./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_9a553c56-8097-4b51-adc0-99cd2ceddd4f/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a553c56-8097-4b51-adc0-99cd2ceddd4f/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a553c56-8097-4b51-adc0-99cd2ceddd4f/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a553c56-8097-4b51-adc0-99cd2ceddd4f/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a553c56-8097-4b51-adc0-99cd2ceddd4f/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a553c56-8097-4b51-adc0-99cd2ceddd4f/bin/utaipan-g80aRyZoba --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 3d612e3d3aaa54cbaaae78896c02f6ca9c3968df93584b0bde88897a60cfa04a --- 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-b5237d8 [2022-11-22 02:01:53,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:01:53,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:01:53,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:01:53,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:01:53,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:01:53,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:01:53,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:01:53,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:01:53,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:01:53,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:01:53,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:01:53,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:01:53,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:01:53,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:01:53,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:01:53,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:01:53,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:01:53,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:01:53,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:01:53,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:01:53,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:01:53,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:01:53,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:01:53,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:01:53,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:01:53,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:01:54,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:01:54,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:01:54,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:01:54,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:01:54,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:01:54,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:01:54,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:01:54,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:01:54,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:01:54,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:01:54,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:01:54,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:01:54,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:01:54,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:01:54,025 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a553c56-8097-4b51-adc0-99cd2ceddd4f/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:01:54,065 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:01:54,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:01:54,066 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:01:54,066 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:01:54,067 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:01:54,067 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:01:54,067 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:01:54,068 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:01:54,068 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:01:54,068 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:01:54,069 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:01:54,069 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:01:54,070 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:01:54,070 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:01:54,070 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:01:54,070 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:01:54,070 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:01:54,071 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:01:54,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:01:54,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:01:54,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:01:54,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:01:54,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:01:54,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:01:54,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:01:54,073 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:01:54,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:01:54,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:01:54,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:01:54,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:01:54,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:01:54,075 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:01:54,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:01:54,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:01:54,075 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:01:54,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:01:54,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:01:54,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:01:54,076 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_9a553c56-8097-4b51-adc0-99cd2ceddd4f/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a553c56-8097-4b51-adc0-99cd2ceddd4f/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d612e3d3aaa54cbaaae78896c02f6ca9c3968df93584b0bde88897a60cfa04a [2022-11-22 02:01:54,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:01:54,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:01:54,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:01:54,406 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:01:54,406 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:01:54,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a553c56-8097-4b51-adc0-99cd2ceddd4f/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2022-11-22 02:01:57,603 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:01:58,221 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:01:58,222 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a553c56-8097-4b51-adc0-99cd2ceddd4f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2022-11-22 02:01:58,273 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a553c56-8097-4b51-adc0-99cd2ceddd4f/bin/utaipan-g80aRyZoba/data/03522b163/6d3653204c014766bb61e71df81af083/FLAGc700a41ab [2022-11-22 02:01:58,289 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a553c56-8097-4b51-adc0-99cd2ceddd4f/bin/utaipan-g80aRyZoba/data/03522b163/6d3653204c014766bb61e71df81af083 [2022-11-22 02:01:58,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:01:58,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:01:58,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:01:58,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:01:58,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:01:58,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:01:58" (1/1) ... [2022-11-22 02:01:58,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54f67e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:01:58, skipping insertion in model container [2022-11-22 02:01:58,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:01:58" (1/1) ... [2022-11-22 02:01:58,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:01:58,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:02:01,283 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_9a553c56-8097-4b51-adc0-99cd2ceddd4f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319618,319631] [2022-11-22 02:02:01,287 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_9a553c56-8097-4b51-adc0-99cd2ceddd4f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319787,319800] [2022-11-22 02:02:01,287 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_9a553c56-8097-4b51-adc0-99cd2ceddd4f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319954,319967] [2022-11-22 02:02:01,288 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_9a553c56-8097-4b51-adc0-99cd2ceddd4f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[320122,320135] [2022-11-22 02:02:01,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:02:01,390 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:02:01,686 