./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_c4c4f579-662d-4803-bf68-0d97a3060de0/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c4f579-662d-4803-bf68-0d97a3060de0/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c4f579-662d-4803-bf68-0d97a3060de0/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c4f579-662d-4803-bf68-0d97a3060de0/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c4f579-662d-4803-bf68-0d97a3060de0/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c4f579-662d-4803-bf68-0d97a3060de0/bin/utaipan-Q6hlc19bkW --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 6eed6410a0dd7e708ffb27250b590aa2913bf9f742c15130caf6eadad29510cc --- 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-4e7fbc6 [2022-11-23 13:41:48,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:41:48,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:41:48,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:41:48,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:41:48,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:41:48,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:41:48,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:41:48,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:41:48,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:41:48,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:41:48,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:41:48,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:41:48,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:41:48,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:41:48,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:41:48,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:41:48,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:41:48,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:41:48,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:41:48,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:41:48,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:41:48,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:41:48,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:41:48,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:41:48,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:41:48,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:41:48,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:41:48,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:41:48,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:41:48,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:41:48,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:41:48,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:41:48,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:41:48,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:41:48,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:41:48,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:41:48,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:41:48,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:41:48,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:41:48,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:41:48,942 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c4f579-662d-4803-bf68-0d97a3060de0/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 13:41:48,977 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:41:48,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:41:48,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:41:48,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:41:48,979 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:41:48,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:41:48,980 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:41:48,980 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:41:48,980 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:41:48,981 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:41:48,982 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:41:48,982 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:41:48,982 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:41:48,982 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:41:48,983 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:41:48,983 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:41:48,983 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:41:48,983 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:41:48,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:41:48,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:41:48,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:41:48,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:41:48,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:41:48,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:41:48,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:41:48,986 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:41:48,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:41:48,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:41:48,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:41:48,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:41:48,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:41:48,988 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:41:48,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:41:48,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:41:48,989 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:41:48,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:41:48,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:41:48,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:41:48,991 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_c4c4f579-662d-4803-bf68-0d97a3060de0/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c4f579-662d-4803-bf68-0d97a3060de0/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6eed6410a0dd7e708ffb27250b590aa2913bf9f742c15130caf6eadad29510cc [2022-11-23 13:41:49,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:41:49,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:41:49,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:41:49,332 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:41:49,332 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:41:49,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c4f579-662d-4803-bf68-0d97a3060de0/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-23 13:41:52,308 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:41:53,025 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:41:53,026 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c4f579-662d-4803-bf68-0d97a3060de0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-23 13:41:53,101 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c4f579-662d-4803-bf68-0d97a3060de0/bin/utaipan-Q6hlc19bkW/data/bad2d0861/f0b2319eb7874e5d8d9f86da35e59147/FLAGcec1abd85 [2022-11-23 13:41:53,119 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c4f579-662d-4803-bf68-0d97a3060de0/bin/utaipan-Q6hlc19bkW/data/bad2d0861/f0b2319eb7874e5d8d9f86da35e59147 [2022-11-23 13:41:53,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:41:53,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:41:53,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:41:53,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:41:53,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:41:53,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:41:53" (1/1) ... [2022-11-23 13:41:53,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@125e8253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:53, skipping insertion in model container [2022-11-23 13:41:53,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:41:53" (1/1) ... [2022-11-23 13:41:53,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:41:53,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:41:57,002 WARN L237 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_c4c4f579-662d-4803-bf68-0d97a3060de0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404089,404102] [2022-11-23 13:41:57,006 WARN L237 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_c4c4f579-662d-4803-bf68-0d97a3060de0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404258,404271] [2022-11-23 13:41:57,007 WARN L237 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_c4c4f579-662d-4803-bf68-0d97a3060de0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404425,404438] [2022-11-23 13:41:57,007 WARN L237 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_c4c4f579-662d-4803-bf68-0d97a3060de0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404593,404606] [2022-11-23 13:41:57,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:41:57,123 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:41:57,550 WARN L237 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_c4c4f579-662d-4803-bf68-0d97a3060de0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404089,404102] [2022-11-23 13:41:57,550 WARN L237 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_c4c4f579-662d-4803-bf68-0d97a3060de0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404258,404271] [2022-11-23 13:41:57,551 WARN L237 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_c4c4f579-662d-4803-bf68-0d97a3060de0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404425,404438] [2022-11-23 13:41:57,552 WARN L237 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_c4c4f579-662d-4803-bf68-0d97a3060de0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404593,404606] [2022-11-23 13:41:57,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:41:57,906 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:41:57,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:57 WrapperNode [2022-11-23 13:41:57,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:41:57,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:41:57,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:41:57,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:41:57,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:57" (1/1) ... [2022-11-23 