./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/bin/utaipan-7li7fVZpFI --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 a8ab8b9c7011aec39f84a1ecf826f202398208cb106ea4649e1adfd1ea4d4076 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:29:01,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:29:01,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:29:01,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:29:01,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:29:01,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:29:01,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:29:01,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:29:01,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:29:01,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:29:01,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:29:01,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:29:01,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:29:01,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:29:01,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:29:01,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:29:01,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:29:01,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:29:01,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:29:01,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:29:01,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:29:01,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:29:01,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:29:01,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:29:01,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:29:01,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:29:01,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:29:01,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:29:01,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:29:01,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:29:01,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:29:01,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:29:01,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:29:01,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:29:01,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:29:01,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:29:01,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:29:01,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:29:01,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:29:01,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:29:01,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:29:01,884 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:29:01,927 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:29:01,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:29:01,928 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:29:01,928 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:29:01,929 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:29:01,930 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:29:01,930 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:29:01,930 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:29:01,930 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:29:01,931 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:29:01,932 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:29:01,932 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:29:01,932 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:29:01,933 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:29:01,933 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:29:01,933 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:29:01,933 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:29:01,934 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:29:01,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:29:01,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:29:01,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:29:01,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:29:01,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:29:01,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:29:01,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:29:01,937 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:29:01,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:29:01,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:29:01,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:29:01,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:29:01,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:29:01,939 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:29:01,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:29:01,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:29:01,940 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:29:01,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:29:01,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:29:01,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:29:01,941 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8ab8b9c7011aec39f84a1ecf826f202398208cb106ea4649e1adfd1ea4d4076 [2022-11-03 02:29:02,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:29:02,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:29:02,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:29:02,341 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:29:02,342 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:29:02,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2022-11-03 02:29:02,439 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/bin/utaipan-7li7fVZpFI/data/d7e2ddc83/186d6af8edbc480aa55e2ac8b7341047/FLAG951fc0f95 [2022-11-03 02:29:03,506 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:29:03,507 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2022-11-03 02:29:03,556 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/bin/utaipan-7li7fVZpFI/data/d7e2ddc83/186d6af8edbc480aa55e2ac8b7341047/FLAG951fc0f95 [2022-11-03 02:29:03,857 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/bin/utaipan-7li7fVZpFI/data/d7e2ddc83/186d6af8edbc480aa55e2ac8b7341047 [2022-11-03 02:29:03,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:29:03,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:29:03,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:29:03,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:29:03,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:29:03,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:29:03" (1/1) ... [2022-11-03 02:29:03,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@372ba150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:03, skipping insertion in model container [2022-11-03 02:29:03,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:29:03" (1/1) ... [2022-11-03 02:29:03,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:29:04,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:29:07,106 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_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322443,322456] [2022-11-03 02:29:07,110 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_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322612,322625] [2022-11-03 02:29:07,111 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_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322779,322792] [2022-11-03 02:29:07,112 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_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322947,322960] [2022-11-03 02:29:07,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:29:07,219 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:29:07,636 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_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322443,322456] [2022-11-03 02:29:07,637 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_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322612,322625] [2022-11-03 02:29:07,638 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_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322779,322792] [2022-11-03 02:29:07,638 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_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322947,322960] [2022-11-03 02:29:07,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:29:07,842 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:29:07,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:07 WrapperNode [2022-11-03 02:29:07,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:29:07,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:29:07,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:29:07,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:29:07,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:07" (1/1) ... [2022-11-03 02:29:07,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:07" (1/1) ... [2022-11-03 02:29:08,177 INFO L138 Inliner]: procedures = 459, calls = 1763, calls flagged for inlining = 217, calls inlined = 199, statements flattened = 4288 [2022-11-03 02:29:08,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:29:08,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:29:08,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:29:08,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:29:08,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:07" (1/1) ... [2022-11-03 02:29:08,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:07" (1/1) ... [2022-11-03 02:29:08,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:07" (1/1) ... [2022-11-03 02:29:08,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:07" (1/1) ... [2022-11-03 02:29:08,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:07" (1/1) ... [2022-11-03 02:29:08,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:07" (1/1) ... [2022-11-03 02:29:08,424 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:07" (1/1) ... [2022-11-03 02:29:08,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:07" (1/1) ... [2022-11-03 02:29:08,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:29:08,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:29:08,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:29:08,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:29:08,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:07" (1/1) ... [2022-11-03 02:29:08,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:29:08,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:29:08,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:29:08,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27e4c60-3fe0-42f9-8c66-563d9fdc719d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:29:08,553 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_set_multicast [2022-11-03 02:29:08,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_set_multicast [2022-11-03 02:29:08,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:29:08,554 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:29:08,554 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_rx_kick [2022-11-03 02:29:08,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_rx_kick [2022-11-03 02:29:08,555 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:29:08,555 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:29:08,555 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_do_reset [2022-11-03 02:29:08,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_do_reset [2022-11-03 02:29:08,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_87 [2022-11-03 02:29:08,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_87 [2022-11-03 02:29:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:29:08,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:29:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 02:29:08,556 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 02:29:08,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:29:08,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:29:08,557 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:29:08,557 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:29:08,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_62 [2022-11-03 02:29:08,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_62 [2022-11-03 02:29:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_73 [2022-11-03 02:29:08,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_73 [2022-11-03 02:29:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2022-11-03 02:29:08,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2022-11-03 02:29:08,559 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_remove_one [2022-11-03 02:29:08,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_remove_one [2022-11-03 02:29:08,559 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:29:08,559 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:29:08,560 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_update_stats [2022-11-03 02:29:08,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_update_stats [2022-11-03 02:29:08,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:29:08,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:29:08,561 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:29:08,561 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:29:08,561 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-03 02:29:08,561 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-03 02:29:08,562 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 02:29:08,562 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 02:29:08,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:29:08,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:29:08,563 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 02:29:08,564 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 02:29:08,565 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 02:29:08,565 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 02:29:08,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:29:08,565 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 02:29:08,565 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 02:29:08,565 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:29:08,566 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:29:08,566 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:29:08,566 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:29:08,567 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_tx_timeout [2022-11-03 02:29:08,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_tx_timeout [2022-11-03 02:29:08,567 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:29:08,567 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:29:08,568 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:29:08,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:29:08,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:29:08,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:29:08,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:29:08,569 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:29:08,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:29:08,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 02:29:08,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 02:29:08,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:29:08,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:29:08,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 02:29:08,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 02:29:08,571 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-03 02:29:08,571 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-03 02:29:08,571 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 02:29:08,571 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 02:29:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 02:29:08,572 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 02:29:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:29:08,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:29:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_run_bist [2022-11-03 02:29:08,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_run_bist [2022-11-03 02:29:08,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:29:08,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 02:29:08,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 02:29:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 02:29:08,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 02:29:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-03 02:29:08,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-03 02:29:08,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:29:08,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:29:08,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:29:08,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:29:08,576 INFO L130 BoogieDeclarations]: Found specification of procedure clear_rx_desc [2022-11-03 02:29:08,577 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_rx_desc [2022-11-03 02:29:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure phy_intr [2022-11-03 02:29:08,577 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_intr [2022-11-03 02:29:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:29:08,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:29:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-03 02:29:08,578 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-03 02:29:08,578 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:29:08,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:29:08,579 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 02:29:08,579 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 02:29:08,579 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 02:29:08,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 02:29:08,579 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-03 02:29:08,580 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-03 02:29:08,580 INFO L130 BoogieDeclarations]: Found specification of procedure do_tx_done [2022-11-03 02:29:08,580 INFO L138 BoogieDeclarations]: Found implementation of procedure do_tx_done [2022-11-03 02:29:08,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_misc_lock_of_ns83820 [2022-11-03 02:29:08,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_misc_lock_of_ns83820 [2022-11-03 02:29:08,581 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:29:08,581 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:29:08,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 02:29:08,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 02:29:08,581 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-11-03 02:29:08,582 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-11-03 02:29:08,582 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 02:29:08,582 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 02:29:08,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:29:08,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:29:08,583 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_stop [2022-11-03 02:29:08,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_stop [2022-11-03 02:29:08,583 INFO L130 BoogieDeclarations]: Found specification of procedure kick_tx [2022-11-03 02:29:08,583 INFO L138 BoogieDeclarations]: Found implementation of procedure kick_tx [2022-11-03 02:29:08,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_rx_info [2022-11-03 02:29:08,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_rx_info [2022-11-03 02:29:08,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:29:08,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:29:08,584 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 02:29:08,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 02:29:08,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:29:08,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:29:08,585 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-03 02:29:08,585 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-03 02:29:08,585 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-03 02:29:08,585 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-03 02:29:08,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 02:29:08,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 02:29:08,586 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 02:29:08,586 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 02:29:08,586 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2022-11-03 02:29:08,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2022-11-03 02:29:08,586 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-03 02:29:08,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-03 02:29:08,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:29:08,587 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:29:08,587 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:29:08,587 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:29:08,587 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-03 02:29:08,588 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-03 02:29:08,588 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-03 02:29:08,588 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-03 02:29:08,588 INFO L130 BoogieDeclarations]: Found specification of procedure PRIV [2022-11-03 02:29:08,588 INFO L138 BoogieDeclarations]: Found implementation of procedure PRIV [2022-11-03 02:29:08,589 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-03 02:29:08,589 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-03 02:29:08,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:29:08,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_72 [2022-11-03 02:29:08,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_72 [2022-11-03 02:29:08,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:29:08,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:29:08,590 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 02:29:08,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 02:29:08,590 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-03 02:29:08,590 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-03 02:29:08,590 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-03 02:29:08,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-03 02:29:08,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:29:08,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:29:08,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-03 02:29:08,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-03 02:29:08,592 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-03 02:29:08,592 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-03 02:29:08,592 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 02:29:08,592 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 02:29:08,592 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:29:08,592 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:29:08,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_ns83820 [2022-11-03 02:29:08,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_ns83820 [2022-11-03 02:29:08,593 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_irq [2022-11-03 02:29:08,593 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_irq [2022-11-03 02:29:08,593 INFO L130 BoogieDeclarations]: Found specification of procedure build_rx_desc [2022-11-03 02:29:08,593 INFO L138 BoogieDeclarations]: Found implementation of procedure build_rx_desc [2022-11-03 02:29:08,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:29:08,594 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-03 02:29:08,594 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-03 02:29:08,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:29:08,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:29:08,595 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 02:29:08,595 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 02:29:08,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_misc_lock_of_ns83820 [2022-11-03 02:29:08,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_misc_lock_of_ns83820 [2022-11-03 02:29:08,595 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-03 02:29:08,595 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-03 02:29:08,596 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_open [2022-11-03 02:29:08,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_open [2022-11-03 02:29:08,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:29:08,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:29:08,596 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 02:29:08,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 02:29:08,597 INFO L130 BoogieDeclarations]: Found specification of procedure rx_irq [2022-11-03 02:29:08,597 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_irq [2022-11-03 02:29:08,597 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_disable_interrupts [2022-11-03 02:29:08,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_disable_interrupts [2022-11-03 02:29:08,597 INFO L130 BoogieDeclarations]: Found specification of procedure kick_rx [2022-11-03 02:29:08,597 INFO L138 BoogieDeclarations]: Found implementation of procedure kick_rx [2022-11-03 02:29:08,598 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 02:29:08,598 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 02:29:08,598 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 02:29:08,598 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 02:29:08,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:29:08,599 INFO L130 BoogieDeclarations]: Found specification of procedure rx_refill [2022-11-03 02:29:08,599 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_refill [2022-11-03 02:29:08,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:29:08,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:29:08,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_rx_info [2022-11-03 02:29:08,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_rx_info [2022-11-03 02:29:08,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_ns83820 [2022-11-03 02:29:08,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_ns83820 [2022-11-03 02:29:09,483 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:29:09,487 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:29:09,716 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:29:12,455 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 02:29:12,668 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:29:13,882 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:29:13,883 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:29:13,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:29:13 BoogieIcfgContainer [2022-11-03 02:29:13,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:29:13,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:29:13,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:29:13,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:29:13,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:29:03" (1/3) ... [2022-11-03 02:29:13,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5862dbf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:29:13, skipping insertion in model container [2022-11-03 02:29:13,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:07" (2/3) ... [2022-11-03 02:29:13,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5862dbf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:29:13, skipping insertion in model container [2022-11-03 02:29:13,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:29:13" (3/3) ... [2022-11-03 02:29:13,904 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2022-11-03 02:29:13,924 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:29:13,924 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 02:29:14,006 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:29:14,012 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@ebd9090, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:29:14,012 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 02:29:14,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 1364 states, 750 states have (on average 1.2333333333333334) internal successors, (925), 782 states have internal predecessors, (925), 508 states have call successors, (508), 104 states have call predecessors, (508), 103 states have return successors, (503), 499 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-03 02:29:14,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 02:29:14,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:14,035 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:14,036 INFO L420 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)] === [2022-11-03 02:29:14,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:14,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1792268557, now seen corresponding path program 1 times [2022-11-03 02:29:14,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:14,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686853580] [2022-11-03 02:29:14,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:14,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-03 02:29:14,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:14,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686853580] [2022-11-03 02:29:14,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686853580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:14,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:14,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:29:14,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099439148] [2022-11-03 02:29:14,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:14,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:29:14,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:14,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:29:14,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:14,780 INFO L87 Difference]: Start difference. First operand has 1364 states, 750 states have (on average 1.2333333333333334) internal successors, (925), 782 states have internal predecessors, (925), 508 states have call successors, (508), 104 states have call predecessors, (508), 103 states have return successors, (503), 499 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 02:29:19,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:19,256 INFO L93 Difference]: Finished difference Result 4001 states and 5836 transitions. [2022-11-03 02:29:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:29:19,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2022-11-03 02:29:19,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:19,301 INFO L225 Difference]: With dead ends: 4001 [2022-11-03 02:29:19,301 INFO L226 Difference]: Without dead ends: 2642 [2022-11-03 02:29:19,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:19,319 INFO L413 NwaCegarLoop]: 2163 mSDtfsCounter, 1848 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 3821 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:19,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1848 Valid, 3821 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-03 02:29:19,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2022-11-03 02:29:19,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2638. [2022-11-03 02:29:19,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 1460 states have (on average 1.2267123287671233) internal successors, (1791), 1522 states have internal predecessors, (1791), 972 states have call successors, (972), 204 states have call predecessors, (972), 203 states have return successors, (969), 961 states have call predecessors, (969), 969 states have call successors, (969) [2022-11-03 02:29:19,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 3732 transitions. [2022-11-03 02:29:19,681 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 3732 transitions. Word has length 87 [2022-11-03 02:29:19,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:19,682 INFO L495 AbstractCegarLoop]: Abstraction has 2638 states and 3732 transitions. [2022-11-03 02:29:19,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 02:29:19,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 3732 transitions. [2022-11-03 02:29:19,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-03 02:29:19,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:19,690 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:19,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:29:19,691 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:29:19,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:19,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1633463498, now seen corresponding path program 1 times [2022-11-03 02:29:19,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:19,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843719619] [2022-11-03 02:29:19,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:19,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-03 02:29:19,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:19,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843719619] [2022-11-03 02:29:19,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843719619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:19,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:19,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:29:19,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324590445] [2022-11-03 02:29:19,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:19,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:29:19,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:19,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:29:19,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:19,897 INFO L87 Difference]: Start difference. First operand 2638 states and 3732 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 02:29:25,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:25,357 INFO L93 Difference]: Finished difference Result 7466 states and 10514 transitions. [2022-11-03 02:29:25,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:29:25,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2022-11-03 02:29:25,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:25,389 INFO L225 Difference]: With dead ends: 7466 [2022-11-03 02:29:25,389 INFO L226 Difference]: Without dead ends: 4843 [2022-11-03 02:29:25,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:25,404 INFO L413 NwaCegarLoop]: 2091 mSDtfsCounter, 1579 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 3712 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:25,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1579 Valid, 3712 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-03 02:29:25,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4843 states. [2022-11-03 02:29:25,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4843 to 4812. [2022-11-03 02:29:25,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4812 states, 2655 states have (on average 1.215819209039548) internal successors, (3228), 2771 states have internal predecessors, (3228), 1761 states have call successors, (1761), 394 states have call predecessors, (1761), 393 states have return successors, (1764), 1740 states have call predecessors, (1764), 1758 states have call successors, (1764) [2022-11-03 02:29:25,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4812 states to 4812 states and 6753 transitions. [2022-11-03 02:29:25,722 INFO L78 Accepts]: Start accepts. Automaton has 4812 states and 6753 transitions. Word has length 98 [2022-11-03 02:29:25,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:25,724 INFO L495 AbstractCegarLoop]: Abstraction has 4812 states and 6753 transitions. [2022-11-03 02:29:25,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 02:29:25,725 INFO L276 IsEmpty]: Start isEmpty. Operand 4812 states and 6753 transitions. [2022-11-03 02:29:25,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-03 02:29:25,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:25,731 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:25,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:29:25,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:29:25,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:25,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1628614378, now seen corresponding path program 1 times [2022-11-03 02:29:25,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:25,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342804388] [2022-11-03 02:29:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:25,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:26,235 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-03 02:29:26,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:26,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342804388] [2022-11-03 02:29:26,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342804388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:26,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:26,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:29:26,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544022953] [2022-11-03 02:29:26,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:26,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:29:26,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:26,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:29:26,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:29:26,238 INFO L87 Difference]: Start difference. First operand 4812 states and 6753 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 02:29:30,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:36,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:36,378 INFO L93 Difference]: Finished difference Result 11219 states and 15669 transitions. [2022-11-03 02:29:36,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:29:36,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-11-03 02:29:36,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:36,440 INFO L225 Difference]: With dead ends: 11219 [2022-11-03 02:29:36,440 INFO L226 Difference]: Without dead ends: 6422 [2022-11-03 02:29:36,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:29:36,464 INFO L413 NwaCegarLoop]: 2780 mSDtfsCounter, 5178 mSDsluCounter, 3007 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 2216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5314 SdHoareTripleChecker+Valid, 5239 SdHoareTripleChecker+Invalid, 4588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2216 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:36,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5314 Valid, 5239 Invalid, 4588 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2216 Valid, 2372 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-11-03 02:29:36,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6422 states. [2022-11-03 02:29:36,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6422 to 6362. [2022-11-03 02:29:36,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6362 states, 3509 states have (on average 1.208036477628954) internal successors, (4239), 3677 states have internal predecessors, (4239), 2285 states have call successors, (2285), 566 states have call predecessors, (2285), 565 states have return successors, (2285), 2255 states have call predecessors, (2285), 2282 states have call successors, (2285) [2022-11-03 02:29:36,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6362 states to 6362 states and 8809 transitions. [2022-11-03 02:29:36,884 INFO L78 Accepts]: Start accepts. Automaton has 6362 states and 8809 transitions. Word has length 99 [2022-11-03 02:29:36,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:36,886 INFO L495 AbstractCegarLoop]: Abstraction has 6362 states and 8809 transitions. [2022-11-03 02:29:36,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 02:29:36,887 INFO L276 IsEmpty]: Start isEmpty. Operand 6362 states and 8809 transitions. [2022-11-03 02:29:36,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 02:29:36,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:36,895 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 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] [2022-11-03 02:29:36,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:29:36,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:29:36,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:36,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1057129919, now seen corresponding path program 1 times [2022-11-03 02:29:36,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:36,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438066619] [2022-11-03 02:29:36,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:36,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:37,110 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-03 02:29:37,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:37,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438066619] [2022-11-03 02:29:37,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438066619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:37,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:37,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:29:37,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825333407] [2022-11-03 02:29:37,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:37,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:29:37,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:37,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:29:37,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:37,112 INFO L87 Difference]: Start difference. First operand 6362 states and 8809 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 02:29:41,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:41,527 INFO L93 Difference]: Finished difference Result 17574 states and 24334 transitions. [2022-11-03 02:29:41,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:29:41,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2022-11-03 02:29:41,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:41,600 INFO L225 Difference]: With dead ends: 17574 [2022-11-03 02:29:41,600 INFO L226 Difference]: Without dead ends: 11227 [2022-11-03 02:29:41,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:41,628 INFO L413 NwaCegarLoop]: 2131 mSDtfsCounter, 1794 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1794 SdHoareTripleChecker+Valid, 3714 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:41,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1794 Valid, 3714 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-03 02:29:41,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11227 states. [2022-11-03 02:29:42,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11227 to 11191. [2022-11-03 02:29:42,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11191 states, 6174 states have (on average 1.210236475542598) internal successors, (7472), 6484 states have internal predecessors, (7472), 3997 states have call successors, (3997), 1023 states have call predecessors, (3997), 1017 states have return successors, (4025), 3921 states have call predecessors, (4025), 3994 states have call successors, (4025) [2022-11-03 02:29:42,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11191 states to 11191 states and 15494 transitions. [2022-11-03 02:29:42,395 INFO L78 Accepts]: Start accepts. Automaton has 11191 states and 15494 transitions. Word has length 102 [2022-11-03 02:29:42,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:42,396 INFO L495 AbstractCegarLoop]: Abstraction has 11191 states and 15494 transitions. [2022-11-03 02:29:42,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 02:29:42,397 INFO L276 IsEmpty]: Start isEmpty. Operand 11191 states and 15494 transitions. [2022-11-03 02:29:42,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-03 02:29:42,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:42,399 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 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] [2022-11-03 02:29:42,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:29:42,400 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:29:42,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:42,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1110193653, now seen corresponding path program 1 times [2022-11-03 02:29:42,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:42,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780129102] [2022-11-03 02:29:42,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:42,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:42,597 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-03 02:29:42,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:42,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780129102] [2022-11-03 02:29:42,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780129102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:42,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:42,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:29:42,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137669148] [2022-11-03 02:29:42,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:42,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:29:42,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:42,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:29:42,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:42,600 INFO L87 Difference]: Start difference. First operand 11191 states and 15494 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 02:29:46,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:46,440 INFO L93 Difference]: Finished difference Result 30726 states and 42389 transitions. [2022-11-03 02:29:46,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:29:46,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 103 [2022-11-03 02:29:46,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:46,665 INFO L225 Difference]: With dead ends: 30726 [2022-11-03 02:29:46,666 INFO L226 Difference]: Without dead ends: 19550 [2022-11-03 02:29:46,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:46,709 INFO L413 NwaCegarLoop]: 2408 mSDtfsCounter, 1759 mSDsluCounter, 1880 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 4049 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:46,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1759 Valid, 4049 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-03 02:29:46,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19550 states. [2022-11-03 02:29:47,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19550 to 19514. [2022-11-03 02:29:47,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19514 states, 10852 states have (on average 1.2084408403980833) internal successors, (13114), 11356 states have internal predecessors, (13114), 6828 states have call successors, (6828), 1847 states have call predecessors, (6828), 1831 states have return successors, (6890), 6662 states have call predecessors, (6890), 6825 states have call successors, (6890) [2022-11-03 02:29:47,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19514 states to 19514 states and 26832 transitions. [2022-11-03 02:29:47,913 INFO L78 Accepts]: Start accepts. Automaton has 19514 states and 26832 transitions. Word has length 103 [2022-11-03 02:29:47,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:47,914 INFO L495 AbstractCegarLoop]: Abstraction has 19514 states and 26832 transitions. [2022-11-03 02:29:47,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 02:29:47,914 INFO L276 IsEmpty]: Start isEmpty. Operand 19514 states and 26832 transitions. [2022-11-03 02:29:47,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-03 02:29:47,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:47,917 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 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] [2022-11-03 02:29:47,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:29:47,917 INFO L420 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)] === [2022-11-03 02:29:47,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:47,918 INFO L85 PathProgramCache]: Analyzing trace with hash -80829940, now seen corresponding path program 1 times [2022-11-03 02:29:47,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:47,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76541221] [2022-11-03 02:29:47,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:47,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:48,287 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-11-03 02:29:48,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:48,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76541221] [2022-11-03 02:29:48,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76541221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:48,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:48,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:29:48,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126301336] [2022-11-03 02:29:48,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:48,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:29:48,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:48,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:29:48,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:48,290 INFO L87 Difference]: Start difference. First operand 19514 states and 26832 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-11-03 02:29:53,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:53,304 INFO L93 Difference]: Finished difference Result 19520 states and 26837 transitions. [2022-11-03 02:29:53,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:29:53,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 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 125 [2022-11-03 02:29:53,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:53,416 INFO L225 Difference]: With dead ends: 19520 [2022-11-03 02:29:53,416 INFO L226 Difference]: Without dead ends: 19518 [2022-11-03 02:29:53,429 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:29:53,430 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 1873 mSDsluCounter, 3807 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 4980 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:53,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1886 Valid, 4980 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-03 02:29:53,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19518 states. [2022-11-03 02:29:54,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19518 to 19518. [2022-11-03 02:29:54,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19518 states, 10855 states have (on average 1.208383233532934) internal successors, (13117), 11359 states have internal predecessors, (13117), 6828 states have call successors, (6828), 1848 states have call predecessors, (6828), 1832 states have return successors, (6890), 6662 states have call predecessors, (6890), 6825 states have call successors, (6890) [2022-11-03 02:29:55,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19518 states to 19518 states and 26835 transitions. [2022-11-03 02:29:55,069 INFO L78 Accepts]: Start accepts. Automaton has 19518 states and 26835 transitions. Word has length 125 [2022-11-03 02:29:55,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:55,071 INFO L495 AbstractCegarLoop]: Abstraction has 19518 states and 26835 transitions. [2022-11-03 02:29:55,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-11-03 02:29:55,072 INFO L276 IsEmpty]: Start isEmpty. Operand 19518 states and 26835 transitions. [2022-11-03 02:29:55,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-03 02:29:55,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:55,075 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 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] [2022-11-03 02:29:55,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:29:55,076 INFO L420 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)] === [2022-11-03 02:29:55,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:55,077 INFO L85 PathProgramCache]: Analyzing trace with hash 11585739, now seen corresponding path program 1 times [2022-11-03 02:29:55,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:55,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975005853] [2022-11-03 02:29:55,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:55,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:55,476 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-11-03 02:29:55,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:55,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975005853] [2022-11-03 02:29:55,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975005853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:55,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:55,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:29:55,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377766224] [2022-11-03 02:29:55,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:55,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:29:55,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:55,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:29:55,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:55,479 INFO L87 Difference]: Start difference. First operand 19518 states and 26835 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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) [2022-11-03 02:30:00,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:00,420 INFO L93 Difference]: Finished difference Result 19524 states and 26840 transitions. [2022-11-03 02:30:00,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:30:00,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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 130 [2022-11-03 02:30:00,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:00,525 INFO L225 Difference]: With dead ends: 19524 [2022-11-03 02:30:00,526 INFO L226 Difference]: Without dead ends: 19522 [2022-11-03 02:30:00,539 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:30:00,540 INFO L413 NwaCegarLoop]: 1668 mSDtfsCounter, 1868 mSDsluCounter, 3807 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1880 SdHoareTripleChecker+Valid, 4983 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:00,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1880 Valid, 4983 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-03 02:30:00,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19522 states. [2022-11-03 02:30:02,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19522 to 19522. [2022-11-03 02:30:02,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19522 states, 10858 states have (on average 1.2083256585006448) internal successors, (13120), 11362 states have internal predecessors, (13120), 6828 states have call successors, (6828), 1849 states have call predecessors, (6828), 1833 states have return successors, (6890), 6662 states have call predecessors, (6890), 6825 states have call successors, (6890) [2022-11-03 02:30:02,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19522 states to 19522 states and 26838 transitions. [2022-11-03 02:30:02,153 INFO L78 Accepts]: Start accepts. Automaton has 19522 states and 26838 transitions. Word has length 130 [2022-11-03 02:30:02,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:02,154 INFO L495 AbstractCegarLoop]: Abstraction has 19522 states and 26838 transitions. [2022-11-03 02:30:02,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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) [2022-11-03 02:30:02,154 INFO L276 IsEmpty]: Start isEmpty. Operand 19522 states and 26838 transitions. [2022-11-03 02:30:02,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-03 02:30:02,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:02,157 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:30:02,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:30:02,157 INFO L420 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)] === [2022-11-03 02:30:02,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:02,158 INFO L85 PathProgramCache]: Analyzing trace with hash 983636268, now seen corresponding path program 1 times [2022-11-03 02:30:02,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:02,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77984163] [2022-11-03 02:30:02,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:02,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:02,494 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-11-03 02:30:02,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:02,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77984163] [2022-11-03 02:30:02,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77984163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:02,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:02,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:30:02,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367831676] [2022-11-03 02:30:02,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:02,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:30:02,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:02,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:30:02,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:30:02,497 INFO L87 Difference]: Start difference. First operand 19522 states and 26838 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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) [2022-11-03 02:30:06,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:07,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:07,430 INFO L93 Difference]: Finished difference Result 19528 states and 26843 transitions. [2022-11-03 02:30:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:30:07,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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 135 [2022-11-03 02:30:07,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:07,537 INFO L225 Difference]: With dead ends: 19528 [2022-11-03 02:30:07,537 INFO L226 Difference]: Without dead ends: 19526 [2022-11-03 02:30:07,551 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:30:07,551 INFO L413 NwaCegarLoop]: 1668 mSDtfsCounter, 1868 mSDsluCounter, 3807 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 4983 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:07,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1879 Valid, 4983 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-03 02:30:07,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19526 states. [2022-11-03 02:30:09,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19526 to 19526. [2022-11-03 02:30:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19526 states, 10861 states have (on average 1.2082681152748365) internal successors, (13123), 11365 states have internal predecessors, (13123), 6828 states have call successors, (6828), 1850 states have call predecessors, (6828), 1834 states have return successors, (6890), 6662 states have call predecessors, (6890), 6825 states have call successors, (6890) [2022-11-03 02:30:09,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19526 states to 19526 states and 26841 transitions. [2022-11-03 02:30:09,518 INFO L78 Accepts]: Start accepts. Automaton has 19526 states and 26841 transitions. Word has length 135 [2022-11-03 02:30:09,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:09,521 INFO L495 AbstractCegarLoop]: Abstraction has 19526 states and 26841 transitions. [2022-11-03 02:30:09,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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) [2022-11-03 02:30:09,521 INFO L276 IsEmpty]: Start isEmpty. Operand 19526 states and 26841 transitions. [2022-11-03 02:30:09,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-03 02:30:09,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:09,524 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:30:09,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:30:09,525 INFO L420 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)] === [2022-11-03 02:30:09,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:09,525 INFO L85 PathProgramCache]: Analyzing trace with hash -536480469, now seen corresponding path program 1 times [2022-11-03 02:30:09,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:09,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559330246] [2022-11-03 02:30:09,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:09,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:09,920 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-11-03 02:30:09,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:09,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559330246] [2022-11-03 02:30:09,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559330246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:09,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:09,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:30:09,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875254563] [2022-11-03 02:30:09,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:09,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:30:09,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:09,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:30:09,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:30:09,924 INFO L87 Difference]: Start difference. First operand 19526 states and 26841 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:30:14,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:14,795 INFO L93 Difference]: Finished difference Result 19532 states and 26846 transitions. [2022-11-03 02:30:14,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:30:14,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 140 [2022-11-03 02:30:14,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:14,884 INFO L225 Difference]: With dead ends: 19532 [2022-11-03 02:30:14,884 INFO L226 Difference]: Without dead ends: 19530 [2022-11-03 02:30:14,896 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:30:14,896 INFO L413 NwaCegarLoop]: 1668 mSDtfsCounter, 1868 mSDsluCounter, 3807 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 4983 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:14,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1878 Valid, 4983 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-03 02:30:14,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2022-11-03 02:30:16,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 19530. [2022-11-03 02:30:16,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19530 states, 10864 states have (on average 1.2082106038291605) internal successors, (13126), 11368 states have internal predecessors, (13126), 6828 states have call successors, (6828), 1851 states have call predecessors, (6828), 1835 states have return successors, (6890), 6662 states have call predecessors, (6890), 6825 states have call successors, (6890) [2022-11-03 02:30:16,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19530 states to 19530 states and 26844 transitions. [2022-11-03 02:30:16,529 INFO L78 Accepts]: Start accepts. Automaton has 19530 states and 26844 transitions. Word has length 140 [2022-11-03 02:30:16,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:16,529 INFO L495 AbstractCegarLoop]: Abstraction has 19530 states and 26844 transitions. [2022-11-03 02:30:16,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:30:16,530 INFO L276 IsEmpty]: Start isEmpty. Operand 19530 states and 26844 transitions. [2022-11-03 02:30:16,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 02:30:16,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:16,534 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 6, 6, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:30:16,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:30:16,534 INFO L420 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)] === [2022-11-03 02:30:16,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:16,535 INFO L85 PathProgramCache]: Analyzing trace with hash -588992094, now seen corresponding path program 1 times [2022-11-03 02:30:16,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:16,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677708459] [2022-11-03 02:30:16,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:16,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-11-03 02:30:17,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:17,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677708459] [2022-11-03 02:30:17,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677708459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:17,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:17,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:30:17,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151358981] [2022-11-03 02:30:17,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:17,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:30:17,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:17,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:30:17,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:30:17,007 INFO L87 Difference]: Start difference. First operand 19530 states and 26844 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 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) [2022-11-03 02:30:20,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:21,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:23,656 INFO L93 Difference]: Finished difference Result 19536 states and 26849 transitions. [2022-11-03 02:30:23,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:30:23,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 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 154 [2022-11-03 02:30:23,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:23,762 INFO L225 Difference]: With dead ends: 19536 [2022-11-03 02:30:23,763 INFO L226 Difference]: Without dead ends: 19534 [2022-11-03 02:30:23,777 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:30:23,778 INFO L413 NwaCegarLoop]: 1668 mSDtfsCounter, 1864 mSDsluCounter, 3807 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 4983 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:23,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1873 Valid, 4983 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-03 02:30:23,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19534 states. [2022-11-03 02:30:25,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19534 to 19534. [2022-11-03 02:30:25,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19534 states, 10867 states have (on average 1.2081531241372965) internal successors, (13129), 11371 states have internal predecessors, (13129), 6828 states have call successors, (6828), 1852 states have call predecessors, (6828), 1836 states have return successors, (6890), 6662 states have call predecessors, (6890), 6825 states have call successors, (6890) [2022-11-03 02:30:25,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19534 states to 19534 states and 26847 transitions. [2022-11-03 02:30:25,946 INFO L78 Accepts]: Start accepts. Automaton has 19534 states and 26847 transitions. Word has length 154 [2022-11-03 02:30:25,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:25,947 INFO L495 AbstractCegarLoop]: Abstraction has 19534 states and 26847 transitions. [2022-11-03 02:30:25,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 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) [2022-11-03 02:30:25,947 INFO L276 IsEmpty]: Start isEmpty. Operand 19534 states and 26847 transitions. [2022-11-03 02:30:25,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-03 02:30:25,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:25,968 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:30:25,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:30:25,969 INFO L420 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)] === [2022-11-03 02:30:25,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:25,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1507288565, now seen corresponding path program 1 times [2022-11-03 02:30:25,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:25,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774460830] [2022-11-03 02:30:25,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:25,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:26,529 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-03 02:30:26,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:26,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774460830] [2022-11-03 02:30:26,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774460830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:26,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:26,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:30:26,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516520470] [2022-11-03 02:30:26,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:26,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:30:26,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:26,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:30:26,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:30:26,534 INFO L87 Difference]: Start difference. First operand 19534 states and 26847 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:30:30,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:32,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:32,324 INFO L93 Difference]: Finished difference Result 19540 states and 26852 transitions. [2022-11-03 02:30:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:30:32,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 159 [2022-11-03 02:30:32,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:32,403 INFO L225 Difference]: With dead ends: 19540 [2022-11-03 02:30:32,404 INFO L226 Difference]: Without dead ends: 19538 [2022-11-03 02:30:32,412 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:30:32,413 INFO L413 NwaCegarLoop]: 1668 mSDtfsCounter, 1864 mSDsluCounter, 3807 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 4983 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:32,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 4983 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-03 02:30:32,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19538 states. [2022-11-03 02:30:34,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19538 to 19538. [2022-11-03 02:30:34,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19538 states, 10870 states have (on average 1.208095676172953) internal successors, (13132), 11374 states have internal predecessors, (13132), 6828 states have call successors, (6828), 1853 states have call predecessors, (6828), 1837 states have return successors, (6890), 6662 states have call predecessors, (6890), 6825 states have call successors, (6890) [2022-11-03 02:30:34,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19538 states to 19538 states and 26850 transitions. [2022-11-03 02:30:34,162 INFO L78 Accepts]: Start accepts. Automaton has 19538 states and 26850 transitions. Word has length 159 [2022-11-03 02:30:34,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:34,163 INFO L495 AbstractCegarLoop]: Abstraction has 19538 states and 26850 transitions. [2022-11-03 02:30:34,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:30:34,163 INFO L276 IsEmpty]: Start isEmpty. Operand 19538 states and 26850 transitions. [2022-11-03 02:30:34,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-03 02:30:34,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:34,166 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:30:34,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:30:34,167 INFO L420 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)] === [2022-11-03 02:30:34,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:34,167 INFO L85 PathProgramCache]: Analyzing trace with hash -634092222, now seen corresponding path program 1 times [2022-11-03 02:30:34,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:34,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107921158] [2022-11-03 02:30:34,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:34,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:34,514 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-11-03 02:30:34,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:34,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107921158] [2022-11-03 02:30:34,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107921158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:34,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:34,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:30:34,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497374990] [2022-11-03 02:30:34,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:34,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:30:34,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:34,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:30:34,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:30:34,518 INFO L87 Difference]: Start difference. First operand 19538 states and 26850 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 02:30:39,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:44,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:44,759 INFO L93 Difference]: Finished difference Result 37559 states and 51871 transitions. [2022-11-03 02:30:44,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:30:44,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 164 [2022-11-03 02:30:44,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:44,932 INFO L225 Difference]: With dead ends: 37559 [2022-11-03 02:30:44,932 INFO L226 Difference]: Without dead ends: 37557 [2022-11-03 02:30:44,953 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:30:44,954 INFO L413 NwaCegarLoop]: 2238 mSDtfsCounter, 1786 mSDsluCounter, 6863 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1793 SdHoareTripleChecker+Valid, 8327 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:44,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1793 Valid, 8327 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-03 02:30:44,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37557 states. [2022-11-03 02:30:47,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37557 to 37505. [2022-11-03 02:30:47,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37505 states, 20912 states have (on average 1.210788064269319) internal successors, (25320), 21959 states have internal predecessors, (25320), 13039 states have call successors, (13039), 3657 states have call predecessors, (13039), 3551 states have return successors, (13461), 12525 states have call predecessors, (13461), 13033 states have call successors, (13461) [2022-11-03 02:30:47,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37505 states to 37505 states and 51820 transitions. [2022-11-03 02:30:47,772 INFO L78 Accepts]: Start accepts. Automaton has 37505 states and 51820 transitions. Word has length 164 [2022-11-03 02:30:47,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:47,773 INFO L495 AbstractCegarLoop]: Abstraction has 37505 states and 51820 transitions. [2022-11-03 02:30:47,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 02:30:47,773 INFO L276 IsEmpty]: Start isEmpty. Operand 37505 states and 51820 transitions. [2022-11-03 02:30:47,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-03 02:30:47,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:47,777 INFO L195 NwaCegarLoop]: trace histogram [11, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:30:47,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:30:47,777 INFO L420 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)] === [2022-11-03 02:30:47,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:47,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1974797781, now seen corresponding path program 1 times [2022-11-03 02:30:47,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:47,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142333961] [2022-11-03 02:30:47,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:47,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:48,083 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2022-11-03 02:30:48,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:48,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142333961] [2022-11-03 02:30:48,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142333961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:48,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:48,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:30:48,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195792409] [2022-11-03 02:30:48,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:48,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:30:48,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:48,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:30:48,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:30:48,087 INFO L87 Difference]: Start difference. First operand 37505 states and 51820 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:30:54,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:54,079 INFO L93 Difference]: Finished difference Result 37515 states and 51829 transitions. [2022-11-03 02:30:54,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:30:54,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 169 [2022-11-03 02:30:54,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:54,195 INFO L225 Difference]: With dead ends: 37515 [2022-11-03 02:30:54,195 INFO L226 Difference]: Without dead ends: 37513 [2022-11-03 02:30:54,210 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:30:54,211 INFO L413 NwaCegarLoop]: 1668 mSDtfsCounter, 1864 mSDsluCounter, 3807 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 4983 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:54,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1870 Valid, 4983 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-03 02:30:54,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37513 states. [2022-11-03 02:30:57,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37513 to 37513. [2022-11-03 02:30:57,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37513 states, 20918 states have (on average 1.2107276030213214) internal successors, (25326), 21965 states have internal predecessors, (25326), 13039 states have call successors, (13039), 3659 states have call predecessors, (13039), 3553 states have return successors, (13461), 12525 states have call predecessors, (13461), 13033 states have call successors, (13461) [2022-11-03 02:30:58,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37513 states to 37513 states and 51826 transitions. [2022-11-03 02:30:58,017 INFO L78 Accepts]: Start accepts. Automaton has 37513 states and 51826 transitions. Word has length 169 [2022-11-03 02:30:58,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:58,017 INFO L495 AbstractCegarLoop]: Abstraction has 37513 states and 51826 transitions. [2022-11-03 02:30:58,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:30:58,018 INFO L276 IsEmpty]: Start isEmpty. Operand 37513 states and 51826 transitions. [2022-11-03 02:30:58,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-03 02:30:58,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:58,021 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:30:58,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:30:58,021 INFO L420 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)] === [2022-11-03 02:30:58,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:58,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1903821026, now seen corresponding path program 1 times [2022-11-03 02:30:58,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:58,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801566509] [2022-11-03 02:30:58,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:58,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:58,376 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2022-11-03 02:30:58,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:58,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801566509] [2022-11-03 02:30:58,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801566509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:58,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:58,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:30:58,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524755722] [2022-11-03 02:30:58,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:58,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:30:58,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:58,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:30:58,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:30:58,379 INFO L87 Difference]: Start difference. First operand 37513 states and 51826 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)