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_9a553c56-8097-4b51-adc0-99cd2ceddd4f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319618,319631] [2022-11-22 02:02:01,687 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_9a553c56-8097-4b51-adc0-99cd2ceddd4f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319787,319800] [2022-11-22 02:02:01,688 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_9a553c56-8097-4b51-adc0-99cd2ceddd4f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319954,319967] [2022-11-22 02:02:01,688 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_9a553c56-8097-4b51-adc0-99cd2ceddd4f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[320122,320135] [2022-11-22 02:02:01,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:02:01,926 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:02:01,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:01 WrapperNode [2022-11-22 02:02:01,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:02:01,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:02:01,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:02:01,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:02:01,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:01" (1/1) ... [2022-11-22 02:02:02,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:01" (1/1) ... [2022-11-22 02:02:02,296 INFO L138 Inliner]: procedures = 434, calls = 1806, calls flagged for inlining = 214, calls inlined = 197, statements flattened = 4286 [2022-11-22 02:02:02,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:02:02,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:02:02,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:02:02,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:02:02,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:01" (1/1) ... [2022-11-22 02:02:02,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:01" (1/1) ... [2022-11-22 02:02:02,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:01" (1/1) ... [2022-11-22 02:02:02,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:01" (1/1) ... [2022-11-22 02:02:02,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:01" (1/1) ... [2022-11-22 02:02:02,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:01" (1/1) ... [2022-11-22 02:02:02,553 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:01" (1/1) ... [2022-11-22 02:02:02,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:01" (1/1) ... [2022-11-22 02:02:02,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:02:02,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:02:02,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:02:02,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:02:02,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:01" (1/1) ... [2022-11-22 02:02:02,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:02:02,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a553c56-8097-4b51-adc0-99cd2ceddd4f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:02:02,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a553c56-8097-4b51-adc0-99cd2ceddd4f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:02:02,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a553c56-8097-4b51-adc0-99cd2ceddd4f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:02:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure getlinkstatus [2022-11-22 02:02:02,712 INFO L138 BoogieDeclarations]: Found implementation of procedure getlinkstatus [2022-11-22 02:02:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-11-22 02:02:02,712 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-11-22 02:02:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-22 02:02:02,713 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-22 02:02:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 02:02:02,714 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 02:02:02,714 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-22 02:02:02,714 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-22 02:02:02,714 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 02:02:02,715 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 02:02:02,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 02:02:02,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 02:02:02,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 02:02:02,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 02:02:02,715 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 02:02:02,716 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 02:02:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_79 [2022-11-22 02:02:02,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_79 [2022-11-22 02:02:02,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_67 [2022-11-22 02:02:02,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_67 [2022-11-22 02:02:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-22 02:02:02,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-22 02:02:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 02:02:02,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 02:02:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 02:02:02,719 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 02:02:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-22 02:02:02,719 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-22 02:02:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure fealnx_tx_timeout [2022-11-22 02:02:02,720 INFO L138 BoogieDeclarations]: Found implementation of procedure fealnx_tx_timeout [2022-11-22 02:02:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 02:02:02,720 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 02:02:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 02:02:02,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 02:02:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 02:02:02,721 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 02:02:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure __set_rx_mode [2022-11-22 02:02:02,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_rx_mode [2022-11-22 02:02:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure getlinktype [2022-11-22 02:02:02,722 INFO L138 BoogieDeclarations]: Found implementation of procedure getlinktype [2022-11-22 02:02:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-22 02:02:02,723 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-22 02:02:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:02:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-22 02:02:02,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-22 02:02:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 02:02:02,724 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 02:02:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 02:02:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure reset_rx_descriptors [2022-11-22 02:02:02,724 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_rx_descriptors [2022-11-22 02:02:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 02:02:02,725 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 02:02:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure fealnx_remove_one [2022-11-22 02:02:02,725 INFO L138 BoogieDeclarations]: Found implementation of procedure fealnx_remove_one [2022-11-22 02:02:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 02:02:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 02:02:02,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 02:02:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:02:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-22 02:02:02,726 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-22 02:02:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 02:02:02,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 02:02:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 02:02:02,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 02:02:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 02:02:02,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 02:02:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 02:02:02,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 02:02:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 02:02:02,729 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 02:02:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 02:02:02,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 02:02:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:02:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 02:02:02,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 02:02:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 02:02:02,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 02:02:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:02:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2022-11-22 02:02:02,731 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2022-11-22 02:02:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 02:02:02,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 02:02:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 02:02:02,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 02:02:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:02:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:02:02,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:02:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 02:02:02,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 02:02:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-22 02:02:02,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-22 02:02:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-22 02:02:02,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-22 02:02:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 02:02:02,797 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 02:02:02,798 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-22 02:02:02,798 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-22 02:02:02,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 02:02:02,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 02:02:02,798 INFO L130 BoogieDeclarations]: Found specification of procedure stop_nic_rx [2022-11-22 02:02:02,798 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_nic_rx [2022-11-22 02:02:02,798 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-22 02:02:02,798 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-22 02:02:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:02:02,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:02:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 02:02:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 02:02:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 02:02:02,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 02:02:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_close [2022-11-22 02:02:02,799 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_close [2022-11-22 02:02:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 02:02:02,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 02:02:02,800 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 02:02:02,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 02:02:02,800 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_netdev_private [2022-11-22 02:02:02,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_netdev_private [2022-11-22 02:02:02,800 INFO L130 BoogieDeclarations]: Found specification of procedure enable_rxtx [2022-11-22 02:02:02,800 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_rxtx [2022-11-22 02:02:02,800 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-22 02:02:02,800 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-22 02:02:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 02:02:02,801 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 02:02:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 02:02:02,801 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 02:02:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-22 02:02:02,801 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-22 02:02:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_78 [2022-11-22 02:02:02,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_78 [2022-11-22 02:02:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 02:02:02,802 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 02:02:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-22 02:02:02,802 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-22 02:02:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:02:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure reset_and_disable_rxtx [2022-11-22 02:02:02,802 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_and_disable_rxtx [2022-11-22 02:02:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 02:02:02,802 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 02:02:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:02:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-22 02:02:02,805 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-22 02:02:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:02:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 02:02:02,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 02:02:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 02:02:02,806 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 02:02:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_netdev_private [2022-11-22 02:02:02,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_netdev_private [2022-11-22 02:02:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 02:02:02,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 02:02:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_open [2022-11-22 02:02:02,807 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_open [2022-11-22 02:02:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 02:02:02,807 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 02:02:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 02:02:02,808 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 02:02:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-22 02:02:02,809 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-22 02:02:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure stop_nic_rxtx [2022-11-22 02:02:02,809 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_nic_rxtx [2022-11-22 02:02:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure m80x_send_cmd_to_phy [2022-11-22 02:02:02,809 INFO L138 BoogieDeclarations]: Found implementation of procedure m80x_send_cmd_to_phy [2022-11-22 02:02:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:02:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_rx_buffers [2022-11-22 02:02:02,810 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_rx_buffers [2022-11-22 02:02:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 02:02:02,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 02:02:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 02:02:02,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 02:02:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-22 02:02:02,811 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-22 02:02:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-22 02:02:02,811 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-22 02:02:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:02:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 02:02:02,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 02:02:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fealnx_exit_14_2 [2022-11-22 02:02:02,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fealnx_exit_14_2 [2022-11-22 02:02:03,816 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:02:03,822 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:02:04,801 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 02:02:07,487 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 02:02:07,575 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:02:09,046 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:02:09,047 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:02:09,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:02:09 BoogieIcfgContainer [2022-11-22 02:02:09,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:02:09,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:02:09,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:02:09,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:02:09,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:01:58" (1/3) ... [2022-11-22 02:02:09,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193975e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:02:09, skipping insertion in model container [2022-11-22 02:02:09,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:01" (2/3) ... [2022-11-22 02:02:09,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193975e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:02:09, skipping insertion in model container [2022-11-22 02:02:09,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:02:09" (3/3) ... [2022-11-22 02:02:09,061 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2022-11-22 02:02:09,082 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:02:09,083 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 02:02:09,159 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:02:09,167 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;@7c932d6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:02:09,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 02:02:09,177 INFO L276 IsEmpty]: Start isEmpty. Operand has 1124 states, 651 states have (on average 1.2995391705069124) internal successors, (846), 672 states have internal predecessors, (846), 389 states have call successors, (389), 82 states have call predecessors, (389), 81 states have return successors, (383), 380 states have call predecessors, (383), 383 states have call successors, (383) [2022-11-22 02:02:09,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-22 02:02:09,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:02:09,197 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:02:09,197 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)] === [2022-11-22 02:02:09,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:02:09,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1327707064, now seen corresponding path program 1 times [2022-11-22 02:02:09,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:02:09,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807443599] [2022-11-22 02:02:09,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:02:09,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:02:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:02:09,996 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-22 02:02:09,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:02:09,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807443599] [2022-11-22 02:02:09,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807443599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:02:09,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:02:09,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:02:10,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630957142] [2022-11-22 02:02:10,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:02:10,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:02:10,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:02:10,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:02:10,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:02:10,066 INFO L87 Difference]: Start difference. First operand has 1124 states, 651 states have (on average 1.2995391705069124) internal successors, (846), 672 states have internal predecessors, (846), 389 states have call successors, (389), 82 states have call predecessors, (389), 81 states have return successors, (383), 380 states have call predecessors, (383), 383 states have call successors, (383) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 02:02:12,781 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 [] [2022-11-22 02:02:14,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:02:14,762 INFO L93 Difference]: Finished difference Result 3257 states and 4760 transitions. [2022-11-22 02:02:14,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:02:14,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2022-11-22 02:02:14,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:02:14,799 INFO L225 Difference]: With dead ends: 3257 [2022-11-22 02:02:14,800 INFO L226 Difference]: Without dead ends: 2142 [2022-11-22 02:02:14,809 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 [2022-11-22 02:02:14,813 INFO L413 NwaCegarLoop]: 1717 mSDtfsCounter, 1495 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:02:14,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 3046 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 513 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-22 02:02:14,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2022-11-22 02:02:15,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2138. [2022-11-22 02:02:15,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2138 states, 1254 states have (on average 1.2926634768740033) internal successors, (1621), 1295 states have internal predecessors, (1621), 723 states have call successors, (723), 159 states have call predecessors, (723), 158 states have return successors, (719), 713 states have call predecessors, (719), 719 states have call successors, (719) [2022-11-22 02:02:15,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 3063 transitions. [2022-11-22 02:02:15,070 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 3063 transitions. Word has length 111 [2022-11-22 02:02:15,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:02:15,071 INFO L495 AbstractCegarLoop]: Abstraction has 2138 states and 3063 transitions. [2022-11-22 02:02:15,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 02:02:15,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 3063 transitions. [2022-11-22 02:02:15,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-22 02:02:15,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:02:15,076 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:02:15,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:02:15,077 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)] === [2022-11-22 02:02:15,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:02:15,078 INFO L85 PathProgramCache]: Analyzing trace with hash 501969323, now seen corresponding path program 1 times [2022-11-22 02:02:15,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:02:15,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033984166] [2022-11-22 02:02:15,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:02:15,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:02:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:02:15,503 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-22 02:02:15,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:02:15,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033984166] [2022-11-22 02:02:15,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033984166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:02:15,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:02:15,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:02:15,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256625199] [2022-11-22 02:02:15,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:02:15,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:02:15,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:02:15,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:02:15,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:02:15,508 INFO L87 Difference]: Start difference. First operand 2138 states and 3063 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-22 02:02:18,981 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 [] [2022-11-22 02:02:20,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:02:20,444 INFO L93 Difference]: Finished difference Result 6046 states and 8650 transitions. [2022-11-22 02:02:20,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:02:20,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2022-11-22 02:02:20,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:02:20,480 INFO L225 Difference]: With dead ends: 6046 [2022-11-22 02:02:20,481 INFO L226 Difference]: Without dead ends: 3927 [2022-11-22 02:02:20,498 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 [2022-11-22 02:02:20,499 INFO L413 NwaCegarLoop]: 1712 mSDtfsCounter, 1347 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 3021 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:02:20,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1347 Valid, 3021 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 505 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-11-22 02:02:20,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2022-11-22 02:02:20,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 3897. [2022-11-22 02:02:20,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3897 states, 2281 states have (on average 1.288908373520386) internal successors, (2940), 2357 states have internal predecessors, (2940), 1308 states have call successors, (1308), 308 states have call predecessors, (1308), 305 states have return successors, (1322), 1281 states have call predecessors, (1322), 1304 states have call successors, (1322) [2022-11-22 02:02:20,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 5570 transitions. [2022-11-22 02:02:20,824 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 5570 transitions. Word has length 113 [2022-11-22 02:02:20,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:02:20,825 INFO L495 AbstractCegarLoop]: Abstraction has 3897 states and 5570 transitions. [2022-11-22 02:02:20,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-22 02:02:20,826 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 5570 transitions. [2022-11-22 02:02:20,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-22 02:02:20,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:02:20,828 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:02:20,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:02:20,829 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)] === [2022-11-22 02:02:20,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:02:20,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1187338811, now seen corresponding path program 1 times [2022-11-22 02:02:20,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:02:20,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123983033] [2022-11-22 02:02:20,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:02:20,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:02:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:02:21,107 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-22 02:02:21,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:02:21,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123983033] [2022-11-22 02:02:21,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123983033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:02:21,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:02:21,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:02:21,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120168692] [2022-11-22 02:02:21,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:02:21,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:02:21,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:02:21,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:02:21,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:02:21,113 INFO L87 Difference]: Start difference. First operand 3897 states and 5570 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-22 02:02:25,656 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 [] [2022-11-22 02:02:26,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:02:26,502 INFO L93 Difference]: Finished difference Result 11379 states and 16255 transitions. [2022-11-22 02:02:26,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:02:26,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2022-11-22 02:02:26,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:02:26,556 INFO L225 Difference]: With dead ends: 11379 [2022-11-22 02:02:26,556 INFO L226 Difference]: Without dead ends: 7501 [2022-11-22 02:02:26,576 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 [2022-11-22 02:02:26,581 INFO L413 NwaCegarLoop]: 1919 mSDtfsCounter, 1487 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:02:26,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 3220 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 536 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-22 02:02:26,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7501 states. [2022-11-22 02:02:26,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7501 to 7467. [2022-11-22 02:02:27,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7467 states, 4391 states have (on average 1.2917330904122069) internal successors, (5672), 4547 states have internal predecessors, (5672), 2476 states have call successors, (2476), 608 states have call predecessors, (2476), 597 states have return successors, (2518), 2409 states have call predecessors, (2518), 2472 states have call successors, (2518) [2022-11-22 02:02:27,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7467 states to 7467 states and 10666 transitions. [2022-11-22 02:02:27,171 INFO L78 Accepts]: Start accepts. Automaton has 7467 states and 10666 transitions. Word has length 116 [2022-11-22 02:02:27,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:02:27,172 INFO L495 AbstractCegarLoop]: Abstraction has 7467 states and 10666 transitions. [2022-11-22 02:02:27,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-22 02:02:27,189 INFO L276 IsEmpty]: Start isEmpty. Operand 7467 states and 10666 transitions. [2022-11-22 02:02:27,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-22 02:02:27,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:02:27,192 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:02:27,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:02:27,192 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)] === [2022-11-22 02:02:27,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:02:27,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1069193634, now seen corresponding path program 1 times [2022-11-22 02:02:27,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:02:27,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877936855] [2022-11-22 02:02:27,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:02:27,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:02:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:02:27,831 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-22 02:02:27,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:02:27,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877936855] [2022-11-22 02:02:27,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877936855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:02:27,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:02:27,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:02:27,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446518368] [2022-11-22 02:02:27,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:02:27,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:02:27,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:02:27,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:02:27,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:02:27,837 INFO L87 Difference]: Start difference. First operand 7467 states and 10666 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 02:02:34,456 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 [] [2022-11-22 02:02:36,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:02:36,900 INFO L93 Difference]: Finished difference Result 17258 states and 24528 transitions. [2022-11-22 02:02:36,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:02:36,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2022-11-22 02:02:36,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:02:36,955 INFO L225 Difference]: With dead ends: 17258 [2022-11-22 02:02:36,956 INFO L226 Difference]: Without dead ends: 9810 [2022-11-22 02:02:36,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:02:36,987 INFO L413 NwaCegarLoop]: 2065 mSDtfsCounter, 4441 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 2137 mSolverCounterSat, 1571 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4555 SdHoareTripleChecker+Valid, 4319 SdHoareTripleChecker+Invalid, 3709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1571 IncrementalHoareTripleChecker+Valid, 2137 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:02:36,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4555 Valid, 4319 Invalid, 3709 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1571 Valid, 2137 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-11-22 02:02:36,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9810 states. [2022-11-22 02:02:37,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9810 to 9624. [2022-11-22 02:02:37,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9624 states, 5694 states have (on average 1.2859149982437654) internal successors, (7322), 5890 states have internal predecessors, (7322), 3090 states have call successors, (3090), 856 states have call predecessors, (3090), 837 states have return successors, (3109), 2997 states have call predecessors, (3109), 3086 states have call successors, (3109) [2022-11-22 02:02:37,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9624 states to 9624 states and 13521 transitions. [2022-11-22 02:02:37,680 INFO L78 Accepts]: Start accepts. Automaton has 9624 states and 13521 transitions. Word has length 117 [2022-11-22 02:02:37,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:02:37,680 INFO L495 AbstractCegarLoop]: Abstraction has 9624 states and 13521 transitions. [2022-11-22 02:02:37,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 02:02:37,681 INFO L276 IsEmpty]: Start isEmpty. Operand 9624 states and 13521 transitions. [2022-11-22 02:02:37,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-22 02:02:37,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:02:37,682 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:02:37,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:02:37,683 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)] === [2022-11-22 02:02:37,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:02:37,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1026742871, now seen corresponding path program 1 times [2022-11-22 02:02:37,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:02:37,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013394950] [2022-11-22 02:02:37,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:02:37,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:02:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:02:37,866 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-22 02:02:37,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:02:37,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013394950] [2022-11-22 02:02:37,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013394950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:02:37,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:02:37,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:02:37,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695592726] [2022-11-22 02:02:37,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:02:37,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:02:37,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:02:37,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:02:37,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:02:37,870 INFO L87 Difference]: Start difference. First operand 9624 states and 13521 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 02:02:40,596 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 [] [2022-11-22 02:02:44,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:02:44,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:02:44,456 INFO L93 Difference]: Finished difference Result 25144 states and 35251 transitions. [2022-11-22 02:02:44,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:02:44,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2022-11-22 02:02:44,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:02:44,581 INFO L225 Difference]: With dead ends: 25144 [2022-11-22 02:02:44,581 INFO L226 Difference]: Without dead ends: 15539 [2022-11-22 02:02:44,624 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 [2022-11-22 02:02:44,627 INFO L413 NwaCegarLoop]: 1691 mSDtfsCounter, 1371 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:02:44,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1371 Valid, 2999 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 527 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-11-22 02:02:44,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15539 states. [2022-11-22 02:02:45,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15539 to 15507. [2022-11-22 02:02:45,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15507 states, 9153 states have (on average 1.272369714847591) internal successors, (11646), 9501 states have internal predecessors, (11646), 4978 states have call successors, (4978), 1410 states have call predecessors, (4978), 1373 states have return successors, (5023), 4788 states have call predecessors, (5023), 4974 states have call successors, (5023) [2022-11-22 02:02:45,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15507 states to 15507 states and 21647 transitions. [2022-11-22 02:02:45,766 INFO L78 Accepts]: Start accepts. Automaton has 15507 states and 21647 transitions. Word has length 117 [2022-11-22 02:02:45,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:02:45,768 INFO L495 AbstractCegarLoop]: Abstraction has 15507 states and 21647 transitions. [2022-11-22 02:02:45,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 02:02:45,768 INFO L276 IsEmpty]: Start isEmpty. Operand 15507 states and 21647 transitions. [2022-11-22 02:02:45,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-22 02:02:45,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:02:45,781 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 9, 9, 9, 9, 9, 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] [2022-11-22 02:02:45,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:02:45,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === 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)] === [2022-11-22 02:02:45,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:02:45,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1485103396, now seen corresponding path program 1 times [2022-11-22 02:02:45,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:02:45,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229887496] [2022-11-22 02:02:45,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:02:45,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:02:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:02:46,093 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-11-22 02:02:46,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:02:46,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229887496] [2022-11-22 02:02:46,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229887496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:02:46,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:02:46,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:02:46,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732723637] [2022-11-22 02:02:46,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:02:46,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:02:46,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:02:46,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:02:46,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:02:46,096 INFO L87 Difference]: Start difference. First operand 15507 states and 21647 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-22 02:02:49,161 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 [] [2022-11-22 02:02:52,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:02:52,234 INFO L93 Difference]: Finished difference Result 45703 states and 63856 transitions. [2022-11-22 02:02:52,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:02:52,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 134 [2022-11-22 02:02:52,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:02:52,402 INFO L225 Difference]: With dead ends: 45703 [2022-11-22 02:02:52,402 INFO L226 Difference]: Without dead ends: 30215 [2022-11-22 02:02:52,453 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 [2022-11-22 02:02:52,455 INFO L413 NwaCegarLoop]: 2006 mSDtfsCounter, 1545 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 3349 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:02:52,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 3349 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 573 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-22 02:02:52,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30215 states. [2022-11-22 02:02:54,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30215 to 30141. [2022-11-22 02:02:54,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30141 states, 17762 states have (on average 1.2726044364373381) internal successors, (22604), 18486 states have internal predecessors, (22604), 9703 states have call successors, (9703), 2746 states have call predecessors, (9703), 2673 states have return successors, (9797), 9290 states have call predecessors, (9797), 9699 states have call successors, (9797) [2022-11-22 02:02:54,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30141 states to 30141 states and 42104 transitions. [2022-11-22 02:02:54,619 INFO L78 Accepts]: Start accepts. Automaton has 30141 states and 42104 transitions. Word has length 134 [2022-11-22 02:02:54,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:02:54,619 INFO L495 AbstractCegarLoop]: Abstraction has 30141 states and 42104 transitions. [2022-11-22 02:02:54,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-22 02:02:54,620 INFO L276 IsEmpty]: Start isEmpty. Operand 30141 states and 42104 transitions. [2022-11-22 02:02:54,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-22 02:02:54,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:02:54,623 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 4, 4, 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] [2022-11-22 02:02:54,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:02:54,623 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)] === [2022-11-22 02:02:54,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:02:54,624 INFO L85 PathProgramCache]: Analyzing trace with hash -96468158, now seen corresponding path program 1 times [2022-11-22 02:02:54,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:02:54,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653703553] [2022-11-22 02:02:54,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:02:54,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:02:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:02:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-22 02:02:55,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:02:55,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653703553] [2022-11-22 02:02:55,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653703553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:02:55,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:02:55,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:02:55,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10775394] [2022-11-22 02:02:55,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:02:55,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:02:55,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:02:55,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:02:55,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:02:55,138 INFO L87 Difference]: Start difference. First operand 30141 states and 42104 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 02:02:58,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:03:02,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:03:05,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:03:05,312 INFO L93 Difference]: Finished difference Result 60221 states and 84130 transitions. [2022-11-22 02:03:05,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:03:05,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 153 [2022-11-22 02:03:05,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:03:05,628 INFO L225 Difference]: With dead ends: 60221 [2022-11-22 02:03:05,628 INFO L226 Difference]: Without dead ends: 60219 [2022-11-22 02:03:05,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:03:05,661 INFO L413 NwaCegarLoop]: 1814 mSDtfsCounter, 1542 mSDsluCounter, 4933 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 6747 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:03:05,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1554 Valid, 6747 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1160 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-22 02:03:05,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60219 states. [2022-11-22 02:03:09,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60219 to 60213. [2022-11-22 02:03:09,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60213 states, 35468 states have (on average 1.2728938761700688) internal successors, (45147), 36914 states have internal predecessors, (45147), 19395 states have call successors, (19395), 5493 states have call predecessors, (19395), 5347 states have return successors, (19583), 18569 states have call predecessors, (19583), 19387 states have call successors, (19583) [2022-11-22 02:03:09,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60213 states to 60213 states and 84125 transitions. [2022-11-22 02:03:09,636 INFO L78 Accepts]: Start accepts. Automaton has 60213 states and 84125 transitions. Word has length 153 [2022-11-22 02:03:09,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:03:09,637 INFO L495 AbstractCegarLoop]: Abstraction has 60213 states and 84125 transitions. [2022-11-22 02:03:09,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 02:03:09,638 INFO L276 IsEmpty]: Start isEmpty. Operand 60213 states and 84125 transitions. [2022-11-22 02:03:09,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-22 02:03:09,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:03:09,641 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2022-11-22 02:03:09,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:03:09,642 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)] === [2022-11-22 02:03:09,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:03:09,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1936901, now seen corresponding path program 1 times [2022-11-22 02:03:09,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:03:09,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612149949] [2022-11-22 02:03:09,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:03:09,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:03:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:03:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2022-11-22 02:03:10,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:03:10,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612149949] [2022-11-22 02:03:10,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612149949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:03:10,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:03:10,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:03:10,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752994632] [2022-11-22 02:03:10,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:03:10,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:03:10,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:03:10,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:03:10,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:03:10,107 INFO L87 Difference]: Start difference. First operand 60213 states and 84125 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 02:03:13,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:03:19,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:03:21,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:03:21,062 INFO L93 Difference]: Finished difference Result 60225 states and 84133 transitions. [2022-11-22 02:03:21,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:03:21,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 161 [2022-11-22 02:03:21,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:03:21,384 INFO L225 Difference]: With dead ends: 60225 [2022-11-22 02:03:21,385 INFO L226 Difference]: Without dead ends: 60223 [2022-11-22 02:03:21,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:03:21,416 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 1536 mSDsluCounter, 4933 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 6750 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:03:21,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 6750 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1160 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2022-11-22 02:03:21,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60223 states. [2022-11-22 02:03:25,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60223 to 60217. [2022-11-22 02:03:25,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60217 states, 35471 states have (on average 1.2728707958614078) internal successors, (45150), 36917 states have internal predecessors, (45150), 19395 states have call successors, (19395), 5494 states have call predecessors, (19395), 5348 states have return successors, (19583), 18569 states have call predecessors, (19583), 19387 states have call successors, (19583) [2022-11-22 02:03:25,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60217 states to 60217 states and 84128 transitions. [2022-11-22 02:03:25,472 INFO L78 Accepts]: Start accepts. Automaton has 60217 states and 84128 transitions. Word has length 161 [2022-11-22 02:03:25,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:03:25,473 INFO L495 AbstractCegarLoop]: Abstraction has 60217 states and 84128 transitions. [2022-11-22 02:03:25,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 02:03:25,474 INFO L276 IsEmpty]: Start isEmpty. Operand 60217 states and 84128 transitions. [2022-11-22 02:03:25,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-22 02:03:25,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:03:25,477 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:03:25,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:03:25,477 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)] === [2022-11-22 02:03:25,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:03:25,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1040267374, now seen corresponding path program 1 times [2022-11-22 02:03:25,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:03:25,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961423454] [2022-11-22 02:03:25,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:03:25,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:03:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:03:25,891 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2022-11-22 02:03:25,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:03:25,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961423454] [2022-11-22 02:03:25,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961423454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:03:25,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:03:25,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:03:25,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348236572] [2022-11-22 02:03:25,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:03:25,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:03:25,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:03:25,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:03:25,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:03:25,895 INFO L87 Difference]: Start difference. First operand 60217 states and 84128 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:03:29,650 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 [] [2022-11-22 02:03:35,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:03:35,657 INFO L93 Difference]: Finished difference Result 60229 states and 84136 transitions. [2022-11-22 02:03:35,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:03:35,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 166 [2022-11-22 02:03:35,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:03:35,953 INFO L225 Difference]: With dead ends: 60229 [2022-11-22 02:03:35,953 INFO L226 Difference]: Without dead ends: 60227 [2022-11-22 02:03:35,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:03:35,982 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 1536 mSDsluCounter, 4933 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 6750 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:03:35,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 6750 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1160 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-11-22 02:03:36,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60227 states. [2022-11-22 02:03:39,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60227 to 60221. [2022-11-22 02:03:39,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60221 states, 35474 states have (on average 1.2728477194565033) internal successors, (45153), 36920 states have internal predecessors, (45153), 19395 states have call successors, (19395), 5495 states have call predecessors, (19395), 5349 states have return successors, (19583), 18569 states have call predecessors, (19583), 19387 states have call successors, (19583) [2022-11-22 02:03:39,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60221 states to 60221 states and 84131 transitions. [2022-11-22 02:03:39,600 INFO L78 Accepts]: Start accepts. Automaton has 60221 states and 84131 transitions. Word has length 166 [2022-11-22 02:03:39,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:03:39,601 INFO L495 AbstractCegarLoop]: Abstraction has 60221 states and 84131 transitions. [2022-11-22 02:03:39,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:03:39,601 INFO L276 IsEmpty]: Start isEmpty. Operand 60221 states and 84131 transitions. [2022-11-22 02:03:39,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-22 02:03:39,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:03:39,605 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2022-11-22 02:03:39,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:03:39,605 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)] === [2022-11-22 02:03:39,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:03:39,606 INFO L85 PathProgramCache]: Analyzing trace with hash -15175653, now seen corresponding path program 1 times [2022-11-22 02:03:39,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:03:39,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754378017] [2022-11-22 02:03:39,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:03:39,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:03:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:03:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2022-11-22 02:03:40,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:03:40,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754378017] [2022-11-22 02:03:40,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754378017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:03:40,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:03:40,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:03:40,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246754402] [2022-11-22 02:03:40,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:03:40,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:03:40,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:03:40,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:03:40,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:03:40,394 INFO L87 Difference]: Start difference. First operand 60221 states and 84131 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 02:03:43,753 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 [] [2022-11-22 02:03:47,703 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 [] [2022-11-22 02:03:50,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:03:50,572 INFO L93 Difference]: Finished difference Result 90097 states and 125842 transitions. [2022-11-22 02:03:50,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:03:50,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 171 [2022-11-22 02:03:50,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:03:51,014 INFO L225 Difference]: With dead ends: 90097 [2022-11-22 02:03:51,014 INFO L226 Difference]: Without dead ends: 90095 [2022-11-22 02:03:51,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:03:51,061 INFO L413 NwaCegarLoop]: 1807 mSDtfsCounter, 1524 mSDsluCounter, 4913 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 6720 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:03:51,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 6720 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1150 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2022-11-22 02:03:51,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90095 states. [2022-11-22 02:03:56,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90095 to 90065. [2022-11-22 02:03:56,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90065 states, 53045 states have (on average 1.2731265906305966) internal successors, (67533), 55209 states have internal predecessors, (67533), 28999 states have call successors, (28999), 8237 states have call predecessors, (28999), 8018 states have return successors, (29281), 27736 states have call predecessors, (29281), 28987 states have call successors, (29281) [2022-11-22 02:03:57,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90065 states to 90065 states and 125813 transitions. [2022-11-22 02:03:57,690 INFO L78 Accepts]: Start accepts. Automaton has 90065 states and 125813 transitions. Word has length 171 [2022-11-22 02:03:57,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:03:57,707 INFO L495 AbstractCegarLoop]: Abstraction has 90065 states and 125813 transitions. [2022-11-22 02:03:57,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 02:03:57,708 INFO L276 IsEmpty]: Start isEmpty. Operand 90065 states and 125813 transitions. [2022-11-22 02:03:57,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-22 02:03:57,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:03:57,714 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 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] [2022-11-22 02:03:57,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:03:57,715 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:03:57,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:03:57,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1082420738, now seen corresponding path program 1 times [2022-11-22 02:03:57,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:03:57,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455572456] [2022-11-22 02:03:57,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:03:57,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:03:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:03:58,175 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 423 trivial. 0 not checked. [2022-11-22 02:03:58,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:03:58,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455572456] [2022-11-22 02:03:58,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455572456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:03:58,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:03:58,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:03:58,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552134817] [2022-11-22 02:03:58,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:03:58,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:03:58,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:03:58,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:03:58,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:03:58,179 INFO L87 Difference]: Start difference. First operand 90065 states and 125813 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:04:01,547 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 []