13:41:58,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:57" (1/1) ... [2022-11-23 13:41:58,218 INFO L138 Inliner]: procedures = 559, calls = 2809, calls flagged for inlining = 291, calls inlined = 253, statements flattened = 5834 [2022-11-23 13:41:58,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:41:58,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:41:58,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:41:58,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:41:58,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:57" (1/1) ... [2022-11-23 13:41:58,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:57" (1/1) ... [2022-11-23 13:41:58,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:57" (1/1) ... [2022-11-23 13:41:58,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:57" (1/1) ... [2022-11-23 13:41:58,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:57" (1/1) ... [2022-11-23 13:41:58,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:57" (1/1) ... [2022-11-23 13:41:58,504 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:57" (1/1) ... [2022-11-23 13:41:58,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:57" (1/1) ... [2022-11-23 13:41:58,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:41:58,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:41:58,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:41:58,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:41:58,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:57" (1/1) ... [2022-11-23 13:41:58,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:41:58,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c4f579-662d-4803-bf68-0d97a3060de0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:41:58,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c4f579-662d-4803-bf68-0d97a3060de0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:41:58,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c4f579-662d-4803-bf68-0d97a3060de0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:41:58,650 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-23 13:41:58,651 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-23 13:41:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 13:41:58,651 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 13:41:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-23 13:41:58,651 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-23 13:41:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-23 13:41:58,651 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-23 13:41:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 13:41:58,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 13:41:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-23 13:41:58,652 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-23 13:41:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 13:41:58,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 13:41:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure free_tbufs [2022-11-23 13:41:58,652 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tbufs [2022-11-23 13:41:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_80 [2022-11-23 13:41:58,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_80 [2022-11-23 13:41:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-23 13:41:58,654 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-23 13:41:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 13:41:58,654 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 13:41:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-23 13:41:58,655 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-23 13:41:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 13:41:58,655 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 13:41:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-23 13:41:58,655 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-23 13:41:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_poll [2022-11-23 13:41:58,655 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_poll [2022-11-23 13:41:58,656 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-23 13:41:58,656 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-23 13:41:58,656 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-23 13:41:58,656 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-23 13:41:58,656 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_low [2022-11-23 13:41:58,656 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_low [2022-11-23 13:41:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-23 13:41:58,657 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-23 13:41:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 13:41:58,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 13:41:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-23 13:41:58,657 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-23 13:41:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-23 13:41:58,658 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-23 13:41:58,658 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 13:41:58,658 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 13:41:58,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 13:41:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 13:41:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-23 13:41:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-23 13:41:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:41:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_62 [2022-11-23 13:41:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_62 [2022-11-23 13:41:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-23 13:41:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-23 13:41:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit [2022-11-23 13:41:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit [2022-11-23 13:41:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 13:41:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 13:41:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 13:41:58,661 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 13:41:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_rbufs [2022-11-23 13:41:58,661 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_rbufs [2022-11-23 13:41:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 13:41:58,661 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 13:41:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 13:41:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 13:41:58,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 13:41:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_interrupt [2022-11-23 13:41:58,662 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_interrupt [2022-11-23 13:41:58,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 13:41:58,663 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 13:41:58,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 13:41:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 13:41:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 13:41:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-23 13:41:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-23 13:41:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_disable [2022-11-23 13:41:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_disable [2022-11-23 13:41:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-11-23 13:41:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-11-23 13:41:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-23 13:41:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-23 13:41:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 13:41:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 13:41:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_carrier [2022-11-23 13:41:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_carrier [2022-11-23 13:41:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-23 13:41:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-23 13:41:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_shutdown [2022-11-23 13:41:58,667 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_shutdown [2022-11-23 13:41:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 13:41:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 13:41:58,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 13:41:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 13:41:58,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 13:41:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-23 13:41:58,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-23 13:41:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-23 13:41:58,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-23 13:41:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:41:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2022-11-23 13:41:58,668 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2022-11-23 13:41:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 13:41:58,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 13:41:58,672 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 13:41:58,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 13:41:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 13:41:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 13:41:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-23 13:41:58,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-23 13:41:58,675 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 13:41:58,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 13:41:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_rx_mode [2022-11-23 13:41:58,687 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_rx_mode [2022-11-23 13:41:58,687 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 13:41:58,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 13:41:58,687 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_rx_crc_and_missed_errord [2022-11-23 13:41:58,687 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_rx_crc_and_missed_errord [2022-11-23 13:41:58,687 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2022-11-23 13:41:58,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2022-11-23 13:41:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_rhine_private [2022-11-23 13:41:58,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_rhine_private [2022-11-23 13:41:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-23 13:41:58,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-23 13:41:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-23 13:41:58,688 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-23 13:41:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 13:41:58,688 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 13:41:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-23 13:41:58,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-23 13:41:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2022-11-23 13:41:58,689 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2022-11-23 13:41:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 13:41:58,689 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 13:41:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_68 [2022-11-23 13:41:58,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_68 [2022-11-23 13:41:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_power_init [2022-11-23 13:41:58,689 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_power_init [2022-11-23 13:41:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_tx_timeout [2022-11-23 13:41:58,690 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_tx_timeout [2022-11-23 13:41:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_rhine_private [2022-11-23 13:41:58,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_rhine_private [2022-11-23 13:41:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-23 13:41:58,690 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-23 13:41:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:41:58,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:41:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-23 13:41:58,690 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-23 13:41:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 13:41:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 13:41:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 13:41:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 13:41:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 13:41:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-23 13:41:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_chip_reset [2022-11-23 13:41:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_chip_reset [2022-11-23 13:41:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 13:41:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 13:41:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-23 13:41:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-23 13:41:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 13:41:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 13:41:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_cam_mask [2022-11-23 13:41:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_cam_mask [2022-11-23 13:41:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2022-11-23 13:41:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2022-11-23 13:41:58,693 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 13:41:58,693 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 13:41:58,693 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_remove_one [2022-11-23 13:41:58,693 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_remove_one [2022-11-23 13:41:58,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-23 13:41:58,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-23 13:41:58,693 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-23 13:41:58,693 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-23 13:41:58,693 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_close [2022-11-23 13:41:58,694 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_close [2022-11-23 13:41:58,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_79 [2022-11-23 13:41:58,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_79 [2022-11-23 13:41:58,694 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 13:41:58,694 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 13:41:58,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:41:58,694 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 13:41:58,694 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 13:41:58,694 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-23 13:41:58,694 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-23 13:41:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 13:41:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_check_media [2022-11-23 13:41:58,695 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_check_media [2022-11-23 13:41:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2022-11-23 13:41:58,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2022-11-23 13:41:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 13:41:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure free_rbufs [2022-11-23 13:41:58,695 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rbufs [2022-11-23 13:41:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_get_events [2022-11-23 13:41:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_get_events [2022-11-23 13:41:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-23 13:41:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-23 13:41:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-23 13:41:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-23 13:41:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure enable_mmio [2022-11-23 13:41:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_mmio [2022-11-23 13:41:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_vlan_cam_mask [2022-11-23 13:41:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_vlan_cam_mask [2022-11-23 13:41:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-23 13:41:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-23 13:41:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-23 13:41:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-23 13:41:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 13:41:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 13:41:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-23 13:41:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-23 13:41:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 13:41:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 13:41:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-23 13:41:58,698 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-23 13:41:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-23 13:41:58,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-23 13:41:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-23 13:41:58,698 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-23 13:41:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 13:41:58,698 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 13:41:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_63 [2022-11-23 13:41:58,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_63 [2022-11-23 13:41:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_disable_linkmon [2022-11-23 13:41:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_disable_linkmon [2022-11-23 13:41:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_ack_events [2022-11-23 13:41:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_ack_events [2022-11-23 13:41:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 13:41:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 13:41:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_resume [2022-11-23 13:41:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_resume [2022-11-23 13:41:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 13:41:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_67 [2022-11-23 13:41:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_67 [2022-11-23 13:41:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 13:41:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 13:41:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2022-11-23 13:41:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2022-11-23 13:41:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-23 13:41:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-23 13:41:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_high [2022-11-23 13:41:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_high [2022-11-23 13:41:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_irq_disable [2022-11-23 13:41:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_irq_disable [2022-11-23 13:41:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_enable [2022-11-23 13:41:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_enable [2022-11-23 13:41:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_tbufs [2022-11-23 13:41:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_tbufs [2022-11-23 13:41:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-23 13:41:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-23 13:41:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 13:41:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 13:41:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-23 13:41:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-23 13:41:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-23 13:41:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-23 13:41:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_enable_linkmon [2022-11-23 13:41:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_enable_linkmon [2022-11-23 13:41:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_vcam [2022-11-23 13:41:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_vcam [2022-11-23 13:41:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 13:41:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 13:41:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-23 13:41:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-23 13:41:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:41:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_suspend [2022-11-23 13:41:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_suspend [2022-11-23 13:41:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_open [2022-11-23 13:41:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_open [2022-11-23 13:41:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 13:41:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 13:41:59,692 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:41:59,696 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:41:59,891 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 13:52:01,056 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 13:52:01,197 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:52:05,539 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:52:05,540 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-23 13:52:05,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:05 BoogieIcfgContainer [2022-11-23 13:52:05,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:52:05,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:52:05,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:52:05,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:52:05,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:41:53" (1/3) ... [2022-11-23 13:52:05,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d809002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:05, skipping insertion in model container [2022-11-23 13:52:05,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:57" (2/3) ... [2022-11-23 13:52:05,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d809002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:05, skipping insertion in model container [2022-11-23 13:52:05,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:05" (3/3) ... [2022-11-23 13:52:05,562 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-23 13:52:05,587 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:52:05,587 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-23 13:52:05,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:52:05,735 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;@5ef756cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:52:05,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-23 13:52:05,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 1684 states, 951 states have (on average 1.3112513144058886) internal successors, (1247), 1000 states have internal predecessors, (1247), 604 states have call successors, (604), 128 states have call predecessors, (604), 127 states have return successors, (595), 582 states have call predecessors, (595), 595 states have call successors, (595) [2022-11-23 13:52:05,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-23 13:52:05,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:05,790 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 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] [2022-11-23 13:52:05,791 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)] === [2022-11-23 13:52:05,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:05,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1548668371, now seen corresponding path program 1 times [2022-11-23 13:52:05,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:05,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756297511] [2022-11-23 13:52:05,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:05,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:09,504 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2022-11-23 13:52:09,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:52:09,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756297511] [2022-11-23 13:52:09,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756297511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:52:09,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:52:09,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:52:09,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100608002] [2022-11-23 13:52:09,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:52:09,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:52:09,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:52:09,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:52:09,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:52:09,587 INFO L87 Difference]: Start difference. First operand has 1684 states, 951 states have (on average 1.3112513144058886) internal successors, (1247), 1000 states have internal predecessors, (1247), 604 states have call successors, (604), 128 states have call predecessors, (604), 127 states have return successors, (595), 582 states have call predecessors, (595), 595 states have call successors, (595) 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-23 13:52:11,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:52:18,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:52:18,107 INFO L93 Difference]: Finished difference Result 4901 states and 7279 transitions. [2022-11-23 13:52:18,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:52:18,110 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 165 [2022-11-23 13:52:18,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:52:18,169 INFO L225 Difference]: With dead ends: 4901 [2022-11-23 13:52:18,169 INFO L226 Difference]: Without dead ends: 3233 [2022-11-23 13:52:18,193 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 [2022-11-23 13:52:18,197 INFO L413 NwaCegarLoop]: 2632 mSDtfsCounter, 2301 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 4676 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:52:18,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2301 Valid, 4676 Invalid, 728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 718 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2022-11-23 13:52:18,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3233 states. [2022-11-23 13:52:18,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3233 to 3229. [2022-11-23 13:52:18,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3229 states, 1836 states have (on average 1.3044662309368191) internal successors, (2395), 1931 states have internal predecessors, (2395), 1140 states have call successors, (1140), 251 states have call predecessors, (1140), 250 states have return successors, (1136), 1110 states have call predecessors, (1136), 1136 states have call successors, (1136) [2022-11-23 13:52:18,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3229 states to 3229 states and 4671 transitions. [2022-11-23 13:52:18,627 INFO L78 Accepts]: Start accepts. Automaton has 3229 states and 4671 transitions. Word has length 165 [2022-11-23 13:52:18,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:52:18,632 INFO L495 AbstractCegarLoop]: Abstraction has 3229 states and 4671 transitions. [2022-11-23 13:52:18,632 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-23 13:52:18,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3229 states and 4671 transitions. [2022-11-23 13:52:18,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-23 13:52:18,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:18,654 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:52:18,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:52:18,655 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)] === [2022-11-23 13:52:18,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:18,656 INFO L85 PathProgramCache]: Analyzing trace with hash -535378237, now seen corresponding path program 1 times [2022-11-23 13:52:18,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:18,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791942682] [2022-11-23 13:52:18,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:18,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:20,669 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-11-23 13:52:20,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:52:20,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791942682] [2022-11-23 13:52:20,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791942682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:52:20,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:52:20,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:52:20,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195484530] [2022-11-23 13:52:20,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:52:20,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:52:20,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:52:20,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:52:20,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:52:20,674 INFO L87 Difference]: Start difference. First operand 3229 states and 4671 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 13:52:22,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:52:30,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:52:30,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:52:30,790 INFO L93 Difference]: Finished difference Result 9107 states and 13119 transitions. [2022-11-23 13:52:30,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:52:30,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 169 [2022-11-23 13:52:30,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:52:30,841 INFO L225 Difference]: With dead ends: 9107 [2022-11-23 13:52:30,842 INFO L226 Difference]: Without dead ends: 5907 [2022-11-23 13:52:30,862 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 [2022-11-23 13:52:30,863 INFO L413 NwaCegarLoop]: 2549 mSDtfsCounter, 1960 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1960 SdHoareTripleChecker+Valid, 4557 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-23 13:52:30,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1960 Valid, 4557 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 732 Invalid, 2 Unknown, 0 Unchecked, 9.6s Time] [2022-11-23 13:52:30,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5907 states. [2022-11-23 13:52:31,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5907 to 5878. [2022-11-23 13:52:31,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5878 states, 3331 states have (on average 1.2957069948964275) internal successors, (4316), 3511 states have internal predecessors, (4316), 2065 states have call successors, (2065), 482 states have call predecessors, (2065), 479 states have return successors, (2063), 2002 states have call predecessors, (2063), 2061 states have call successors, (2063) [2022-11-23 13:52:31,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5878 states to 5878 states and 8444 transitions. [2022-11-23 13:52:31,447 INFO L78 Accepts]: Start accepts. Automaton has 5878 states and 8444 transitions. Word has length 169 [2022-11-23 13:52:31,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:52:31,449 INFO L495 AbstractCegarLoop]: Abstraction has 5878 states and 8444 transitions. [2022-11-23 13:52:31,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 13:52:31,449 INFO L276 IsEmpty]: Start isEmpty. Operand 5878 states and 8444 transitions. [2022-11-23 13:52:31,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-23 13:52:31,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:31,456 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:52:31,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:52:31,456 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)] === [2022-11-23 13:52:31,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:31,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1923686432, now seen corresponding path program 1 times [2022-11-23 13:52:31,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:31,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765193006] [2022-11-23 13:52:31,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:31,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:33,839 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2022-11-23 13:52:33,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:52:33,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765193006] [2022-11-23 13:52:33,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765193006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:52:33,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:52:33,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:52:33,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332939773] [2022-11-23 13:52:33,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:52:33,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:52:33,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:52:33,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:52:33,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:52:33,847 INFO L87 Difference]: Start difference. First operand 5878 states and 8444 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-23 13:52:36,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:52:42,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:52:44,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:52:44,271 INFO L93 Difference]: Finished difference Result 16590 states and 23742 transitions. [2022-11-23 13:52:44,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:52:44,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 186 [2022-11-23 13:52:44,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:52:44,360 INFO L225 Difference]: With dead ends: 16590 [2022-11-23 13:52:44,361 INFO L226 Difference]: Without dead ends: 10741 [2022-11-23 13:52:44,567 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 [2022-11-23 13:52:44,568 INFO L413 NwaCegarLoop]: 2917 mSDtfsCounter, 1958 mSDsluCounter, 2005 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 29 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 4922 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-23 13:52:44,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1958 Valid, 4922 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 878 Invalid, 2 Unknown, 0 Unchecked, 9.8s Time] [2022-11-23 13:52:44,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10741 states. [2022-11-23 13:52:45,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10741 to 10636. [2022-11-23 13:52:45,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10636 states, 6035 states have (on average 1.2818558409279204) internal successors, (7736), 6357 states have internal predecessors, (7736), 3685 states have call successors, (3685), 918 states have call predecessors, (3685), 913 states have return successors, (3683), 3570 states have call predecessors, (3683), 3681 states have call successors, (3683) [2022-11-23 13:52:45,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10636 states to 10636 states and 15104 transitions. [2022-11-23 13:52:45,342 INFO L78 Accepts]: Start accepts. Automaton has 10636 states and 15104 transitions. Word has length 186 [2022-11-23 13:52:45,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:52:45,344 INFO L495 AbstractCegarLoop]: Abstraction has 10636 states and 15104 transitions. [2022-11-23 13:52:45,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-23 13:52:45,345 INFO L276 IsEmpty]: Start isEmpty. Operand 10636 states and 15104 transitions. [2022-11-23 13:52:45,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-23 13:52:45,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:45,352 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:52:45,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 13:52:45,352 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)] === [2022-11-23 13:52:45,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:45,354 INFO L85 PathProgramCache]: Analyzing trace with hash 571403285, now seen corresponding path program 1 times [2022-11-23 13:52:45,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:45,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351911015] [2022-11-23 13:52:45,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:45,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:49,942 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2022-11-23 13:52:49,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:52:49,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351911015] [2022-11-23 13:52:49,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351911015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:52:49,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:52:49,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 13:52:49,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562435783] [2022-11-23 13:52:49,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:52:49,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 13:52:49,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:52:49,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 13:52:49,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-23 13:52:49,946 INFO L87 Difference]: Start difference. First operand 10636 states and 15104 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-23 13:52:52,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:53:07,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:53:14,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:53:14,248 INFO L93 Difference]: Finished difference Result 27351 states and 38700 transitions. [2022-11-23 13:53:14,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:53:14,250 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 181 [2022-11-23 13:53:14,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:53:14,420 INFO L225 Difference]: With dead ends: 27351 [2022-11-23 13:53:14,420 INFO L226 Difference]: Without dead ends: 16744 [2022-11-23 13:53:14,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-23 13:53:14,495 INFO L413 NwaCegarLoop]: 3324 mSDtfsCounter, 5578 mSDsluCounter, 5015 mSDsCounter, 0 mSdLazyCounter, 3484 mSolverCounterSat, 908 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5717 SdHoareTripleChecker+Valid, 8339 SdHoareTripleChecker+Invalid, 4393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 908 IncrementalHoareTripleChecker+Valid, 3484 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:53:14,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5717 Valid, 8339 Invalid, 4393 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [908 Valid, 3484 Invalid, 1 Unknown, 0 Unchecked, 23.0s Time] [2022-11-23 13:53:14,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16744 states. [2022-11-23 13:53:15,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16744 to 16674. [2022-11-23 13:53:15,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16674 states, 9445 states have (on average 1.2734780307040763) internal successors, (12028), 9950 states have internal predecessors, (12028), 5714 states have call successors, (5714), 1525 states have call predecessors, (5714), 1512 states have return successors, (5713), 5504 states have call predecessors, (5713), 5710 states have call successors, (5713) [2022-11-23 13:53:15,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16674 states to 16674 states and 23455 transitions. [2022-11-23 13:53:15,908 INFO L78 Accepts]: Start accepts. Automaton has 16674 states and 23455 transitions. Word has length 181 [2022-11-23 13:53:15,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:53:15,909 INFO L495 AbstractCegarLoop]: Abstraction has 16674 states and 23455 transitions. [2022-11-23 13:53:15,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-23 13:53:15,909 INFO L276 IsEmpty]: Start isEmpty. Operand 16674 states and 23455 transitions. [2022-11-23 13:53:15,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-23 13:53:15,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:53:15,918 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:53:15,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 13:53:15,919 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)] === [2022-11-23 13:53:15,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:53:15,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1376607584, now seen corresponding path program 1 times [2022-11-23 13:53:15,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:53:15,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613994514] [2022-11-23 13:53:15,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:53:15,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:53:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:53:18,056 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2022-11-23 13:53:18,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:53:18,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613994514] [2022-11-23 13:53:18,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613994514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:53:18,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:53:18,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:53:18,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608616987] [2022-11-23 13:53:18,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:53:18,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:53:18,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:53:18,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:53:18,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:53:18,059 INFO L87 Difference]: Start difference. First operand 16674 states and 23455 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-23 13:53:20,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:53:25,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:53:28,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:53:28,002 INFO L93 Difference]: Finished difference Result 46158 states and 64982 transitions. [2022-11-23 13:53:28,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:53:28,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 206 [2022-11-23 13:53:28,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:53:28,187 INFO L225 Difference]: With dead ends: 46158 [2022-11-23 13:53:28,188 INFO L226 Difference]: Without dead ends: 29513 [2022-11-23 13:53:28,261 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 [2022-11-23 13:53:28,263 INFO L413 NwaCegarLoop]: 2929 mSDtfsCounter, 2271 mSDsluCounter, 2033 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 4962 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-23 13:53:28,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2271 Valid, 4962 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 812 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-11-23 13:53:28,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29513 states. [2022-11-23 13:53:30,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29513 to 29464. [2022-11-23 13:53:30,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29464 states, 16709 states have (on average 1.2703932012687773) internal successors, (21227), 17638 states have internal predecessors, (21227), 10077 states have call successors, (10077), 2700 states have call predecessors, (10077), 2675 states have return successors, (10079), 9679 states have call predecessors, (10079), 10073 states have call successors, (10079) [2022-11-23 13:53:30,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29464 states to 29464 states and 41383 transitions. [2022-11-23 13:53:30,779 INFO L78 Accepts]: Start accepts. Automaton has 29464 states and 41383 transitions. Word has length 206 [2022-11-23 13:53:30,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:53:30,780 INFO L495 AbstractCegarLoop]: Abstraction has 29464 states and 41383 transitions. [2022-11-23 13:53:30,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-23 13:53:30,781 INFO L276 IsEmpty]: Start isEmpty. Operand 29464 states and 41383 transitions. [2022-11-23 13:53:30,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-23 13:53:30,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:53:30,787 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:53:30,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 13:53:30,787 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)] === [2022-11-23 13:53:30,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:53:30,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1387509761, now seen corresponding path program 1 times [2022-11-23 13:53:30,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:53:30,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129549347] [2022-11-23 13:53:30,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:53:30,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:53:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:53:34,677 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-23 13:53:34,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:53:34,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129549347] [2022-11-23 13:53:34,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129549347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:53:34,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:53:34,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 13:53:34,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596007441] [2022-11-23 13:53:34,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:53:34,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:53:34,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:53:34,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:53:34,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:53:34,680 INFO L87 Difference]: Start difference. First operand 29464 states and 41383 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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) [2022-11-23 13:53:36,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:53:43,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:53:46,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:53:46,147 INFO L93 Difference]: Finished difference Result 29784 states and 41701 transitions. [2022-11-23 13:53:46,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:53:46,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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 208 [2022-11-23 13:53:46,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:53:46,326 INFO L225 Difference]: With dead ends: 29784 [2022-11-23 13:53:46,326 INFO L226 Difference]: Without dead ends: 29782 [2022-11-23 13:53:46,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 13:53:46,347 INFO L413 NwaCegarLoop]: 2059 mSDtfsCounter, 2334 mSDsluCounter, 4136 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2345 SdHoareTripleChecker+Valid, 6195 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-23 13:53:46,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2345 Valid, 6195 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1067 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-11-23 13:53:46,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29782 states. [2022-11-23 13:53:48,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29782 to 29780. [2022-11-23 13:53:48,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29780 states, 16892 states have (on average 1.2695950745915225) internal successors, (21446), 17845 states have internal predecessors, (21446), 10125 states have call successors, (10125), 2785 states have call predecessors, (10125), 2760 states have return successors, (10127), 9727 states have call predecessors, (10127), 10121 states have call successors, (10127) [2022-11-23 13:53:48,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29780 states to 29780 states and 41698 transitions. [2022-11-23 13:53:48,956 INFO L78 Accepts]: Start accepts. Automaton has 29780 states and 41698 transitions. Word has length 208 [2022-11-23 13:53:48,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:53:48,958 INFO L495 AbstractCegarLoop]: Abstraction has 29780 states and 41698 transitions. [2022-11-23 13:53:48,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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) [2022-11-23 13:53:48,958 INFO L276 IsEmpty]: Start isEmpty. Operand 29780 states and 41698 transitions. [2022-11-23 13:53:49,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-23 13:53:49,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:53:49,174 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:53:49,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 13:53:49,175 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)] === [2022-11-23 13:53:49,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:53:49,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1714908220, now seen corresponding path program 1 times [2022-11-23 13:53:49,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:53:49,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025255480] [2022-11-23 13:53:49,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:53:49,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:53:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:53:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-23 13:53:52,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:53:52,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025255480] [2022-11-23 13:53:52,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025255480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:53:52,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:53:52,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 13:53:52,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575071700] [2022-11-23 13:53:52,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:53:52,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:53:52,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:53:52,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:53:52,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:53:52,940 INFO L87 Difference]: Start difference. First operand 29780 states and 41698 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-23 13:53:55,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:54:03,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:54:03,043 INFO L93 Difference]: Finished difference Result 29786 states and 41703 transitions. [2022-11-23 13:54:03,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:54:03,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) Word has length 213 [2022-11-23 13:54:03,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:54:03,209 INFO L225 Difference]: With dead ends: 29786 [2022-11-23 13:54:03,209 INFO L226 Difference]: Without dead ends: 29784 [2022-11-23 13:54:03,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 13:54:03,226 INFO L413 NwaCegarLoop]: 2058 mSDtfsCounter, 2341 mSDsluCounter, 4097 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2351 SdHoareTripleChecker+Valid, 6155 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-23 13:54:03,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2351 Valid, 6155 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1060 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-11-23 13:54:03,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29784 states. [2022-11-23 13:54:05,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29784 to 29784. [2022-11-23 13:54:05,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29784 states, 16895 states have (on average 1.26954720331459) internal successors, (21449), 17848 states have internal predecessors, (21449), 10125 states have call successors, (10125), 2786 states have call predecessors, (10125), 2761 states have return successors, (10127), 9727 states have call predecessors, (10127), 10121 states have call successors, (10127) [2022-11-23 13:54:05,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29784 states to 29784 states and 41701 transitions. [2022-11-23 13:54:05,611 INFO L78 Accepts]: Start accepts. Automaton has 29784 states and 41701 transitions. Word has length 213 [2022-11-23 13:54:05,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:54:05,613 INFO L495 AbstractCegarLoop]: Abstraction has 29784 states and 41701 transitions. [2022-11-23 13:54:05,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-23 13:54:05,613 INFO L276 IsEmpty]: Start isEmpty. Operand 29784 states and 41701 transitions. [2022-11-23 13:54:05,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-23 13:54:05,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:54:05,622 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:54:05,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 13:54:05,623 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)] === [2022-11-23 13:54:05,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:54:05,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1378299867, now seen corresponding path program 1 times [2022-11-23 13:54:05,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:54:05,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289414647] [2022-11-23 13:54:05,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:54:05,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:54:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:54:09,415 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2022-11-23 13:54:09,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:54:09,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289414647] [2022-11-23 13:54:09,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289414647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:54:09,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:54:09,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 13:54:09,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688074552] [2022-11-23 13:54:09,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:54:09,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:54:09,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:54:09,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:54:09,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:54:09,419 INFO L87 Difference]: Start difference. First operand 29784 states and 41701 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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) [2022-11-23 13:54:11,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:54:17,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:54:19,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:54:21,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:54:21,061 INFO L93 Difference]: Finished difference Result 29790 states and 41706 transitions. [2022-11-23 13:54:21,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:54:21,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 217 [2022-11-23 13:54:21,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:54:21,235 INFO L225 Difference]: With dead ends: 29790 [2022-11-23 13:54:21,235 INFO L226 Difference]: Without dead ends: 29788 [2022-11-23 13:54:21,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 13:54:21,254 INFO L413 NwaCegarLoop]: 2058 mSDtfsCounter, 2342 mSDsluCounter, 4097 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2351 SdHoareTripleChecker+Valid, 6155 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-23 13:54:21,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2351 Valid, 6155 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1060 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2022-11-23 13:54:21,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29788 states. [2022-11-23 13:54:23,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29788 to 29788. [2022-11-23 13:54:23,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29788 states, 16898 states have (on average 1.2694993490353887) internal successors, (21452), 17851 states have internal predecessors, (21452), 10125 states have call successors, (10125), 2787 states have call predecessors, (10125), 2762 states have return successors, (10127), 9727 states have call predecessors, (10127), 10121 states have call successors, (10127) [2022-11-23 13:54:23,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29788 states to 29788 states and 41704 transitions. [2022-11-23 13:54:23,800 INFO L78 Accepts]: Start accepts. Automaton has 29788 states and 41704 transitions. Word has length 217 [2022-11-23 13:54:23,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:54:23,801 INFO L495 AbstractCegarLoop]: Abstraction has 29788 states and 41704 transitions. [2022-11-23 13:54:23,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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) [2022-11-23 13:54:23,802 INFO L276 IsEmpty]: Start isEmpty. Operand 29788 states and 41704 transitions. [2022-11-23 13:54:23,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-23 13:54:23,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:54:23,822 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:54:23,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 13:54:23,823 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)] === [2022-11-23 13:54:23,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:54:23,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1919163292, now seen corresponding path program 1 times [2022-11-23 13:54:23,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:54:23,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333570533] [2022-11-23 13:54:23,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:54:23,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:54:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:54:26,953 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 898 trivial. 0 not checked. [2022-11-23 13:54:26,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:54:26,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333570533] [2022-11-23 13:54:26,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333570533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:54:26,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:54:26,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 13:54:26,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117068109] [2022-11-23 13:54:26,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:54:26,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:54:26,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:54:26,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:54:26,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:54:26,957 INFO L87 Difference]: Start difference. First operand 29788 states and 41704 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-23 13:54:29,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:54:37,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:54:37,415 INFO L93 Difference]: Finished difference Result 29794 states and 41709 transitions. [2022-11-23 13:54:37,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:54:37,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 223 [2022-11-23 13:54:37,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:54:37,549 INFO L225 Difference]: With dead ends: 29794 [2022-11-23 13:54:37,550 INFO L226 Difference]: Without dead ends: 29792 [2022-11-23 13:54:37,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 13:54:37,568 INFO L413 NwaCegarLoop]: 2058 mSDtfsCounter, 2341 mSDsluCounter, 4097 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2349 SdHoareTripleChecker+Valid, 6155 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-23 13:54:37,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2349 Valid, 6155 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1060 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-11-23 13:54:37,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29792 states. [2022-11-23 13:54:39,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29792 to 29792. [2022-11-23 13:54:39,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29792 states, 16901 states have (on average 1.2694515117448673) internal successors, (21455), 17854 states have internal predecessors, (21455), 10125 states have call successors, (10125), 2788 states have call predecessors, (10125), 2763 states have return successors, (10127), 9727 states have call predecessors, (10127), 10121 states have call successors, (10127) [2022-11-23 13:54:40,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29792 states to 29792 states and 41707 transitions. [2022-11-23 13:54:40,065 INFO L78 Accepts]: Start accepts. Automaton has 29792 states and 41707 transitions. Word has length 223 [2022-11-23 13:54:40,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:54:40,066 INFO L495 AbstractCegarLoop]: Abstraction has 29792 states and 41707 transitions. [2022-11-23 13:54:40,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-23 13:54:40,067 INFO L276 IsEmpty]: Start isEmpty. Operand 29792 states and 41707 transitions. [2022-11-23 13:54:40,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-11-23 13:54:40,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:54:40,078 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:54:40,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 13:54:40,078 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)] === [2022-11-23 13:54:40,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:54:40,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1221826629, now seen corresponding path program 1 times [2022-11-23 13:54:40,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:54:40,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553948668] [2022-11-23 13:54:40,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:54:40,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:54:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:54:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 905 trivial. 0 not checked. [2022-11-23 13:54:43,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:54:43,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553948668] [2022-11-23 13:54:43,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553948668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:54:43,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:54:43,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 13:54:43,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974312931] [2022-11-23 13:54:43,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:54:43,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:54:43,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:54:43,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:54:43,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:54:43,665 INFO L87 Difference]: Start difference. First operand 29792 states and 41707 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-23 13:54:45,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:54:52,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:54:54,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:54:54,844 INFO L93 Difference]: Finished difference Result 29798 states and 41712 transitions. [2022-11-23 13:54:54,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:54:54,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 227 [2022-11-23 13:54:54,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:54:54,947 INFO L225 Difference]: With dead ends: 29798 [2022-11-23 13:54:54,947 INFO L226 Difference]: Without dead ends: 29796 [2022-11-23 13:54:54,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 13:54:54,961 INFO L413 NwaCegarLoop]: 2058 mSDtfsCounter, 2342 mSDsluCounter, 4097 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2349 SdHoareTripleChecker+Valid, 6155 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-23 13:54:54,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2349 Valid, 6155 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1060 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-11-23 13:54:54,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29796 states. [2022-11-23 13:54:57,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29796 to 29796. [2022-11-23 13:54:57,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29796 states, 16904 states have (on average 1.2694036914339801) internal successors, (21458), 17857 states have internal predecessors, (21458), 10125 states have call successors, (10125), 2789 states have call predecessors, (10125), 2764 states have return successors, (10127), 9727 states have call predecessors, (10127), 10121 states have call successors, (10127) [2022-11-23 13:54:57,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29796 states to 29796 states and 41710 transitions. [2022-11-23 13:54:57,755 INFO L78 Accepts]: Start accepts. Automaton has 29796 states and 41710 transitions. Word has length 227 [2022-11-23 13:54:57,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:54:57,756 INFO L495 AbstractCegarLoop]: Abstraction has 29796 states and 41710 transitions. [2022-11-23 13:54:57,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-23 13:54:57,756 INFO L276 IsEmpty]: Start isEmpty. Operand 29796 states and 41710 transitions. [2022-11-23 13:54:57,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-23 13:54:57,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:54:57,765 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:54:57,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 13:54:57,766 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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)] === [2022-11-23 13:54:57,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:54:57,766 INFO L85 PathProgramCache]: Analyzing trace with hash 195513207, now seen corresponding path program 1 times [2022-11-23 13:54:57,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:54:57,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496828549] [2022-11-23 13:54:57,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:54:57,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:54:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:54:59,631 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2022-11-23 13:54:59,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:54:59,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496828549] [2022-11-23 13:54:59,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496828549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:54:59,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:54:59,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:54:59,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663692813] [2022-11-23 13:54:59,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:54:59,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:54:59,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:54:59,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:54:59,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:54:59,634 INFO L87 Difference]: Start difference. First operand 29796 states and 41710 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-23 13:55:01,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:08,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:11,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:11,738 INFO L93 Difference]: Finished difference Result 85670 states and 119996 transitions. [2022-11-23 13:55:11,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:55:11,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 249 [2022-11-23 13:55:11,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:55:11,964 INFO L225 Difference]: With dead ends: 85670 [2022-11-23 13:55:11,964 INFO L226 Difference]: Without dead ends: 55903 [2022-11-23 13:55:12,059 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 [2022-11-23 13:55:12,059 INFO L413 NwaCegarLoop]: 2653 mSDtfsCounter, 2334 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2334 SdHoareTripleChecker+Valid, 4703 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:55:12,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2334 Valid, 4703 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 711 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2022-11-23 13:55:12,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55903 states. [2022-11-23 13:55:16,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55903 to 55810. [2022-11-23 13:55:16,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55810 states, 31769 states have (on average 1.270893008908055) internal successors, (40375), 33617 states have internal predecessors, (40375), 18875 states have call successors, (18875), 5212 states have call predecessors, (18875), 5163 states have return successors, (18883), 18064 states have call predecessors, (18883), 18871 states have call successors, (18883) [2022-11-23 13:55:16,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55810 states to 55810 states and 78133 transitions. [2022-11-23 13:55:16,729 INFO L78 Accepts]: Start accepts. Automaton has 55810 states and 78133 transitions. Word has length 249 [2022-11-23 13:55:16,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:55:16,730 INFO L495 AbstractCegarLoop]: Abstraction has 55810 states and 78133 transitions. [2022-11-23 13:55:16,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-23 13:55:16,731 INFO L276 IsEmpty]: Start isEmpty. Operand 55810 states and 78133 transitions. [2022-11-23 13:55:16,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-23 13:55:16,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:16,739 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:55:16,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 13:55:16,740 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)] === [2022-11-23 13:55:16,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:16,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1091789564, now seen corresponding path program 1 times [2022-11-23 13:55:16,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:16,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112420488] [2022-11-23 13:55:16,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:16,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat