_close [2021-11-25 18:39:37,693 INFO L130 BoogieDeclarations]: Found specification of procedure netif_receive_skb [2021-11-25 18:39:37,694 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_receive_skb [2021-11-25 18:39:37,694 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 18:39:37,694 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 18:39:37,694 INFO L130 BoogieDeclarations]: Found specification of procedure skb_record_rx_queue [2021-11-25 18:39:37,694 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_record_rx_queue [2021-11-25 18:39:37,695 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-25 18:39:37,695 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-25 18:39:37,695 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 18:39:37,695 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 18:39:37,695 INFO L130 BoogieDeclarations]: Found specification of procedure ql_build_coredump_seg_header [2021-11-25 18:39:37,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_build_coredump_seg_header [2021-11-25 18:39:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_close [2021-11-25 18:39:37,696 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_close [2021-11-25 18:39:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_mb_sts [2021-11-25 18:39:37,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_mb_sts [2021-11-25 18:39:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:39:37,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:39:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:39:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-25 18:39:37,714 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-25 18:39:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_offset [2021-11-25 18:39:37,715 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_offset [2021-11-25 18:39:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 18:39:37,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 18:39:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2021-11-25 18:39:37,716 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2021-11-25 18:39:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-25 18:39:37,717 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-25 18:39:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write32 [2021-11-25 18:39:37,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write32 [2021-11-25 18:39:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure ql_cam_route_initialize [2021-11-25 18:39:37,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_cam_route_initialize [2021-11-25 18:39:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 18:39:37,720 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 18:39:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 18:39:37,720 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 18:39:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_other_func_reg_rdy [2021-11-25 18:39:37,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_other_func_reg_rdy [2021-11-25 18:39:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 18:39:37,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 18:39:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:39:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_mpi_reg [2021-11-25 18:39:37,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_mpi_reg [2021-11-25 18:39:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-25 18:39:37,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-25 18:39:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:39:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:39:37,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:39:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 18:39:37,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 18:39:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:39:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 18:39:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_unlock [2021-11-25 18:39:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_unlock [2021-11-25 18:39:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_8012_flash_params [2021-11-25 18:39:37,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_8012_flash_params [2021-11-25 18:39:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-25 18:39:37,729 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-25 18:39:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_other_func_serdes_reg [2021-11-25 18:39:37,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_other_func_serdes_reg [2021-11-25 18:39:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 18:39:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 18:39:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_hw_lock_of_ql_adapter [2021-11-25 18:39:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_hw_lock_of_ql_adapter [2021-11-25 18:39:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 18:39:37,739 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 18:39:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 18:39:37,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 18:39:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-11-25 18:39:37,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-11-25 18:39:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure ql_8000_port_initialize [2021-11-25 18:39:37,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_8000_port_initialize [2021-11-25 18:39:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 18:39:37,740 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 18:39:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_hw_lock_of_ql_adapter [2021-11-25 18:39:37,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_hw_lock_of_ql_adapter [2021-11-25 18:39:37,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:39:37,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:39:37,741 INFO L130 BoogieDeclarations]: Found specification of procedure ql_8012_port_initialize [2021-11-25 18:39:37,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_8012_port_initialize [2021-11-25 18:39:37,741 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_flash_word [2021-11-25 18:39:37,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_flash_word [2021-11-25 18:39:37,742 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 18:39:37,742 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 18:39:37,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:39:37,742 INFO L130 BoogieDeclarations]: Found specification of procedure csum_tcpudp_magic [2021-11-25 18:39:37,742 INFO L138 BoogieDeclarations]: Found implementation of procedure csum_tcpudp_magic [2021-11-25 18:39:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 18:39:37,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 18:39:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-11-25 18:39:37,743 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-11-25 18:39:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 18:39:37,744 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 18:39:37,744 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-25 18:39:37,744 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_cq_idx [2021-11-25 18:39:37,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_cq_idx [2021-11-25 18:39:37,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 18:39:37,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 18:39:37,745 INFO L130 BoogieDeclarations]: Found specification of procedure ql_link_on [2021-11-25 18:39:37,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_link_on [2021-11-25 18:39:37,745 INFO L130 BoogieDeclarations]: Found specification of procedure napi_gro_receive [2021-11-25 18:39:37,745 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_gro_receive [2021-11-25 18:39:37,745 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 18:39:37,745 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 18:39:37,746 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-11-25 18:39:37,746 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-11-25 18:39:37,746 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 18:39:37,746 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 18:39:37,746 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-25 18:39:37,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-25 18:39:37,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:39:37,767 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:39:37,767 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-25 18:39:37,767 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-25 18:39:37,767 INFO L130 BoogieDeclarations]: Found specification of procedure ql_update_cq [2021-11-25 18:39:37,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_update_cq [2021-11-25 18:39:37,767 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-25 18:39:37,768 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-25 18:39:37,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:39:37,768 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 18:39:37,768 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 18:39:37,768 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_curr_sbuf [2021-11-25 18:39:37,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_curr_sbuf [2021-11-25 18:39:37,768 INFO L130 BoogieDeclarations]: Found specification of procedure ql_realign_skb [2021-11-25 18:39:37,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_realign_skb [2021-11-25 18:39:37,769 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_routing_entries [2021-11-25 18:39:37,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_routing_entries [2021-11-25 18:39:37,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:39:37,769 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-25 18:39:37,769 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-25 18:39:37,769 INFO L130 BoogieDeclarations]: Found specification of procedure ql_process_mac_split_rx_intr [2021-11-25 18:39:37,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_process_mac_split_rx_intr [2021-11-25 18:39:37,769 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_suspend [2021-11-25 18:39:37,770 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_suspend [2021-11-25 18:39:37,770 INFO L130 BoogieDeclarations]: Found specification of procedure __vlan_hwaccel_put_tag [2021-11-25 18:39:37,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __vlan_hwaccel_put_tag [2021-11-25 18:39:37,770 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-25 18:39:37,770 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-25 18:39:37,770 INFO L130 BoogieDeclarations]: Found specification of procedure ql_cancel_all_work_sync [2021-11-25 18:39:37,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_cancel_all_work_sync [2021-11-25 18:39:37,770 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 18:39:37,771 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 18:39:37,771 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 18:39:37,771 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 18:39:37,771 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2021-11-25 18:39:37,771 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2021-11-25 18:39:37,771 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-25 18:39:37,771 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-25 18:39:37,771 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-25 18:39:37,772 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-25 18:39:37,772 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-25 18:39:37,772 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-25 18:39:37,772 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-25 18:39:37,772 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-25 18:39:37,772 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 18:39:37,772 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 18:39:37,772 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_get_port_cfg [2021-11-25 18:39:37,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_get_port_cfg [2021-11-25 18:39:37,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:39:37,773 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-25 18:39:37,776 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-25 18:39:37,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:39:37,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:39:37,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_10_2 [2021-11-25 18:39:37,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_10_2 [2021-11-25 18:39:37,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_80 [2021-11-25 18:39:37,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_80 [2021-11-25 18:39:37,777 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_down [2021-11-25 18:39:37,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_down [2021-11-25 18:39:37,778 INFO L130 BoogieDeclarations]: Found specification of procedure ql_queue_fw_error [2021-11-25 18:39:37,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_queue_fw_error [2021-11-25 18:39:37,778 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mpi_handler [2021-11-25 18:39:37,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mpi_handler [2021-11-25 18:39:37,778 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_xgmac_reg64 [2021-11-25 18:39:37,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_xgmac_reg64 [2021-11-25 18:39:37,779 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 18:39:37,779 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 18:39:37,779 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_set_mgmnt_traffic_ctl [2021-11-25 18:39:37,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_set_mgmnt_traffic_ctl [2021-11-25 18:39:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_other_func_reg [2021-11-25 18:39:37,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_other_func_reg [2021-11-25 18:39:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_reg_rdy [2021-11-25 18:39:37,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_reg_rdy [2021-11-25 18:39:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-25 18:39:37,794 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-25 18:39:37,794 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_set_led_cfg [2021-11-25 18:39:37,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_set_led_cfg [2021-11-25 18:39:37,794 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_cfg [2021-11-25 18:39:37,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_cfg [2021-11-25 18:39:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure ql_lbq_block_size [2021-11-25 18:39:37,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_lbq_block_size [2021-11-25 18:39:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 18:39:37,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 18:39:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure netif_get_num_default_rss_queues [2021-11-25 18:39:37,797 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_get_num_default_rss_queues [2021-11-25 18:39:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_ets_regs [2021-11-25 18:39:37,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_ets_regs [2021-11-25 18:39:37,798 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_cfg [2021-11-25 18:39:37,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_cfg [2021-11-25 18:39:37,798 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 18:39:37,798 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 18:39:37,798 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-25 18:39:37,799 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read32 [2021-11-25 18:39:37,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read32 [2021-11-25 18:39:37,799 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_intr_states [2021-11-25 18:39:37,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_intr_states [2021-11-25 18:39:37,799 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2021-11-25 18:39:37,799 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2021-11-25 18:39:37,800 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-25 18:39:37,800 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-25 18:39:37,800 INFO L130 BoogieDeclarations]: Found specification of procedure ql_timer [2021-11-25 18:39:37,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_timer [2021-11-25 18:39:37,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:39:37,800 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:39:37,801 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-25 18:39:37,801 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-25 18:39:37,801 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-25 18:39:37,801 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-25 18:39:37,801 INFO L130 BoogieDeclarations]: Found specification of procedure ql_enable_completion_interrupt [2021-11-25 18:39:37,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_enable_completion_interrupt [2021-11-25 18:39:37,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:39:37,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:39:37,802 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 18:39:37,802 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 18:39:37,802 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_send [2021-11-25 18:39:37,802 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_send [2021-11-25 18:39:37,802 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-25 18:39:37,803 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-25 18:39:37,803 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-25 18:39:37,803 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-25 18:39:37,803 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2021-11-25 18:39:37,803 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2021-11-25 18:39:37,803 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-25 18:39:37,804 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-25 18:39:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_regs_len [2021-11-25 18:39:37,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_regs_len [2021-11-25 18:39:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_io_resume [2021-11-25 18:39:37,804 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_io_resume [2021-11-25 18:39:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_5 [2021-11-25 18:39:37,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_5 [2021-11-25 18:39:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 18:39:37,805 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 18:39:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_shutdown [2021-11-25 18:39:37,805 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_shutdown [2021-11-25 18:39:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure ql_update_mac_hdr_len [2021-11-25 18:39:37,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_update_mac_hdr_len [2021-11-25 18:39:37,806 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mailbox_command [2021-11-25 18:39:37,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mailbox_command [2021-11-25 18:39:37,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:39:37,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:39:37,806 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_irq_mask [2021-11-25 18:39:37,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_irq_mask [2021-11-25 18:39:37,807 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 18:39:37,807 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 18:39:37,807 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 18:39:37,807 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 18:39:37,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:39:37,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:39:37,808 INFO L130 BoogieDeclarations]: Found specification of procedure __qlge_vlan_rx_add_vid [2021-11-25 18:39:37,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __qlge_vlan_rx_add_vid [2021-11-25 18:39:37,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_5_2 [2021-11-25 18:39:37,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_5_2 [2021-11-25 18:39:37,808 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-25 18:39:37,808 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-25 18:39:37,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:39:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure ql_queue_asic_error [2021-11-25 18:39:37,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_queue_asic_error [2021-11-25 18:39:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-25 18:39:37,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-25 18:39:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_xgmac_reg [2021-11-25 18:39:37,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_xgmac_reg [2021-11-25 18:39:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_up [2021-11-25 18:39:37,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_up [2021-11-25 18:39:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 18:39:37,810 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 18:39:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_mac_addr_reg [2021-11-25 18:39:37,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_mac_addr_reg [2021-11-25 18:39:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2021-11-25 18:39:37,811 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2021-11-25 18:39:37,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:39:37,811 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_serdes_reg [2021-11-25 18:39:37,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_serdes_reg [2021-11-25 18:39:37,811 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 18:39:37,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 18:39:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:39:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_open [2021-11-25 18:39:37,812 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_open [2021-11-25 18:39:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 18:39:37,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 18:39:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:39:37,813 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:39:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 18:39:37,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 18:39:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 18:39:37,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 18:39:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_probe [2021-11-25 18:39:37,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_probe [2021-11-25 18:39:37,814 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_rx_buffers [2021-11-25 18:39:37,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_rx_buffers [2021-11-25 18:39:37,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_88 [2021-11-25 18:39:37,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_88 [2021-11-25 18:39:37,814 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_trylock [2021-11-25 18:39:37,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_trylock [2021-11-25 18:39:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_set_port_cfg [2021-11-25 18:39:37,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_set_port_cfg [2021-11-25 18:39:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure __get_order [2021-11-25 18:39:37,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __get_order [2021-11-25 18:39:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_spinlock [2021-11-25 18:39:37,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_spinlock [2021-11-25 18:39:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-25 18:39:37,816 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-25 18:39:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:39:37,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:39:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure ql_disable_completion_interrupt [2021-11-25 18:39:37,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_disable_completion_interrupt [2021-11-25 18:39:37,817 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_fill_page_desc [2021-11-25 18:39:37,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_fill_page_desc [2021-11-25 18:39:37,817 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 18:39:37,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 18:39:37,817 INFO L130 BoogieDeclarations]: Found specification of procedure ql_clear_routing_entries [2021-11-25 18:39:37,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_clear_routing_entries [2021-11-25 18:39:37,818 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-25 18:39:37,818 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-25 18:39:37,818 INFO L130 BoogieDeclarations]: Found specification of procedure ql_link_off [2021-11-25 18:39:37,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_link_off [2021-11-25 18:39:37,818 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-25 18:39:37,818 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-25 18:39:37,818 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-25 18:39:37,819 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-25 18:39:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_tx_timeout [2021-11-25 18:39:37,819 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_tx_timeout [2021-11-25 18:39:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-11-25 18:39:37,819 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-11-25 18:39:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_mpi_regs [2021-11-25 18:39:37,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_mpi_regs [2021-11-25 18:39:37,820 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 18:39:37,820 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 18:39:37,820 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-25 18:39:37,820 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-25 18:39:37,820 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_subqueue [2021-11-25 18:39:37,821 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_subqueue [2021-11-25 18:39:37,821 INFO L130 BoogieDeclarations]: Found specification of procedure ql_release_adapter_resources [2021-11-25 18:39:37,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_release_adapter_resources [2021-11-25 18:39:37,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:39:37,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:39:37,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:39:37,821 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-25 18:39:37,822 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-25 18:39:37,822 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_rx_resources [2021-11-25 18:39:37,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_rx_resources [2021-11-25 18:39:37,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 18:39:37,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 18:39:37,822 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-25 18:39:37,823 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-25 18:39:37,823 INFO L130 BoogieDeclarations]: Found specification of procedure ql_disable_interrupts [2021-11-25 18:39:37,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_disable_interrupts [2021-11-25 18:39:37,823 INFO L130 BoogieDeclarations]: Found specification of procedure ql_soft_reset_mpi_risc [2021-11-25 18:39:37,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_soft_reset_mpi_risc [2021-11-25 18:39:37,823 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-25 18:39:37,824 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-25 18:39:37,824 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_remove [2021-11-25 18:39:37,824 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_remove [2021-11-25 18:39:37,824 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_set_multicast_list [2021-11-25 18:39:37,824 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_set_multicast_list [2021-11-25 18:39:37,824 INFO L130 BoogieDeclarations]: Found specification of procedure ql_tx_ring_clean [2021-11-25 18:39:37,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_tx_ring_clean [2021-11-25 18:39:37,825 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-25 18:39:37,825 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-25 18:39:37,825 INFO L130 BoogieDeclarations]: Found specification of procedure skb_fill_page_desc [2021-11-25 18:39:37,825 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_fill_page_desc [2021-11-25 18:39:37,825 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_mpi_reg [2021-11-25 18:39:37,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_mpi_reg [2021-11-25 18:39:37,826 INFO L130 BoogieDeclarations]: Found specification of procedure ql_clean_inbound_rx_ring [2021-11-25 18:39:37,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_clean_inbound_rx_ring [2021-11-25 18:39:37,826 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_subqueue [2021-11-25 18:39:37,826 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_subqueue [2021-11-25 18:39:37,826 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 18:39:37,826 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 18:39:37,827 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-25 18:39:37,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-25 18:39:37,827 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-25 18:39:37,827 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-25 18:39:37,827 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 18:39:37,828 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 18:39:37,828 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2021-11-25 18:39:37,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2021-11-25 18:39:37,828 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-25 18:39:37,828 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-25 18:39:37,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:39:37,829 INFO L130 BoogieDeclarations]: Found specification of procedure ql_validate_flash [2021-11-25 18:39:37,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_validate_flash [2021-11-25 18:39:37,829 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 18:39:37,829 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 18:39:37,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-25 18:39:37,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-25 18:39:37,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:39:37,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:39:37,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 18:39:37,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 18:39:37,830 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_8000_flash_params [2021-11-25 18:39:37,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_8000_flash_params [2021-11-25 18:39:37,831 INFO L130 BoogieDeclarations]: Found specification of procedure ql_check_lb_frame [2021-11-25 18:39:37,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_check_lb_frame [2021-11-25 18:39:37,831 INFO L130 BoogieDeclarations]: Found specification of procedure ql_categorize_rx_err [2021-11-25 18:39:37,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_categorize_rx_err [2021-11-25 18:39:37,831 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 18:39:37,831 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 18:39:37,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_79 [2021-11-25 18:39:37,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_79 [2021-11-25 18:39:37,832 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_initialize [2021-11-25 18:39:37,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_initialize [2021-11-25 18:39:37,832 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-25 18:39:37,832 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-25 18:39:37,833 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_sh_reg [2021-11-25 18:39:37,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_sh_reg [2021-11-25 18:39:37,833 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-25 18:39:37,833 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-25 18:39:37,833 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_db_reg [2021-11-25 18:39:37,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_db_reg [2021-11-25 18:39:37,834 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:39:37,834 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:39:37,834 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 18:39:37,834 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 18:39:37,834 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-25 18:39:37,834 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-25 18:39:37,835 INFO L130 BoogieDeclarations]: Found specification of procedure ql_unmap_send [2021-11-25 18:39:37,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_unmap_send [2021-11-25 18:39:37,835 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-25 18:39:37,835 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-25 18:39:37,835 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_routing_reg [2021-11-25 18:39:37,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_routing_reg [2021-11-25 18:39:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-25 18:39:37,836 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-25 18:39:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:39:37,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:39:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_mac_addr_reg [2021-11-25 18:39:37,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_mac_addr_reg [2021-11-25 18:39:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure ql_own_firmware [2021-11-25 18:39:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_own_firmware [2021-11-25 18:39:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 18:39:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 18:39:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_curr_lchunk [2021-11-25 18:39:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_curr_lchunk [2021-11-25 18:39:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 18:39:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 18:39:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:39:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_mac_addr [2021-11-25 18:39:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_mac_addr [2021-11-25 18:39:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:39:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:39:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_trap [2021-11-25 18:39:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_trap [2021-11-25 18:39:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_resume [2021-11-25 18:39:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_resume [2021-11-25 18:39:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure ql_core_dump [2021-11-25 18:39:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_core_dump [2021-11-25 18:39:39,707 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:39:39,716 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:39:39,899 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:40:09,930 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:40:16,036 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:40:16,036 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-25 18:40:16,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:40:16 BoogieIcfgContainer [2021-11-25 18:40:16,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:40:16,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:40:16,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:40:16,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:40:16,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:39:24" (1/3) ... [2021-11-25 18:40:16,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb2ca6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:40:16, skipping insertion in model container [2021-11-25 18:40:16,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:35" (2/3) ... [2021-11-25 18:40:16,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb2ca6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:40:16, skipping insertion in model container [2021-11-25 18:40:16,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:40:16" (3/3) ... [2021-11-25 18:40:16,057 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qlge-qlge.cil.i [2021-11-25 18:40:16,064 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:40:16,064 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 18:40:16,138 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:40:16,145 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:40:16,145 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 18:40:16,252 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) [2021-11-25 18:40:16,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 18:40:16,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:40:16,258 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] [2021-11-25 18:40:16,259 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:40:16,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:40:16,266 INFO L85 PathProgramCache]: Analyzing trace with hash -232265319, now seen corresponding path program 1 times [2021-11-25 18:40:16,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:40:16,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172789626] [2021-11-25 18:40:16,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:40:16,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:40:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:40:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 18:40:17,681 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:40:17,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172789626] [2021-11-25 18:40:17,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172789626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:40:17,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:40:17,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:40:17,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394537012] [2021-11-25 18:40:17,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:40:17,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:40:17,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:40:17,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:40:17,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:40:17,748 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) [2021-11-25 18:40:22,042 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:24,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:40:28,469 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:33,366 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:35,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:37,416 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:43,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:46,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:40:46,340 INFO L93 Difference]: Finished difference Result 9001 states and 13029 transitions. [2021-11-25 18:40:46,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:40:46,344 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 [2021-11-25 18:40:46,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:40:46,451 INFO L225 Difference]: With dead ends: 9001 [2021-11-25 18:40:46,451 INFO L226 Difference]: Without dead ends: 5363 [2021-11-25 18:40:46,496 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 [2021-11-25 18:40:46,509 INFO L933 BasicCegarLoop]: 5290 mSDtfsCounter, 5226 mSDsluCounter, 14512 mSDsCounter, 0 mSdLazyCounter, 2659 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5248 SdHoareTripleChecker+Valid, 17923 SdHoareTripleChecker+Invalid, 2664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2659 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:40:46,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5248 Valid, 17923 Invalid, 2664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2659 Invalid, 4 Unknown, 0 Unchecked, 27.8s Time] [2021-11-25 18:40:46,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5363 states. [2021-11-25 18:40:46,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5363 to 5355. [2021-11-25 18:40:46,993 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) [2021-11-25 18:40:47,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5355 states to 5355 states and 7668 transitions. [2021-11-25 18:40:47,061 INFO L78 Accepts]: Start accepts. Automaton has 5355 states and 7668 transitions. Word has length 35 [2021-11-25 18:40:47,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:40:47,062 INFO L470 AbstractCegarLoop]: Abstraction has 5355 states and 7668 transitions. [2021-11-25 18:40:47,062 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) [2021-11-25 18:40:47,063 INFO L276 IsEmpty]: Start isEmpty. Operand 5355 states and 7668 transitions. [2021-11-25 18:40:47,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-25 18:40:47,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:40:47,066 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] [2021-11-25 18:40:47,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:40:47,067 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)] === [2021-11-25 18:40:47,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:40:47,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2126808635, now seen corresponding path program 1 times [2021-11-25 18:40:47,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:40:47,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774347703] [2021-11-25 18:40:47,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:40:47,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:40:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:40:48,009 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 18:40:48,010 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:40:48,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774347703] [2021-11-25 18:40:48,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774347703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:40:48,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:40:48,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:40:48,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816169382] [2021-11-25 18:40:48,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:40:48,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:40:48,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:40:48,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:40:48,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:40:48,016 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) [2021-11-25 18:40:52,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:54,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:40:58,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:00,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:04,836 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:06,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:07,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:14,614 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:17,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:41:17,566 INFO L93 Difference]: Finished difference Result 5369 states and 7680 transitions. [2021-11-25 18:41:17,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:41:17,567 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 [2021-11-25 18:41:17,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:41:17,629 INFO L225 Difference]: With dead ends: 5369 [2021-11-25 18:41:17,629 INFO L226 Difference]: Without dead ends: 5367 [2021-11-25 18:41:17,636 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 [2021-11-25 18:41:17,637 INFO L933 BasicCegarLoop]: 5276 mSDtfsCounter, 5205 mSDsluCounter, 14476 mSDsCounter, 0 mSdLazyCounter, 2659 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.6s 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, 29.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:41:17,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5225 Valid, 17873 Invalid, 2664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2659 Invalid, 4 Unknown, 0 Unchecked, 29.1s Time] [2021-11-25 18:41:17,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5367 states. [2021-11-25 18:41:17,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5367 to 5359. [2021-11-25 18:41:17,983 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) [2021-11-25 18:41:18,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5359 states to 5359 states and 7671 transitions. [2021-11-25 18:41:18,020 INFO L78 Accepts]: Start accepts. Automaton has 5359 states and 7671 transitions. Word has length 40 [2021-11-25 18:41:18,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:41:18,021 INFO L470 AbstractCegarLoop]: Abstraction has 5359 states and 7671 transitions. [2021-11-25 18:41:18,022 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) [2021-11-25 18:41:18,022 INFO L276 IsEmpty]: Start isEmpty. Operand 5359 states and 7671 transitions. [2021-11-25 18:41:18,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-25 18:41:18,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:41:18,025 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] [2021-11-25 18:41:18,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:41:18,026 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)] === [2021-11-25 18:41:18,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:41:18,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1113555495, now seen corresponding path program 1 times [2021-11-25 18:41:18,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:41:18,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581303121] [2021-11-25 18:41:18,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:41:18,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:41:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:41:18,735 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-25 18:41:18,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:41:18,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581303121] [2021-11-25 18:41:18,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581303121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:41:18,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:41:18,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:41:18,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552278377] [2021-11-25 18:41:18,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:41:18,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:41:18,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:41:18,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:41:18,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:41:18,740 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) [2021-11-25 18:41:22,397 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:24,535 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:41:28,764 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:32,943 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:34,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:36,780 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:40,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:44,256 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:45,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:49,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:41:49,689 INFO L93 Difference]: Finished difference Result 5373 states and 7683 transitions. [2021-11-25 18:41:49,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:41:49,690 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 [2021-11-25 18:41:49,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:41:49,738 INFO L225 Difference]: With dead ends: 5373 [2021-11-25 18:41:49,739 INFO L226 Difference]: Without dead ends: 5371 [2021-11-25 18:41:49,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:41:49,746 INFO L933 BasicCegarLoop]: 5276 mSDtfsCounter, 5201 mSDsluCounter, 14476 mSDsCounter, 0 mSdLazyCounter, 2658 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5220 SdHoareTripleChecker+Valid, 17873 SdHoareTripleChecker+Invalid, 2664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2658 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:41:49,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5220 Valid, 17873 Invalid, 2664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2658 Invalid, 5 Unknown, 0 Unchecked, 30.6s Time] [2021-11-25 18:41:49,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5371 states. [2021-11-25 18:41:50,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5371 to 5363. [2021-11-25 18:41:50,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5363 states, 3210 states have (on average 1.2981308411214953) internal successors, (4167), 3322 states have internal predecessors, (4167), 1753 states have call successors, (1753), 398 states have call predecessors, (1753), 397 states have return successors, (1754), 1722 states have call predecessors, (1754), 1750 states have call successors, (1754) [2021-11-25 18:41:50,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5363 states to 5363 states and 7674 transitions. [2021-11-25 18:41:50,078 INFO L78 Accepts]: Start accepts. Automaton has 5363 states and 7674 transitions. Word has length 51 [2021-11-25 18:41:50,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:41:50,080 INFO L470 AbstractCegarLoop]: Abstraction has 5363 states and 7674 transitions. [2021-11-25 18:41:50,081 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) [2021-11-25 18:41:50,081 INFO L276 IsEmpty]: Start isEmpty. Operand 5363 states and 7674 transitions. [2021-11-25 18:41:50,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-25 18:41:50,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:41:50,094 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] [2021-11-25 18:41:50,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:41:50,097 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:41:50,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:41:50,098 INFO L85 PathProgramCache]: Analyzing trace with hash 244136311, now seen corresponding path program 1 times [2021-11-25 18:41:50,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:41:50,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962374875] [2021-11-25 18:41:50,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:41:50,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:41:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:41:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-25 18:41:50,666 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:41:50,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962374875] [2021-11-25 18:41:50,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962374875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:41:50,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:41:50,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:41:50,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793106508] [2021-11-25 18:41:50,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:41:50,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:41:50,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:41:50,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:41:50,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:41:50,669 INFO L87 Difference]: Start difference. First operand 5363 states and 7674 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) [2021-11-25 18:41:54,295 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:56,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:42:01,113 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:04,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:09,183 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:10,524 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:12,563 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:13,657 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:19,191 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:24,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:42:24,553 INFO L93 Difference]: Finished difference Result 10482 states and 15054 transitions. [2021-11-25 18:42:24,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:42:24,554 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 [2021-11-25 18:42:24,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:42:24,677 INFO L225 Difference]: With dead ends: 10482 [2021-11-25 18:42:24,677 INFO L226 Difference]: Without dead ends: 10480 [2021-11-25 18:42:24,687 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 [2021-11-25 18:42:24,688 INFO L933 BasicCegarLoop]: 7365 mSDtfsCounter, 5172 mSDsluCounter, 21967 mSDsCounter, 0 mSdLazyCounter, 3892 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5186 SdHoareTripleChecker+Valid, 26520 SdHoareTripleChecker+Invalid, 3899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3892 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:42:24,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5186 Valid, 26520 Invalid, 3899 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 3892 Invalid, 4 Unknown, 0 Unchecked, 33.3s Time] [2021-11-25 18:42:24,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10480 states. [2021-11-25 18:42:25,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10480 to 10470. [2021-11-25 18:42:25,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10470 states, 6272 states have (on average 1.2999043367346939) internal successors, (8153), 6496 states have internal predecessors, (8153), 3417 states have call successors, (3417), 784 states have call predecessors, (3417), 778 states have return successors, (3475), 3346 states have call predecessors, (3475), 3411 states have call successors, (3475) [2021-11-25 18:42:25,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10470 states to 10470 states and 15045 transitions. [2021-11-25 18:42:25,470 INFO L78 Accepts]: Start accepts. Automaton has 10470 states and 15045 transitions. Word has length 56 [2021-11-25 18:42:25,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:42:25,471 INFO L470 AbstractCegarLoop]: Abstraction has 10470 states and 15045 transitions. [2021-11-25 18:42:25,471 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) [2021-11-25 18:42:25,471 INFO L276 IsEmpty]: Start isEmpty. Operand 10470 states and 15045 transitions. [2021-11-25 18:42:25,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-25 18:42:25,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:42:25,474 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2021-11-25 18:42:25,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:42:25,475 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:42:25,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:42:25,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1510298649, now seen corresponding path program 1 times [2021-11-25 18:42:25,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:42:25,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710839953] [2021-11-25 18:42:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:42:25,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:42:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:42:26,007 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-25 18:42:26,007 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:42:26,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710839953] [2021-11-25 18:42:26,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710839953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:42:26,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:42:26,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:42:26,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34730156] [2021-11-25 18:42:26,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:42:26,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:42:26,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:42:26,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:42:26,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:42:26,010 INFO L87 Difference]: Start difference. First operand 10470 states and 15045 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, (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) [2021-11-25 18:42:29,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:31,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:42:38,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:41,769 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:43,237 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:48,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:51,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:42:51,148 INFO L93 Difference]: Finished difference Result 10488 states and 15061 transitions. [2021-11-25 18:42:51,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:42:51,149 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, (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 61 [2021-11-25 18:42:51,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:42:51,214 INFO L225 Difference]: With dead ends: 10488 [2021-11-25 18:42:51,214 INFO L226 Difference]: Without dead ends: 10486 [2021-11-25 18:42:51,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:42:51,223 INFO L933 BasicCegarLoop]: 5241 mSDtfsCounter, 5201 mSDsluCounter, 14388 mSDsCounter, 0 mSdLazyCounter, 2632 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5218 SdHoareTripleChecker+Valid, 17768 SdHoareTripleChecker+Invalid, 2637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2632 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:42:51,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5218 Valid, 17768 Invalid, 2637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2632 Invalid, 4 Unknown, 0 Unchecked, 24.7s Time] [2021-11-25 18:42:51,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10486 states. [2021-11-25 18:42:51,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10486 to 10481. [2021-11-25 18:42:51,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10481 states, 6280 states have (on average 1.2995222929936305) internal successors, (8161), 6504 states have internal predecessors, (8161), 3417 states have call successors, (3417), 786 states have call predecessors, (3417), 781 states have return successors, (3477), 3347 states have call predecessors, (3477), 3411 states have call successors, (3477) [2021-11-25 18:42:51,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10481 states to 10481 states and 15055 transitions. [2021-11-25 18:42:51,810 INFO L78 Accepts]: Start accepts. Automaton has 10481 states and 15055 transitions. Word has length 61 [2021-11-25 18:42:51,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:42:51,811 INFO L470 AbstractCegarLoop]: Abstraction has 10481 states and 15055 transitions. [2021-11-25 18:42:51,811 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, (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) [2021-11-25 18:42:51,811 INFO L276 IsEmpty]: Start isEmpty. Operand 10481 states and 15055 transitions. [2021-11-25 18:42:51,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 18:42:51,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:42:51,815 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 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] [2021-11-25 18:42:51,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:42:51,815 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:42:51,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:42:51,816 INFO L85 PathProgramCache]: Analyzing trace with hash -228567241, now seen corresponding path program 1 times [2021-11-25 18:42:51,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:42:51,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760711300] [2021-11-25 18:42:51,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:42:51,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:42:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:42:52,284 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-25 18:42:52,284 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:42:52,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760711300] [2021-11-25 18:42:52,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760711300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:42:52,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:42:52,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:42:52,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927712802] [2021-11-25 18:42:52,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:42:52,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:42:52,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:42:52,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:42:52,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:42:52,288 INFO L87 Difference]: Start difference. First operand 10481 states and 15055 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, (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) [2021-11-25 18:42:55,874 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:57,999 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:43:01,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:06,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:07,851 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:10,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:13,275 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:15,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:21,563 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:24,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:43:24,041 INFO L93 Difference]: Finished difference Result 10496 states and 15067 transitions. [2021-11-25 18:43:24,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:43:24,042 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, (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 66 [2021-11-25 18:43:24,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:43:24,106 INFO L225 Difference]: With dead ends: 10496 [2021-11-25 18:43:24,106 INFO L226 Difference]: Without dead ends: 10494 [2021-11-25 18:43:24,116 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 [2021-11-25 18:43:24,117 INFO L933 BasicCegarLoop]: 5241 mSDtfsCounter, 5201 mSDsluCounter, 14389 mSDsCounter, 0 mSdLazyCounter, 2630 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5217 SdHoareTripleChecker+Valid, 17768 SdHoareTripleChecker+Invalid, 2638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2630 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:43:24,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5217 Valid, 17768 Invalid, 2638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2630 Invalid, 7 Unknown, 0 Unchecked, 31.4s Time] [2021-11-25 18:43:24,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10494 states. [2021-11-25 18:43:24,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10494 to 10489. [2021-11-25 18:43:24,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10489 states, 6286 states have (on average 1.2992363983455297) internal successors, (8167), 6510 states have internal predecessors, (8167), 3417 states have call successors, (3417), 788 states have call predecessors, (3417), 783 states have return successors, (3477), 3347 states have call predecessors, (3477), 3411 states have call successors, (3477) [2021-11-25 18:43:24,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10489 states to 10489 states and 15061 transitions. [2021-11-25 18:43:24,730 INFO L78 Accepts]: Start accepts. Automaton has 10489 states and 15061 transitions. Word has length 66 [2021-11-25 18:43:24,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:43:24,731 INFO L470 AbstractCegarLoop]: Abstraction has 10489 states and 15061 transitions. [2021-11-25 18:43:24,731 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, (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) [2021-11-25 18:43:24,731 INFO L276 IsEmpty]: Start isEmpty. Operand 10489 states and 15061 transitions. [2021-11-25 18:43:24,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-25 18:43:24,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:43:24,734 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 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] [2021-11-25 18:43:24,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:43:24,735 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:43:24,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:43:24,735 INFO L85 PathProgramCache]: Analyzing trace with hash -227650137, now seen corresponding path program 1 times [2021-11-25 18:43:24,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:43:24,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193640249] [2021-11-25 18:43:24,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:43:24,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:43:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:43:25,175 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-25 18:43:25,176 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:43:25,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193640249] [2021-11-25 18:43:25,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193640249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:43:25,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:43:25,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:43:25,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26163480] [2021-11-25 18:43:25,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:43:25,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:43:25,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:43:25,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:43:25,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:43:25,178 INFO L87 Difference]: Start difference. First operand 10489 states and 15061 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, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-25 18:43:28,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:30,066 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:32,099 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:34,210 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:43:37,398 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:43,506 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:45,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:48,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:51,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:56,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:43:56,318 INFO L93 Difference]: Finished difference Result 14176 states and 20261 transitions. [2021-11-25 18:43:56,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:43:56,319 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, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 71 [2021-11-25 18:43:56,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:43:56,390 INFO L225 Difference]: With dead ends: 14176 [2021-11-25 18:43:56,391 INFO L226 Difference]: Without dead ends: 14174 [2021-11-25 18:43:56,400 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 [2021-11-25 18:43:56,401 INFO L933 BasicCegarLoop]: 5401 mSDtfsCounter, 5194 mSDsluCounter, 14750 mSDsCounter, 0 mSdLazyCounter, 2732 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5207 SdHoareTripleChecker+Valid, 18225 SdHoareTripleChecker+Invalid, 2740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2732 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:43:56,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5207 Valid, 18225 Invalid, 2740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2732 Invalid, 7 Unknown, 0 Unchecked, 30.6s Time] [2021-11-25 18:43:56,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14174 states. [2021-11-25 18:43:57,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14174 to 14169. [2021-11-25 18:43:57,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14169 states, 8532 states have (on average 1.3028598218471636) internal successors, (11116), 8837 states have internal predecessors, (11116), 4526 states have call successors, (4526), 1115 states have call predecessors, (4526), 1108 states have return successors, (4613), 4434 states have call predecessors, (4613), 4520 states have call successors, (4613) [2021-11-25 18:43:57,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14169 states to 14169 states and 20255 transitions. [2021-11-25 18:43:57,189 INFO L78 Accepts]: Start accepts. Automaton has 14169 states and 20255 transitions. Word has length 71 [2021-11-25 18:43:57,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:43:57,190 INFO L470 AbstractCegarLoop]: Abstraction has 14169 states and 20255 transitions. [2021-11-25 18:43:57,191 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, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-25 18:43:57,191 INFO L276 IsEmpty]: Start isEmpty. Operand 14169 states and 20255 transitions. [2021-11-25 18:43:57,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 18:43:57,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:43:57,193 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] [2021-11-25 18:43:57,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:43:57,193 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:43:57,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:43:57,194 INFO L85 PathProgramCache]: Analyzing trace with hash 548074743, now seen corresponding path program 1 times [2021-11-25 18:43:57,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:43:57,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690700771] [2021-11-25 18:43:57,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:43:57,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:43:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:43:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-25 18:43:57,652 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:43:57,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690700771] [2021-11-25 18:43:57,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690700771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:43:57,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:43:57,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:43:57,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706987203] [2021-11-25 18:43:57,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:43:57,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:43:57,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:43:57,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:43:57,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:43:57,655 INFO L87 Difference]: Start difference. First operand 14169 states and 20255 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) [2021-11-25 18:44:01,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:44:03,520 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:44:10,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:44:12,971 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:44:15,682 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:44:18,578 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:44:20,632 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:44:22,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:44:24,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:44:30,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:44:30,866 INFO L93 Difference]: Finished difference Result 14184 states and 20267 transitions. [2021-11-25 18:44:30,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:44:30,867 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 [2021-11-25 18:44:30,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:44:30,945 INFO L225 Difference]: With dead ends: 14184 [2021-11-25 18:44:30,945 INFO L226 Difference]: Without dead ends: 14182 [2021-11-25 18:44:30,955 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 [2021-11-25 18:44:30,955 INFO L933 BasicCegarLoop]: 5411 mSDtfsCounter, 5201 mSDsluCounter, 14810 mSDsCounter, 0 mSdLazyCounter, 2753 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5215 SdHoareTripleChecker+Valid, 18278 SdHoareTripleChecker+Invalid, 2760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2753 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:44:30,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5215 Valid, 18278 Invalid, 2760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2753 Invalid, 6 Unknown, 0 Unchecked, 32.6s Time] [2021-11-25 18:44:30,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14182 states. [2021-11-25 18:44:31,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14182 to 14177. [2021-11-25 18:44:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14177 states, 8538 states have (on average 1.3026469899273834) internal successors, (11122), 8843 states have internal predecessors, (11122), 4526 states have call successors, (4526), 1117 states have call predecessors, (4526), 1110 states have return successors, (4613), 4434 states have call predecessors, (4613), 4520 states have call successors, (4613) [2021-11-25 18:44:31,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14177 states to 14177 states and 20261 transitions. [2021-11-25 18:44:31,845 INFO L78 Accepts]: Start accepts. Automaton has 14177 states and 20261 transitions. Word has length 76 [2021-11-25 18:44:31,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:44:31,845 INFO L470 AbstractCegarLoop]: Abstraction has 14177 states and 20261 transitions. [2021-11-25 18:44:31,846 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) [2021-11-25 18:44:31,846 INFO L276 IsEmpty]: Start isEmpty. Operand 14177 states and 20261 transitions. [2021-11-25 18:44:31,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-25 18:44:31,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:44:31,848 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] [2021-11-25 18:44:31,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:44:31,849 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:44:31,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:44:31,849 INFO L85 PathProgramCache]: Analyzing trace with hash -198642023, now seen corresponding path program 1 times [2021-11-25 18:44:31,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:44:31,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269722228] [2021-11-25 18:44:31,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:44:31,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:44:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:44:32,298 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-25 18:44:32,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:44:32,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269722228] [2021-11-25 18:44:32,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269722228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:44:32,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:44:32,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:44:32,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466858934] [2021-11-25 18:44:32,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:44:32,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:44:32,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:44:32,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:44:32,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:44:32,302 INFO L87 Difference]: Start difference. First operand 14177 states and 20261 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) [2021-11-25 18:44:35,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:44:37,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:44:40,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:44:43,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:44:47,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:44:49,542 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:44:51,606 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:44:54,029 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:44:57,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:06,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:45:06,155 INFO L93 Difference]: Finished difference Result 14192 states and 20273 transitions. [2021-11-25 18:45:06,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:45:06,156 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 [2021-11-25 18:45:06,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:45:06,226 INFO L225 Difference]: With dead ends: 14192 [2021-11-25 18:45:06,226 INFO L226 Difference]: Without dead ends: 14190 [2021-11-25 18:45:06,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:45:06,239 INFO L933 BasicCegarLoop]: 5411 mSDtfsCounter, 5205 mSDsluCounter, 14810 mSDsCounter, 0 mSdLazyCounter, 2754 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s 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, 33.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:45:06,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5218 Valid, 18278 Invalid, 2760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2754 Invalid, 5 Unknown, 0 Unchecked, 33.3s Time] [2021-11-25 18:45:06,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14190 states. [2021-11-25 18:45:07,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14190 to 14185. [2021-11-25 18:45:07,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14185 states, 8544 states have (on average 1.3024344569288389) internal successors, (11128), 8849 states have internal predecessors, (11128), 4526 states have call successors, (4526), 1119 states have call predecessors, (4526), 1112 states have return successors, (4613), 4434 states have call predecessors, (4613), 4520 states have call successors, (4613) [2021-11-25 18:45:07,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14185 states to 14185 states and 20267 transitions. [2021-11-25 18:45:07,105 INFO L78 Accepts]: Start accepts. Automaton has 14185 states and 20267 transitions. Word has length 75 [2021-11-25 18:45:07,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:45:07,106 INFO L470 AbstractCegarLoop]: Abstraction has 14185 states and 20267 transitions. [2021-11-25 18:45:07,106 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) [2021-11-25 18:45:07,107 INFO L276 IsEmpty]: Start isEmpty. Operand 14185 states and 20267 transitions. [2021-11-25 18:45:07,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-25 18:45:07,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:45:07,110 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 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] [2021-11-25 18:45:07,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:45:07,111 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:45:07,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:45:07,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1978854729, now seen corresponding path program 1 times [2021-11-25 18:45:07,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:45:07,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573919512] [2021-11-25 18:45:07,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:45:07,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:45:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:45:07,631 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-25 18:45:07,631 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:45:07,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573919512] [2021-11-25 18:45:07,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573919512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:45:07,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:45:07,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:45:07,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560046254] [2021-11-25 18:45:07,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:45:07,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:45:07,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:45:07,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:45:07,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:45:07,634 INFO L87 Difference]: Start difference. First operand 14185 states and 20267 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, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 18:45:11,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:13,757 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:45:22,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:23,539 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:25,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:28,418 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:30,682 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:35,421 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:39,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:45:39,804 INFO L93 Difference]: Finished difference Result 14200 states and 20279 transitions. [2021-11-25 18:45:39,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:45:39,805 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, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 86 [2021-11-25 18:45:39,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:45:39,879 INFO L225 Difference]: With dead ends: 14200 [2021-11-25 18:45:39,879 INFO L226 Difference]: Without dead ends: 14198 [2021-11-25 18:45:39,892 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 [2021-11-25 18:45:39,893 INFO L933 BasicCegarLoop]: 5406 mSDtfsCounter, 5188 mSDsluCounter, 14794 mSDsCounter, 0 mSdLazyCounter, 2745 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5200 SdHoareTripleChecker+Valid, 18263 SdHoareTripleChecker+Invalid, 2752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2745 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:45:39,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5200 Valid, 18263 Invalid, 2752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2745 Invalid, 6 Unknown, 0 Unchecked, 31.5s Time] [2021-11-25 18:45:39,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14198 states. [2021-11-25 18:45:40,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14198 to 14193. [2021-11-25 18:45:40,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14193 states, 8550 states have (on average 1.3022222222222222) internal successors, (11134), 8855 states have internal predecessors, (11134), 4526 states have call successors, (4526), 1121 states have call predecessors, (4526), 1114 states have return successors, (4613), 4434 states have call predecessors, (4613), 4520 states have call successors, (4613) [2021-11-25 18:45:40,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14193 states to 14193 states and 20273 transitions. [2021-11-25 18:45:40,666 INFO L78 Accepts]: Start accepts. Automaton has 14193 states and 20273 transitions. Word has length 86 [2021-11-25 18:45:40,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:45:40,667 INFO L470 AbstractCegarLoop]: Abstraction has 14193 states and 20273 transitions. [2021-11-25 18:45:40,667 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, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 18:45:40,667 INFO L276 IsEmpty]: Start isEmpty. Operand 14193 states and 20273 transitions. [2021-11-25 18:45:40,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-25 18:45:40,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:45:40,670 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 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] [2021-11-25 18:45:40,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 18:45:40,670 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:45:40,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:45:40,670 INFO L85 PathProgramCache]: Analyzing trace with hash -961558055, now seen corresponding path program 1 times [2021-11-25 18:45:40,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:45:40,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080226852] [2021-11-25 18:45:40,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:45:40,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:45:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:45:41,087 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-11-25 18:45:41,088 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:45:41,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080226852] [2021-11-25 18:45:41,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080226852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:45:41,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:45:41,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:45:41,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884139633] [2021-11-25 18:45:41,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:45:41,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:45:41,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:45:41,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:45:41,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:45:41,091 INFO L87 Difference]: Start difference. First operand 14193 states and 20273 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, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 18:45:45,270 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:47,441 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:45:50,115 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:52,137 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:56,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:58,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:01,586 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:07,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:07,608 INFO L93 Difference]: Finished difference Result 14208 states and 20285 transitions. [2021-11-25 18:46:07,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:46:07,610 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, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 85 [2021-11-25 18:46:07,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:07,689 INFO L225 Difference]: With dead ends: 14208 [2021-11-25 18:46:07,689 INFO L226 Difference]: Without dead ends: 14206 [2021-11-25 18:46:07,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:46:07,704 INFO L933 BasicCegarLoop]: 5406 mSDtfsCounter, 5192 mSDsluCounter, 14788 mSDsCounter, 0 mSdLazyCounter, 2739 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5203 SdHoareTripleChecker+Valid, 18263 SdHoareTripleChecker+Invalid, 2745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2739 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:07,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5203 Valid, 18263 Invalid, 2745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2739 Invalid, 5 Unknown, 0 Unchecked, 25.8s Time] [2021-11-25 18:46:07,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14206 states. [2021-11-25 18:46:08,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14206 to 14201. [2021-11-25 18:46:08,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14201 states, 8556 states have (on average 1.3020102851799906) internal successors, (11140), 8861 states have internal predecessors, (11140), 4526 states have call successors, (4526), 1123 states have call predecessors, (4526), 1116 states have return successors, (4613), 4434 states have call predecessors, (4613), 4520 states have call successors, (4613) [2021-11-25 18:46:08,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14201 states to 14201 states and 20279 transitions. [2021-11-25 18:46:08,496 INFO L78 Accepts]: Start accepts. Automaton has 14201 states and 20279 transitions. Word has length 85 [2021-11-25 18:46:08,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:08,496 INFO L470 AbstractCegarLoop]: Abstraction has 14201 states and 20279 transitions. [2021-11-25 18:46:08,497 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, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 18:46:08,497 INFO L276 IsEmpty]: Start isEmpty. Operand 14201 states and 20279 transitions. [2021-11-25 18:46:08,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-25 18:46:08,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:08,500 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 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] [2021-11-25 18:46:08,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 18:46:08,500 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:46:08,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:08,501 INFO L85 PathProgramCache]: Analyzing trace with hash 351842053, now seen corresponding path program 1 times [2021-11-25 18:46:08,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:08,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398585961] [2021-11-25 18:46:08,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:08,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:09,082 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-11-25 18:46:09,082 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:09,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398585961] [2021-11-25 18:46:09,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398585961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:09,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:09,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:46:09,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201659229] [2021-11-25 18:46:09,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:09,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:46:09,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:09,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:46:09,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:46:09,086 INFO L87 Difference]: Start difference. First operand 14201 states and 20279 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, (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) [2021-11-25 18:46:13,488 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:15,644 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:46:19,630 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:24,499 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:26,151 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:27,228 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:29,273 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:30,897 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:33,053 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:34,069 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:36,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:42,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:44,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:44,161 INFO L93 Difference]: Finished difference Result 14216 states and 20291 transitions. [2021-11-25 18:46:44,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:46:44,162 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, (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 90 [2021-11-25 18:46:44,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:44,230 INFO L225 Difference]: With dead ends: 14216 [2021-11-25 18:46:44,231 INFO L226 Difference]: Without dead ends: 14214 [2021-11-25 18:46:44,244 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 [2021-11-25 18:46:44,245 INFO L933 BasicCegarLoop]: 5411 mSDtfsCounter, 5205 mSDsluCounter, 14810 mSDsCounter, 0 mSdLazyCounter, 2754 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5215 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, 34.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:44,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5215 Valid, 18278 Invalid, 2760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2754 Invalid, 5 Unknown, 0 Unchecked, 34.4s Time] [2021-11-25 18:46:44,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14214 states. [2021-11-25 18:46:45,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14214 to 14209. [2021-11-25 18:46:45,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14209 states, 8562 states have (on average 1.3017986451763606) internal successors, (11146), 8867 states have internal predecessors, (11146), 4526 states have call successors, (4526), 1125 states have call predecessors, (4526), 1118 states have return successors, (4613), 4434 states have call predecessors, (4613), 4520 states have call successors, (4613) [2021-11-25 18:46:45,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14209 states to 14209 states and 20285 transitions. [2021-11-25 18:46:45,397 INFO L78 Accepts]: Start accepts. Automaton has 14209 states and 20285 transitions. Word has length 90 [2021-11-25 18:46:45,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:45,397 INFO L470 AbstractCegarLoop]: Abstraction has 14209 states and 20285 transitions. [2021-11-25 18:46:45,398 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, (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) [2021-11-25 18:46:45,398 INFO L276 IsEmpty]: Start isEmpty. Operand 14209 states and 20285 transitions. [2021-11-25 18:46:45,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:46:45,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:45,401 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] [2021-11-25 18:46:45,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 18:46:45,401 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:46:45,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:45,402 INFO L85 PathProgramCache]: Analyzing trace with hash -2069283559, now seen corresponding path program 1 times [2021-11-25 18:46:45,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:45,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113700392] [2021-11-25 18:46:45,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:45,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:45,875 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-25 18:46:45,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:45,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113700392] [2021-11-25 18:46:45,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113700392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:45,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:45,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:46:45,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606017801] [2021-11-25 18:46:45,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:45,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:46:45,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:45,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:46:45,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:46:45,879 INFO L87 Difference]: Start difference. First operand 14209 states and 20285 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) [2021-11-25 18:46:49,871 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:52,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:46:54,685 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:47:02,405 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:05,355 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:07,425 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:13,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:15,262 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:18,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:47:20,632 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:47:22,680 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:47:24,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:47:24,109 INFO L93 Difference]: Finished difference Result 17519 states and 24931 transitions. [2021-11-25 18:47:24,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:47:24,110 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 [2021-11-25 18:47:24,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:47:24,170 INFO L225 Difference]: With dead ends: 17519 [2021-11-25 18:47:24,170 INFO L226 Difference]: Without dead ends: 17517 [2021-11-25 18:47:24,179 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 [2021-11-25 18:47:24,179 INFO L933 BasicCegarLoop]: 5063 mSDtfsCounter, 5206 mSDsluCounter, 13971 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5212 SdHoareTripleChecker+Valid, 17234 SdHoareTripleChecker+Invalid, 2542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:47:24,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5212 Valid, 17234 Invalid, 2542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2533 Invalid, 8 Unknown, 0 Unchecked, 37.4s Time] [2021-11-25 18:47:24,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17517 states. [2021-11-25 18:47:24,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17517 to 17513. [2021-11-25 18:47:24,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17513 states, 10576 states have (on average 1.3020045385779122) internal successors, (13770), 10951 states have internal predecessors, (13770), 5525 states have call successors, (5525), 1418 states have call predecessors, (5525), 1409 states have return successors, (5631), 5414 states have call predecessors, (5631), 5519 states have call successors, (5631) [2021-11-25 18:47:25,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17513 states to 17513 states and 24926 transitions. [2021-11-25 18:47:25,065 INFO L78 Accepts]: Start accepts. Automaton has 17513 states and 24926 transitions. Word has length 95 [2021-11-25 18:47:25,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:47:25,069 INFO L470 AbstractCegarLoop]: Abstraction has 17513 states and 24926 transitions. [2021-11-25 18:47:25,069 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) [2021-11-25 18:47:25,070 INFO L276 IsEmpty]: Start isEmpty. Operand 17513 states and 24926 transitions. [2021-11-25 18:47:25,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-25 18:47:25,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:47:25,075 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 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] [2021-11-25 18:47:25,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 18:47:25,075 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:47:25,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:47:25,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1754779191, now seen corresponding path program 1 times [2021-11-25 18:47:25,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:47:25,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960749163] [2021-11-25 18:47:25,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:47:25,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:47:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:47:25,767 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-11-25 18:47:25,768 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:47:25,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960749163] [2021-11-25 18:47:25,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960749163] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:47:25,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:47:25,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:47:25,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919349076] [2021-11-25 18:47:25,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:47:25,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:47:25,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:47:25,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:47:25,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:47:25,771 INFO L87 Difference]: Start difference. First operand 17513 states and 24926 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, (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) [2021-11-25 18:47:30,129 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:32,281 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:47:39,398 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:41,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:49,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:47:49,061 INFO L93 Difference]: Finished difference Result 17528 states and 24938 transitions. [2021-11-25 18:47:49,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:47:49,062 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, (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 106 [2021-11-25 18:47:49,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:47:49,121 INFO L225 Difference]: With dead ends: 17528 [2021-11-25 18:47:49,121 INFO L226 Difference]: Without dead ends: 17526 [2021-11-25 18:47:49,130 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 [2021-11-25 18:47:49,131 INFO L933 BasicCegarLoop]: 5406 mSDtfsCounter, 5188 mSDsluCounter, 14791 mSDsCounter, 0 mSdLazyCounter, 2743 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5196 SdHoareTripleChecker+Valid, 18263 SdHoareTripleChecker+Invalid, 2748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2743 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:47:49,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5196 Valid, 18263 Invalid, 2748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2743 Invalid, 4 Unknown, 0 Unchecked, 22.4s Time] [2021-11-25 18:47:49,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17526 states. [2021-11-25 18:47:49,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17526 to 17521. [2021-11-25 18:47:49,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17521 states, 10582 states have (on average 1.301833301833302) internal successors, (13776), 10957 states have internal predecessors, (13776), 5525 states have call successors, (5525), 1420 states have call predecessors, (5525), 1411 states have return successors, (5631), 5414 states have call predecessors, (5631), 5519 states have call successors, (5631) [2021-11-25 18:47:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17521 states to 17521 states and 24932 transitions. [2021-11-25 18:47:50,063 INFO L78 Accepts]: Start accepts. Automaton has 17521 states and 24932 transitions. Word has length 106 [2021-11-25 18:47:50,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:47:50,063 INFO L470 AbstractCegarLoop]: Abstraction has 17521 states and 24932 transitions. [2021-11-25 18:47:50,063 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, (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) [2021-11-25 18:47:50,063 INFO L276 IsEmpty]: Start isEmpty. Operand 17521 states and 24932 transitions. [2021-11-25 18:47:50,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-25 18:47:50,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:47:50,066 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] [2021-11-25 18:47:50,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 18:47:50,067 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)] === [2021-11-25 18:47:50,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:47:50,068 INFO L85 PathProgramCache]: Analyzing trace with hash -145928103, now seen corresponding path program 1 times [2021-11-25 18:47:50,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:47:50,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728213617] [2021-11-25 18:47:50,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:47:50,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:47:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:47:50,517 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2021-11-25 18:47:50,518 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:47:50,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728213617] [2021-11-25 18:47:50,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728213617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:47:50,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:47:50,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:47:50,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449975912] [2021-11-25 18:47:50,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:47:50,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:47:50,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:47:50,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:47:50,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:47:50,521 INFO L87 Difference]: Start difference. First operand 17521 states and 24932 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) [2021-11-25 18:47:54,402 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:56,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:48:00,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:48:05,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:48:07,125 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:48:14,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:48:14,544 INFO L93 Difference]: Finished difference Result 17668 states and 25111 transitions. [2021-11-25 18:48:14,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:48:14,544 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 [2021-11-25 18:48:14,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:48:14,703 INFO L225 Difference]: With dead ends: 17668 [2021-11-25 18:48:14,703 INFO L226 Difference]: Without dead ends: 17664 [2021-11-25 18:48:14,709 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 [2021-11-25 18:48:14,714 INFO L933 BasicCegarLoop]: 5406 mSDtfsCounter, 5132 mSDsluCounter, 14849 mSDsCounter, 0 mSdLazyCounter, 2752 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5139 SdHoareTripleChecker+Valid, 18313 SdHoareTripleChecker+Invalid, 2758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2752 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:48:14,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5139 Valid, 18313 Invalid, 2758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2752 Invalid, 4 Unknown, 0 Unchecked, 23.2s Time] [2021-11-25 18:48:14,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17664 states. [2021-11-25 18:48:15,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17664 to 17659. [2021-11-25 18:48:15,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17659 states, 10671 states have (on average 1.3021272608002998) internal successors, (13895), 11045 states have internal predecessors, (13895), 5551 states have call successors, (5551), 1444 states have call predecessors, (5551), 1434 states have return successors, (5657), 5440 states have call predecessors, (5657), 5545 states have call successors, (5657) [2021-11-25 18:48:15,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17659 states to 17659 states and 25103 transitions. [2021-11-25 18:48:15,629 INFO L78 Accepts]: Start accepts. Automaton has 17659 states and 25103 transitions. Word has length 105 [2021-11-25 18:48:15,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:48:15,630 INFO L470 AbstractCegarLoop]: Abstraction has 17659 states and 25103 transitions. [2021-11-25 18:48:15,630 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) [2021-11-25 18:48:15,630 INFO L276 IsEmpty]: Start isEmpty. Operand 17659 states and 25103 transitions. [2021-11-25 18:48:15,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-25 18:48:15,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:48:15,634 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] [2021-11-25 18:48:15,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 18:48:15,634 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)] === [2021-11-25 18:48:15,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:48:15,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1459645431, now seen corresponding path program 1 times [2021-11-25 18:48:15,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:48:15,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101544369] [2021-11-25 18:48:15,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:15,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:48:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:16,137 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-25 18:48:16,138 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:48:16,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101544369] [2021-11-25 18:48:16,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101544369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:48:16,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:48:16,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:48:16,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978241445] [2021-11-25 18:48:16,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:48:16,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:48:16,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:48:16,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:48:16,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:48:16,144 INFO L87 Difference]: Start difference. First operand 17659 states and 25103 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) [2021-11-25 18:48:19,830 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:48:22,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:48:24,967 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:48:27,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:48:33,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:48:34,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:48:35,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:48:37,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:48:41,281 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:48:44,328 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:48:46,909 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:48:50,617 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:48:51,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:48:51,929 INFO L93 Difference]: Finished difference Result 17669 states and 25110 transitions. [2021-11-25 18:48:51,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:48:51,930 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 [2021-11-25 18:48:51,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:48:51,997 INFO L225 Difference]: With dead ends: 17669 [2021-11-25 18:48:51,997 INFO L226 Difference]: Without dead ends: 17483 [2021-11-25 18:48:52,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:48:52,009 INFO L933 BasicCegarLoop]: 5064 mSDtfsCounter, 5202 mSDsluCounter, 13969 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5205 SdHoareTripleChecker+Valid, 17237 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:48:52,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5205 Valid, 17237 Invalid, 2535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2527 Invalid, 7 Unknown, 0 Unchecked, 35.0s Time] [2021-11-25 18:48:52,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17483 states. [2021-11-25 18:48:53,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17483 to 17479. [2021-11-25 18:48:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17479 states, 10564 states have (on average 1.3043354789852328) internal successors, (13779), 10936 states have internal predecessors, (13779), 5505 states have call successors, (5505), 1416 states have call predecessors, (5505), 1407 states have return successors, (5614), 5397 states have call predecessors, (5614), 5502 states have call successors, (5614) [2021-11-25 18:48:53,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17479 states to 17479 states and 24898 transitions. [2021-11-25 18:48:53,317 INFO L78 Accepts]: Start accepts. Automaton has 17479 states and 24898 transitions. Word has length 116 [2021-11-25 18:48:53,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:48:53,317 INFO L470 AbstractCegarLoop]: Abstraction has 17479 states and 24898 transitions. [2021-11-25 18:48:53,318 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) [2021-11-25 18:48:53,318 INFO L276 IsEmpty]: Start isEmpty. Operand 17479 states and 24898 transitions. [2021-11-25 18:48:53,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-25 18:48:53,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:48:53,347 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] [2021-11-25 18:48:53,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 18:48:53,347 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:48:53,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:48:53,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2055569176, now seen corresponding path program 1 times [2021-11-25 18:48:53,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:48:53,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584264062] [2021-11-25 18:48:53,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:53,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:48:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-25 18:48:54,350 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:48:54,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584264062] [2021-11-25 18:48:54,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584264062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:48:54,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:48:54,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:48:54,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941927824] [2021-11-25 18:48:54,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:48:54,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:48:54,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:48:54,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:48:54,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:48:54,353 INFO L87 Difference]: Start difference. First operand 17479 states and 24898 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) [2021-11-25 18:48:58,595 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:49:01,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:49:04,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:49:07,280 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:49:11,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:49:14,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:49:19,963 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:49:23,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:49:23,766 INFO L93 Difference]: Finished difference Result 35020 states and 50338 transitions. [2021-11-25 18:49:23,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:49:23,768 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 [2021-11-25 18:49:23,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:49:23,852 INFO L225 Difference]: With dead ends: 35020 [2021-11-25 18:49:23,852 INFO L226 Difference]: Without dead ends: 17555 [2021-11-25 18:49:23,978 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 [2021-11-25 18:49:23,979 INFO L933 BasicCegarLoop]: 4514 mSDtfsCounter, 5 mSDsluCounter, 15670 mSDsCounter, 0 mSdLazyCounter, 2868 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18043 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2868 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:49:23,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 18043 Invalid, 2877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2868 Invalid, 6 Unknown, 0 Unchecked, 28.5s Time] [2021-11-25 18:49:23,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17555 states. [2021-11-25 18:49:25,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17555 to 17515. [2021-11-25 18:49:25,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17515 states, 10591 states have (on average 1.30355962609763) internal successors, (13806), 10963 states have internal predecessors, (13806), 5505 states have call successors, (5505), 1416 states have call predecessors, (5505), 1416 states have return successors, (5721), 5406 states have call predecessors, (5721), 5502 states have call successors, (5721) [2021-11-25 18:49:25,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17515 states to 17515 states and 25032 transitions. [2021-11-25 18:49:25,456 INFO L78 Accepts]: Start accepts. Automaton has 17515 states and 25032 transitions. Word has length 252 [2021-11-25 18:49:25,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:49:25,458 INFO L470 AbstractCegarLoop]: Abstraction has 17515 states and 25032 transitions. [2021-11-25 18:49:25,458 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) [2021-11-25 18:49:25,458 INFO L276 IsEmpty]: Start isEmpty. Operand 17515 states and 25032 transitions. [2021-11-25 18:49:25,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-25 18:49:25,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:49:25,483 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] [2021-11-25 18:49:25,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 18:49:25,484 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:49:25,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:49:25,485 INFO L85 PathProgramCache]: Analyzing trace with hash 13100330, now seen corresponding path program 1 times [2021-11-25 18:49:25,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:49:25,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823449322] [2021-11-25 18:49:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:49:25,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:49:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:49:26,628 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-25 18:49:26,629 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:49:26,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823449322] [2021-11-25 18:49:26,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823449322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:49:26,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:49:26,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:49:26,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856601061] [2021-11-25 18:49:26,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:49:26,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:49:26,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:49:26,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:49:26,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:49:26,633 INFO L87 Difference]: Start difference. First operand 17515 states and 25032 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) [2021-11-25 18:49:30,039 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:49:32,405 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:49:41,164 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:49:43,222 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:49:46,039 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:49:53,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:49:53,100 INFO L93 Difference]: Finished difference Result 17530 states and 25044 transitions. [2021-11-25 18:49:53,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:49:53,101 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 [2021-11-25 18:49:53,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:49:53,228 INFO L225 Difference]: With dead ends: 17530 [2021-11-25 18:49:53,228 INFO L226 Difference]: Without dead ends: 17528 [2021-11-25 18:49:53,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:49:53,238 INFO L933 BasicCegarLoop]: 5587 mSDtfsCounter, 5048 mSDsluCounter, 15337 mSDsCounter, 0 mSdLazyCounter, 2900 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5055 SdHoareTripleChecker+Valid, 18876 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2900 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:49:53,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5055 Valid, 18876 Invalid, 2907 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2900 Invalid, 5 Unknown, 0 Unchecked, 25.6s Time] [2021-11-25 18:49:53,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17528 states. [2021-11-25 18:49:54,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17528 to 17523. [2021-11-25 18:49:54,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17523 states, 10597 states have (on average 1.3033877512503538) internal successors, (13812), 10969 states have internal predecessors, (13812), 5505 states have call successors, (5505), 1418 states have call predecessors, (5505), 1418 states have return successors, (5721), 5406 states have call predecessors, (5721), 5502 states have call successors, (5721) [2021-11-25 18:49:54,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17523 states to 17523 states and 25038 transitions. [2021-11-25 18:49:54,444 INFO L78 Accepts]: Start accepts. Automaton has 17523 states and 25038 transitions. Word has length 257 [2021-11-25 18:49:54,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:49:54,445 INFO L470 AbstractCegarLoop]: Abstraction has 17523 states and 25038 transitions. [2021-11-25 18:49:54,445 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) [2021-11-25 18:49:54,446 INFO L276 IsEmpty]: Start isEmpty. Operand 17523 states and 25038 transitions. [2021-11-25 18:49:54,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-11-25 18:49:54,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:49:54,484 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] [2021-11-25 18:49:54,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 18:49:54,485 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)] === [2021-11-25 18:49:54,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:49:54,486 INFO L85 PathProgramCache]: Analyzing trace with hash -2140481724, now seen corresponding path program 1 times [2021-11-25 18:49:54,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:49:54,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737669195] [2021-11-25 18:49:54,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:49:54,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:49:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:49:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-25 18:49:55,329 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:49:55,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737669195] [2021-11-25 18:49:55,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737669195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:49:55,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:49:55,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:49:55,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923374395] [2021-11-25 18:49:55,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:49:55,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:49:55,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:49:55,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:49:55,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:49:55,334 INFO L87 Difference]: Start difference. First operand 17523 states and 25038 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-25 18:49:58,161 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:50:00,731 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:50:07,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:50:08,727 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:50:10,245 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:50:13,726 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:50:15,331 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:50:17,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:50:20,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:20,554 INFO L93 Difference]: Finished difference Result 51981 states and 74878 transitions. [2021-11-25 18:50:20,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:50:20,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 280 [2021-11-25 18:50:20,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:20,735 INFO L225 Difference]: With dead ends: 51981 [2021-11-25 18:50:20,735 INFO L226 Difference]: Without dead ends: 34472 [2021-11-25 18:50:20,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:50:20,825 INFO L933 BasicCegarLoop]: 7993 mSDtfsCounter, 5152 mSDsluCounter, 5194 mSDsCounter, 0 mSdLazyCounter, 1901 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5154 SdHoareTripleChecker+Valid, 12480 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1901 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:20,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5154 Valid, 12480 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1901 Invalid, 4 Unknown, 0 Unchecked, 23.4s Time] [2021-11-25 18:50:20,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34472 states. [2021-11-25 18:50:22,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34472 to 34432. [2021-11-25 18:50:22,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34432 states, 20790 states have (on average 1.301106301106301) internal successors, (27050), 21523 states have internal predecessors, (27050), 10844 states have call successors, (10844), 2795 states have call predecessors, (10844), 2795 states have return successors, (11594), 10646 states have call predecessors, (11594), 10841 states have call successors, (11594) [2021-11-25 18:50:23,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34432 states to 34432 states and 49488 transitions. [2021-11-25 18:50:23,065 INFO L78 Accepts]: Start accepts. Automaton has 34432 states and 49488 transitions. Word has length 280 [2021-11-25 18:50:23,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:23,066 INFO L470 AbstractCegarLoop]: Abstraction has 34432 states and 49488 transitions. [2021-11-25 18:50:23,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-25 18:50:23,066 INFO L276 IsEmpty]: Start isEmpty. Operand 34432 states and 49488 transitions. [2021-11-25 18:50:23,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2021-11-25 18:50:23,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:23,111 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:50:23,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 18:50:23,111 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:50:23,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:23,112 INFO L85 PathProgramCache]: Analyzing trace with hash -40897405, now seen corresponding path program 1 times [2021-11-25 18:50:23,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:23,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612291105] [2021-11-25 18:50:23,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:23,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:23,409 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:50:23,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551009298] [2021-11-25 18:50:23,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:23,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:23,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:50:23,417 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:50:23,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:50:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:27,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 9982 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:50:27,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:50:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-11-25 18:50:28,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:50:28,082 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:28,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612291105] [2021-11-25 18:50:28,083 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:50:28,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551009298] [2021-11-25 18:50:28,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551009298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:50:28,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:50:28,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:50:28,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715560784] [2021-11-25 18:50:28,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:50:28,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:50:28,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:28,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:50:28,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:50:28,087 INFO L87 Difference]: Start difference. First operand 34432 states and 49488 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2021-11-25 18:50:30,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:50:33,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:50:41,005 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:50:42,062 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:50:44,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:50:47,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:50:49,389 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:50:54,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:54,946 INFO L93 Difference]: Finished difference Result 85799 states and 124738 transitions. [2021-11-25 18:50:54,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:50:54,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 360 [2021-11-25 18:50:54,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:55,207 INFO L225 Difference]: With dead ends: 85799 [2021-11-25 18:50:55,207 INFO L226 Difference]: Without dead ends: 51381 [2021-11-25 18:50:55,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:50:55,331 INFO L933 BasicCegarLoop]: 8970 mSDtfsCounter, 5170 mSDsluCounter, 5228 mSDsCounter, 0 mSdLazyCounter, 2122 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 13488 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2122 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:55,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5172 Valid, 13488 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2122 Invalid, 4 Unknown, 0 Unchecked, 23.9s Time] [2021-11-25 18:50:55,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51381 states. [2021-11-25 18:50:58,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51381 to 51341. [2021-11-25 18:50:58,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51341 states, 30983 states have (on average 1.3003259852177) internal successors, (40288), 32077 states have internal predecessors, (40288), 16183 states have call successors, (16183), 4172 states have call predecessors, (16183), 4172 states have return successors, (17787), 15886 states have call predecessors, (17787), 16180 states have call successors, (17787) [2021-11-25 18:50:58,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51341 states to 51341 states and 74258 transitions. [2021-11-25 18:50:58,728 INFO L78 Accepts]: Start accepts. Automaton has 51341 states and 74258 transitions. Word has length 360 [2021-11-25 18:50:58,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:58,729 INFO L470 AbstractCegarLoop]: Abstraction has 51341 states and 74258 transitions. [2021-11-25 18:50:58,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2021-11-25 18:50:58,730 INFO L276 IsEmpty]: Start isEmpty. Operand 51341 states and 74258 transitions. [2021-11-25 18:50:58,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-25 18:50:58,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:58,765 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 6, 5, 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] [2021-11-25 18:50:58,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-25 18:50:58,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:58,982 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:50:58,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:58,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1804692533, now seen corresponding path program 1 times [2021-11-25 18:50:58,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:58,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134715642] [2021-11-25 18:50:58,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:58,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:59,522 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:50:59,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571010651] [2021-11-25 18:50:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:59,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:59,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:50:59,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:50:59,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1428e6e8-6620-4f6e-8b82-95a934e6d7e8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:51:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:51:02,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 10483 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 18:51:02,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:51:03,664 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-25 18:51:03,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:51:03,665 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:51:03,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134715642] [2021-11-25 18:51:03,665 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:51:03,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571010651] [2021-11-25 18:51:03,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571010651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:51:03,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:51:03,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 18:51:03,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690548119] [2021-11-25 18:51:03,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:51:03,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:51:03,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:51:03,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:51:03,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:51:03,669 INFO L87 Difference]: Start difference. First operand 51341 states and 74258 transitions. Second operand has 11 states, 11 states have (on average 13.0) internal successors, (143), 8 states have internal predecessors, (143), 2 states have call successors, (52), 2 states have call predecessors, (52), 5 states have return successors, (47), 5 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-25 18:51:08,256 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:51:11,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:51:13,433 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:51:15,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:51:17,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:51:19,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:51:21,598 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:51:23,645 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:51:25,693 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:51:27,731 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:51:31,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:51:39,694 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:51:42,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:51:50,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:51:52,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:52:01,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:52:03,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:52:05,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:52:13,020 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []