./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.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_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/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_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/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_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/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 eed79abab256f81f1863cfddb0c42a9b6564cf98ca16b371152af6fd281f627c --- 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 02:41:42,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:41:42,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:41:42,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:41:42,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:41:42,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:41:42,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:41:42,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:41:42,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:41:42,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:41:42,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:41:42,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:41:42,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:41:42,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:41:42,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:41:42,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:41:42,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:41:42,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:41:42,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:41:42,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:41:42,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:41:42,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:41:42,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:41:42,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:41:42,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:41:42,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:41:42,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:41:42,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:41:42,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:41:42,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:41:42,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:41:42,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:41:42,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:41:42,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:41:42,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:41:42,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:41:42,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:41:42,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:41:42,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:41:42,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:41:42,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:41:42,914 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:41:42,960 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:41:42,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:41:42,962 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:41:42,962 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:41:42,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:41:42,964 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:41:42,964 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:41:42,964 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:41:42,964 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:41:42,964 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:41:42,966 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:41:42,966 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:41:42,966 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:41:42,966 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:41:42,966 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:41:42,967 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:41:42,967 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:41:42,967 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:41:42,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:41:42,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:41:42,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:41:42,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:41:42,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:41:42,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:41:42,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:41:42,969 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:41:42,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:41:42,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:41:42,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:41:42,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:41:42,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:41:42,971 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:41:42,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:41:42,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:41:42,971 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:41:42,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:41:42,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:41:42,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:41:42,972 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_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eed79abab256f81f1863cfddb0c42a9b6564cf98ca16b371152af6fd281f627c [2022-11-22 02:41:43,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:41:43,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:41:43,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:41:43,269 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:41:43,270 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:41:43,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2022-11-22 02:41:46,364 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:41:47,186 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:41:47,187 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2022-11-22 02:41:47,259 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/bin/utaipan-g80aRyZoba/data/1b72abc44/7da9d6f17d684e8aa1c6654ce3653c9a/FLAG9d8e3dbab [2022-11-22 02:41:47,279 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/bin/utaipan-g80aRyZoba/data/1b72abc44/7da9d6f17d684e8aa1c6654ce3653c9a [2022-11-22 02:41:47,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:41:47,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:41:47,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:41:47,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:41:47,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:41:47,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:41:47" (1/1) ... [2022-11-22 02:41:47,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dd5eb4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:47, skipping insertion in model container [2022-11-22 02:41:47,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:41:47" (1/1) ... [2022-11-22 02:41:47,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:41:47,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:41:51,733 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_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[462950,462963] [2022-11-22 02:41:51,737 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_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[463119,463132] [2022-11-22 02:41:51,738 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_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[463286,463299] [2022-11-22 02:41:51,739 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_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[463454,463467] [2022-11-22 02:41:51,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:41:51,832 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:41:52,459 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_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[462950,462963] [2022-11-22 02:41:52,459 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_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[463119,463132] [2022-11-22 02:41:52,460 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_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[463286,463299] [2022-11-22 02:41:52,460 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_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[463454,463467] [2022-11-22 02:41:52,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:41:52,792 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:41:52,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:52 WrapperNode [2022-11-22 02:41:52,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:41:52,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:41:52,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:41:52,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:41:52,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:52" (1/1) ... [2022-11-22 02:41:52,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:52" (1/1) ... [2022-11-22 02:41:53,305 INFO L138 Inliner]: procedures = 566, calls = 4397, calls flagged for inlining = 270, calls inlined = 248, statements flattened = 9112 [2022-11-22 02:41:53,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:41:53,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:41:53,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:41:53,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:41:53,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:52" (1/1) ... [2022-11-22 02:41:53,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:52" (1/1) ... [2022-11-22 02:41:53,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:52" (1/1) ... [2022-11-22 02:41:53,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:52" (1/1) ... [2022-11-22 02:41:53,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:52" (1/1) ... [2022-11-22 02:41:53,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:52" (1/1) ... [2022-11-22 02:41:53,633 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:52" (1/1) ... [2022-11-22 02:41:53,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:52" (1/1) ... [2022-11-22 02:41:53,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:41:53,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:41:53,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:41:53,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:41:53,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:52" (1/1) ... [2022-11-22 02:41:53,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:41:53,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:41:53,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:41:53,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5b412f-0d4b-4c4f-a9c8-85bc61a942c4/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:41:53,775 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-22 02:41:53,775 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-22 02:41:53,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 02:41:53,775 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 02:41:53,776 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-22 02:41:53,776 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-22 02:41:53,776 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-11-22 02:41:53,776 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-11-22 02:41:53,776 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_nway_reset [2022-11-22 02:41:53,776 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_nway_reset [2022-11-22 02:41:53,776 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 02:41:53,777 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 02:41:53,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_87 [2022-11-22 02:41:53,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_87 [2022-11-22 02:41:53,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 02:41:53,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 02:41:53,777 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-22 02:41:53,778 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-22 02:41:53,778 INFO L130 BoogieDeclarations]: Found specification of procedure set_8021q_mode [2022-11-22 02:41:53,779 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8021q_mode [2022-11-22 02:41:53,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_82 [2022-11-22 02:41:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_82 [2022-11-22 02:41:53,854 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_remove_one [2022-11-22 02:41:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_remove_one [2022-11-22 02:41:53,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 02:41:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 02:41:53,854 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2022-11-22 02:41:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2022-11-22 02:41:53,855 INFO L130 BoogieDeclarations]: Found specification of procedure issue_and_wait [2022-11-22 02:41:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_and_wait [2022-11-22 02:41:53,855 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 02:41:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 02:41:53,855 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-22 02:41:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-22 02:41:53,856 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-22 02:41:53,856 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-22 02:41:53,856 INFO L130 BoogieDeclarations]: Found specification of procedure window_write32 [2022-11-22 02:41:53,856 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write32 [2022-11-22 02:41:53,856 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-22 02:41:53,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-22 02:41:53,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_65 [2022-11-22 02:41:53,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_65 [2022-11-22 02:41:53,857 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-22 02:41:53,857 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-22 02:41:53,857 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 02:41:53,857 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 02:41:53,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_window_lock_of_vortex_private [2022-11-22 02:41:53,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_window_lock_of_vortex_private [2022-11-22 02:41:53,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_vortex_private [2022-11-22 02:41:53,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_vortex_private [2022-11-22 02:41:53,858 INFO L130 BoogieDeclarations]: Found specification of procedure window_set [2022-11-22 02:41:53,858 INFO L138 BoogieDeclarations]: Found implementation of procedure window_set [2022-11-22 02:41:53,858 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-22 02:41:53,858 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-22 02:41:53,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 02:41:53,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 02:41:53,859 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 02:41:53,859 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 02:41:53,859 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-22 02:41:53,859 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-22 02:41:53,859 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-22 02:41:53,859 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-22 02:41:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-11-22 02:41:53,860 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-11-22 02:41:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 02:41:53,860 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 02:41:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 02:41:53,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 02:41:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2022-11-22 02:41:53,861 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2022-11-22 02:41:53,861 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 02:41:53,861 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 02:41:53,861 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-22 02:41:53,861 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-22 02:41:53,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:41:53,861 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tx_timestamp [2022-11-22 02:41:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tx_timestamp [2022-11-22 02:41:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-22 02:41:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-22 02:41:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 02:41:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 02:41:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-22 02:41:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-22 02:41:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 02:41:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_tx_timeout [2022-11-22 02:41:53,863 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_tx_timeout [2022-11-22 02:41:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2022-11-22 02:41:53,863 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2022-11-22 02:41:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure ioport_map [2022-11-22 02:41:53,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ioport_map [2022-11-22 02:41:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 02:41:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 02:41:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-22 02:41:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-22 02:41:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-22 02:41:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-22 02:41:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 02:41:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 02:41:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 02:41:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:41:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_interrupt [2022-11-22 02:41:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_interrupt [2022-11-22 02:41:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-22 02:41:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-22 02:41:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 02:41:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 02:41:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 02:41:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 02:41:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 02:41:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 02:41:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 02:41:53,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 02:41:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 02:41:53,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 02:41:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_set_duplex [2022-11-22 02:41:53,867 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_set_duplex [2022-11-22 02:41:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2022-11-22 02:41:53,867 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2022-11-22 02:41:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-11-22 02:41:53,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-11-22 02:41:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 02:41:53,868 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 02:41:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_error [2022-11-22 02:41:53,868 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_error [2022-11-22 02:41:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 02:41:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 02:41:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_close [2022-11-22 02:41:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_close [2022-11-22 02:41:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 02:41:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 02:41:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:41:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 02:41:53,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 02:41:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2022-11-22 02:41:53,870 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2022-11-22 02:41:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 02:41:53,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 02:41:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-22 02:41:53,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-22 02:41:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-22 02:41:53,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-22 02:41:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-22 02:41:53,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-22 02:41:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:41:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 02:41:53,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 02:41:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 02:41:53,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 02:41:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:41:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-22 02:41:53,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-22 02:41:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:41:53,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:41:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-22 02:41:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-22 02:41:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 02:41:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 02:41:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure acpi_set_WOL [2022-11-22 02:41:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure acpi_set_WOL [2022-11-22 02:41:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-22 02:41:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-22 02:41:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure window_write16 [2022-11-22 02:41:53,874 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write16 [2022-11-22 02:41:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2022-11-22 02:41:53,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2022-11-22 02:41:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-22 02:41:53,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-22 02:41:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure window_read8 [2022-11-22 02:41:53,875 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read8 [2022-11-22 02:41:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_vortex_cleanup_16_2 [2022-11-22 02:41:53,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_vortex_cleanup_16_2 [2022-11-22 02:41:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-22 02:41:53,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-22 02:41:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure update_stats [2022-11-22 02:41:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure update_stats [2022-11-22 02:41:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 02:41:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 02:41:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-22 02:41:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-22 02:41:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure poll_vortex [2022-11-22 02:41:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_vortex [2022-11-22 02:41:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 02:41:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 02:41:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_window_lock_of_vortex_private [2022-11-22 02:41:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_window_lock_of_vortex_private [2022-11-22 02:41:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_check_media [2022-11-22 02:41:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_check_media [2022-11-22 02:41:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-22 02:41:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-22 02:41:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_rx [2022-11-22 02:41:53,878 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_rx [2022-11-22 02:41:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2022-11-22 02:41:53,878 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2022-11-22 02:41:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_open [2022-11-22 02:41:53,878 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_open [2022-11-22 02:41:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure dump_tx_ring [2022-11-22 02:41:53,879 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_tx_ring [2022-11-22 02:41:53,879 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-22 02:41:53,879 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-22 02:41:53,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:41:53,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:41:53,879 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_probe1 [2022-11-22 02:41:53,879 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_probe1 [2022-11-22 02:41:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 02:41:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 02:41:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 02:41:53,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 02:41:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 02:41:53,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 02:41:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 02:41:53,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 02:41:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2022-11-22 02:41:53,881 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2022-11-22 02:41:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-22 02:41:53,881 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-22 02:41:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 02:41:53,881 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 02:41:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-22 02:41:53,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-22 02:41:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 02:41:53,882 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 02:41:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-22 02:41:53,882 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-22 02:41:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:41:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2022-11-22 02:41:53,883 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2022-11-22 02:41:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 02:41:53,883 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 02:41:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:41:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_suspend [2022-11-22 02:41:53,883 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_suspend [2022-11-22 02:41:53,884 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_interrupt [2022-11-22 02:41:53,884 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_interrupt [2022-11-22 02:41:53,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_81 [2022-11-22 02:41:53,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_81 [2022-11-22 02:41:53,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:41:53,884 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 02:41:53,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 02:41:53,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-22 02:41:53,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-22 02:41:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 02:41:53,885 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 02:41:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 02:41:53,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 02:41:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-22 02:41:53,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-22 02:41:53,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_108 [2022-11-22 02:41:53,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_108 [2022-11-22 02:41:53,886 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-22 02:41:53,886 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-22 02:41:53,886 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2022-11-22 02:41:53,886 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2022-11-22 02:41:53,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_89 [2022-11-22 02:41:53,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_89 [2022-11-22 02:41:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_88 [2022-11-22 02:41:53,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_88 [2022-11-22 02:41:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_resume [2022-11-22 02:41:53,887 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_resume [2022-11-22 02:41:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2022-11-22 02:41:53,887 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2022-11-22 02:41:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-22 02:41:53,887 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-22 02:41:53,888 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_rx [2022-11-22 02:41:53,888 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_rx [2022-11-22 02:41:53,889 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 02:41:53,889 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 02:41:53,889 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 02:41:53,890 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 02:41:53,890 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-22 02:41:53,890 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-22 02:41:53,890 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 02:41:53,890 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 02:41:53,890 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_delay [2022-11-22 02:41:53,891 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_delay [2022-11-22 02:41:53,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:41:53,891 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_down [2022-11-22 02:41:53,891 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_down [2022-11-22 02:41:53,891 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2022-11-22 02:41:53,891 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2022-11-22 02:41:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-22 02:41:53,892 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-22 02:41:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 02:41:53,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 02:41:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure window_write8 [2022-11-22 02:41:53,893 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write8 [2022-11-22 02:41:53,893 INFO L130 BoogieDeclarations]: Found specification of procedure window_read32 [2022-11-22 02:41:53,893 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read32 [2022-11-22 02:41:53,893 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-22 02:41:53,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-22 02:41:53,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_109 [2022-11-22 02:41:53,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_109 [2022-11-22 02:41:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_94 [2022-11-22 02:41:53,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_94 [2022-11-22 02:41:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32_rep [2022-11-22 02:41:53,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32_rep [2022-11-22 02:41:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_90 [2022-11-22 02:41:53,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_90 [2022-11-22 02:41:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-22 02:41:53,895 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-22 02:41:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_up [2022-11-22 02:41:53,895 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_up [2022-11-22 02:41:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure window_read16 [2022-11-22 02:41:53,896 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read16 [2022-11-22 02:41:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 02:41:53,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 02:41:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-22 02:41:53,896 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-22 02:41:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-22 02:41:53,897 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-22 02:41:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-22 02:41:53,897 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-22 02:41:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_vortex_private [2022-11-22 02:41:53,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_vortex_private [2022-11-22 02:41:53,898 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-22 02:41:53,898 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-22 02:41:53,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:41:53,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 02:41:53,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 02:41:53,899 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-22 02:41:53,899 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-22 02:41:55,068 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:41:55,072 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:41:56,827 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 02:42:04,028 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 02:42:04,249 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:42:08,141 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:42:08,141 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-22 02:42:08,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:42:08 BoogieIcfgContainer [2022-11-22 02:42:08,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:42:08,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:42:08,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:42:08,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:42:08,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:41:47" (1/3) ... [2022-11-22 02:42:08,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be84c61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:42:08, skipping insertion in model container [2022-11-22 02:42:08,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:52" (2/3) ... [2022-11-22 02:42:08,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be84c61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:42:08, skipping insertion in model container [2022-11-22 02:42:08,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:42:08" (3/3) ... [2022-11-22 02:42:08,160 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2022-11-22 02:42:08,180 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:42:08,180 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 02:42:08,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:42:08,307 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;@10967cf0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:42:08,307 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 02:42:08,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 2285 states, 1330 states have (on average 1.3353383458646617) internal successors, (1776), 1401 states have internal predecessors, (1776), 801 states have call successors, (801), 152 states have call predecessors, (801), 151 states have return successors, (792), 777 states have call predecessors, (792), 792 states have call successors, (792) [2022-11-22 02:42:08,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-22 02:42:08,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:42:08,343 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:08,343 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 02:42:08,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:42:08,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1122849551, now seen corresponding path program 1 times [2022-11-22 02:42:08,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:42:08,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095417544] [2022-11-22 02:42:08,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:42:08,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:42:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:42:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2022-11-22 02:42:09,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:42:09,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095417544] [2022-11-22 02:42:09,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095417544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:42:09,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:42:09,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:42:09,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513837722] [2022-11-22 02:42:09,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:42:09,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:42:09,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:42:09,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:42:09,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:42:09,804 INFO L87 Difference]: Start difference. First operand has 2285 states, 1330 states have (on average 1.3353383458646617) internal successors, (1776), 1401 states have internal predecessors, (1776), 801 states have call successors, (801), 152 states have call predecessors, (801), 151 states have return successors, (792), 777 states have call predecessors, (792), 792 states have call successors, (792) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-22 02:42:13,247 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 02:42:17,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:42:17,611 INFO L93 Difference]: Finished difference Result 6537 states and 10026 transitions. [2022-11-22 02:42:17,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:42:17,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 192 [2022-11-22 02:42:17,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:42:17,672 INFO L225 Difference]: With dead ends: 6537 [2022-11-22 02:42:17,672 INFO L226 Difference]: Without dead ends: 4274 [2022-11-22 02:42:17,699 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 02:42:17,702 INFO L413 NwaCegarLoop]: 3608 mSDtfsCounter, 2978 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2980 SdHoareTripleChecker+Valid, 6466 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:42:17,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2980 Valid, 6466 Invalid, 944 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 936 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-11-22 02:42:17,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4274 states. [2022-11-22 02:42:18,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4274 to 4269. [2022-11-22 02:42:18,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4269 states, 2504 states have (on average 1.3318690095846646) internal successors, (3335), 2641 states have internal predecessors, (3335), 1468 states have call successors, (1468), 295 states have call predecessors, (1468), 294 states have return successors, (1466), 1434 states have call predecessors, (1466), 1464 states have call successors, (1466) [2022-11-22 02:42:18,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4269 states to 4269 states and 6269 transitions. [2022-11-22 02:42:18,123 INFO L78 Accepts]: Start accepts. Automaton has 4269 states and 6269 transitions. Word has length 192 [2022-11-22 02:42:18,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:42:18,126 INFO L495 AbstractCegarLoop]: Abstraction has 4269 states and 6269 transitions. [2022-11-22 02:42:18,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-22 02:42:18,127 INFO L276 IsEmpty]: Start isEmpty. Operand 4269 states and 6269 transitions. [2022-11-22 02:42:18,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-22 02:42:18,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:42:18,149 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:18,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:42:18,150 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 02:42:18,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:42:18,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1524821021, now seen corresponding path program 1 times [2022-11-22 02:42:18,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:42:18,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959790964] [2022-11-22 02:42:18,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:42:18,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:42:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:42:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2022-11-22 02:42:19,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:42:19,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959790964] [2022-11-22 02:42:19,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959790964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:42:19,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:42:19,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:42:19,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536275119] [2022-11-22 02:42:19,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:42:19,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:42:19,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:42:19,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:42:19,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:42:19,065 INFO L87 Difference]: Start difference. First operand 4269 states and 6269 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-22 02:42:21,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:42:23,644 WARN L539 Checker$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 02:42:27,631 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 02:42:29,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:42:29,049 INFO L93 Difference]: Finished difference Result 12368 states and 18234 transitions. [2022-11-22 02:42:29,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:42:29,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 200 [2022-11-22 02:42:29,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:42:29,109 INFO L225 Difference]: With dead ends: 12368 [2022-11-22 02:42:29,109 INFO L226 Difference]: Without dead ends: 8134 [2022-11-22 02:42:29,135 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 02:42:29,136 INFO L413 NwaCegarLoop]: 3645 mSDtfsCounter, 2995 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2997 SdHoareTripleChecker+Valid, 6478 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:42:29,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2997 Valid, 6478 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 917 Invalid, 2 Unknown, 0 Unchecked, 9.5s Time] [2022-11-22 02:42:29,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8134 states. [2022-11-22 02:42:29,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8134 to 8101. [2022-11-22 02:42:29,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8101 states, 4756 states have (on average 1.3305298570227082) internal successors, (6328), 5014 states have internal predecessors, (6328), 2764 states have call successors, (2764), 583 states have call predecessors, (2764), 578 states have return successors, (2880), 2685 states have call predecessors, (2880), 2760 states have call successors, (2880) [2022-11-22 02:42:29,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8101 states to 8101 states and 11972 transitions. [2022-11-22 02:42:29,745 INFO L78 Accepts]: Start accepts. Automaton has 8101 states and 11972 transitions. Word has length 200 [2022-11-22 02:42:29,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:42:29,746 INFO L495 AbstractCegarLoop]: Abstraction has 8101 states and 11972 transitions. [2022-11-22 02:42:29,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-22 02:42:29,748 INFO L276 IsEmpty]: Start isEmpty. Operand 8101 states and 11972 transitions. [2022-11-22 02:42:29,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-22 02:42:29,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:42:29,755 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:29,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:42:29,756 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 02:42:29,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:42:29,767 INFO L85 PathProgramCache]: Analyzing trace with hash -707082908, now seen corresponding path program 1 times [2022-11-22 02:42:29,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:42:29,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897220750] [2022-11-22 02:42:29,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:42:29,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:42:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:42:30,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2022-11-22 02:42:30,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:42:30,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897220750] [2022-11-22 02:42:30,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897220750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:42:30,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:42:30,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:42:30,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745035488] [2022-11-22 02:42:30,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:42:30,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:42:30,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:42:30,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:42:30,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:42:30,490 INFO L87 Difference]: Start difference. First operand 8101 states and 11972 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-22 02:42:33,960 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 02:42:35,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:42:37,763 WARN L539 Checker$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 02:42:39,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:42:39,568 INFO L93 Difference]: Finished difference Result 19904 states and 29374 transitions. [2022-11-22 02:42:39,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:42:39,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 209 [2022-11-22 02:42:39,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:42:39,659 INFO L225 Difference]: With dead ends: 19904 [2022-11-22 02:42:39,659 INFO L226 Difference]: Without dead ends: 11838 [2022-11-22 02:42:39,710 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 02:42:39,711 INFO L413 NwaCegarLoop]: 3583 mSDtfsCounter, 2904 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2905 SdHoareTripleChecker+Valid, 6426 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:42:39,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2905 Valid, 6426 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 967 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2022-11-22 02:42:39,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11838 states. [2022-11-22 02:42:40,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11838 to 11805. [2022-11-22 02:42:40,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11805 states, 6937 states have (on average 1.324059391667868) internal successors, (9185), 7316 states have internal predecessors, (9185), 3998 states have call successors, (3998), 874 states have call predecessors, (3998), 867 states have return successors, (4168), 3873 states have call predecessors, (4168), 3994 states have call successors, (4168) [2022-11-22 02:42:40,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11805 states to 11805 states and 17351 transitions. [2022-11-22 02:42:40,498 INFO L78 Accepts]: Start accepts. Automaton has 11805 states and 17351 transitions. Word has length 209 [2022-11-22 02:42:40,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:42:40,500 INFO L495 AbstractCegarLoop]: Abstraction has 11805 states and 17351 transitions. [2022-11-22 02:42:40,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-22 02:42:40,500 INFO L276 IsEmpty]: Start isEmpty. Operand 11805 states and 17351 transitions. [2022-11-22 02:42:40,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-22 02:42:40,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:42:40,506 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:40,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:42:40,506 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 02:42:40,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:42:40,507 INFO L85 PathProgramCache]: Analyzing trace with hash -644824888, now seen corresponding path program 1 times [2022-11-22 02:42:40,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:42:40,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232801573] [2022-11-22 02:42:40,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:42:40,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:42:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:42:41,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2022-11-22 02:42:41,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:42:41,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232801573] [2022-11-22 02:42:41,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232801573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:42:41,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:42:41,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:42:41,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594451767] [2022-11-22 02:42:41,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:42:41,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:42:41,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:42:41,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:42:41,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:42:41,058 INFO L87 Difference]: Start difference. First operand 11805 states and 17351 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-22 02:42:44,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:42:46,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:42:48,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:42:53,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:42:53,161 INFO L93 Difference]: Finished difference Result 34383 states and 50479 transitions. [2022-11-22 02:42:53,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:42:53,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 210 [2022-11-22 02:42:53,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:42:53,333 INFO L225 Difference]: With dead ends: 34383 [2022-11-22 02:42:53,333 INFO L226 Difference]: Without dead ends: 22613 [2022-11-22 02:42:53,407 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 02:42:53,411 INFO L413 NwaCegarLoop]: 4273 mSDtfsCounter, 3073 mSDsluCounter, 2820 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3073 SdHoareTripleChecker+Valid, 7093 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:42:53,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3073 Valid, 7093 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1113 Invalid, 1 Unknown, 0 Unchecked, 11.1s Time] [2022-11-22 02:42:53,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22613 states. [2022-11-22 02:42:54,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22613 to 22574. [2022-11-22 02:42:54,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22574 states, 13228 states have (on average 1.3153159963713335) internal successors, (17399), 13976 states have internal predecessors, (17399), 7648 states have call successors, (7648), 1708 states have call predecessors, (7648), 1695 states have return successors, (7916), 7399 states have call predecessors, (7916), 7644 states have call successors, (7916) [2022-11-22 02:42:54,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22574 states to 22574 states and 32963 transitions. [2022-11-22 02:42:55,003 INFO L78 Accepts]: Start accepts. Automaton has 22574 states and 32963 transitions. Word has length 210 [2022-11-22 02:42:55,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:42:55,004 INFO L495 AbstractCegarLoop]: Abstraction has 22574 states and 32963 transitions. [2022-11-22 02:42:55,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-22 02:42:55,005 INFO L276 IsEmpty]: Start isEmpty. Operand 22574 states and 32963 transitions. [2022-11-22 02:42:55,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-22 02:42:55,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:42:55,009 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:42:55,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:42:55,009 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 02:42:55,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:42:55,010 INFO L85 PathProgramCache]: Analyzing trace with hash -2036017549, now seen corresponding path program 1 times [2022-11-22 02:42:55,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:42:55,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588214568] [2022-11-22 02:42:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:42:55,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:42:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:42:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2022-11-22 02:42:55,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:42:55,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588214568] [2022-11-22 02:42:55,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588214568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:42:55,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:42:55,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:42:55,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533029805] [2022-11-22 02:42:55,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:42:55,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:42:55,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:42:55,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:42:55,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:42:55,608 INFO L87 Difference]: Start difference. First operand 22574 states and 32963 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-22 02:42:57,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:43:02,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:43:04,618 WARN L539 Checker$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 02:43:06,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:43:06,172 INFO L93 Difference]: Finished difference Result 56056 states and 81335 transitions. [2022-11-22 02:43:06,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:43:06,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 210 [2022-11-22 02:43:06,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:43:06,361 INFO L225 Difference]: With dead ends: 56056 [2022-11-22 02:43:06,361 INFO L226 Difference]: Without dead ends: 33517 [2022-11-22 02:43:06,457 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 02:43:06,457 INFO L413 NwaCegarLoop]: 3584 mSDtfsCounter, 2943 mSDsluCounter, 2798 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2943 SdHoareTripleChecker+Valid, 6382 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:43:06,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2943 Valid, 6382 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 960 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2022-11-22 02:43:06,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33517 states. [2022-11-22 02:43:08,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33517 to 33468. [2022-11-22 02:43:08,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33468 states, 19530 states have (on average 1.2981566820276498) internal successors, (25353), 20606 states have internal predecessors, (25353), 11244 states have call successors, (11244), 2726 states have call predecessors, (11244), 2691 states have return successors, (11708), 10841 states have call predecessors, (11708), 11240 states have call successors, (11708) [2022-11-22 02:43:08,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33468 states to 33468 states and 48305 transitions. [2022-11-22 02:43:08,792 INFO L78 Accepts]: Start accepts. Automaton has 33468 states and 48305 transitions. Word has length 210 [2022-11-22 02:43:08,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:43:08,793 INFO L495 AbstractCegarLoop]: Abstraction has 33468 states and 48305 transitions. [2022-11-22 02:43:08,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-22 02:43:08,794 INFO L276 IsEmpty]: Start isEmpty. Operand 33468 states and 48305 transitions. [2022-11-22 02:43:08,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-22 02:43:08,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:43:08,802 INFO L195 NwaCegarLoop]: trace histogram [19, 17, 17, 17, 17, 17, 17, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:43:08,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:43:08,802 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 02:43:08,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:43:08,803 INFO L85 PathProgramCache]: Analyzing trace with hash 245050638, now seen corresponding path program 1 times [2022-11-22 02:43:08,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:43:08,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555305368] [2022-11-22 02:43:08,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:43:08,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:43:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:43:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2022-11-22 02:43:09,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:43:09,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555305368] [2022-11-22 02:43:09,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555305368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:43:09,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:43:09,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:43:09,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070649855] [2022-11-22 02:43:09,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:43:09,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:43:09,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:43:09,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:43:09,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:43:09,346 INFO L87 Difference]: Start difference. First operand 33468 states and 48305 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-22 02:43:12,062 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 02:43:17,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:43:17,405 INFO L93 Difference]: Finished difference Result 88003 states and 127158 transitions. [2022-11-22 02:43:17,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:43:17,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 230 [2022-11-22 02:43:17,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:43:17,866 INFO L225 Difference]: With dead ends: 88003 [2022-11-22 02:43:17,867 INFO L226 Difference]: Without dead ends: 54570 [2022-11-22 02:43:18,001 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 02:43:18,002 INFO L413 NwaCegarLoop]: 4061 mSDtfsCounter, 2967 mSDsluCounter, 2851 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2969 SdHoareTripleChecker+Valid, 6912 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:43:18,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2969 Valid, 6912 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1086 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-22 02:43:18,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54570 states. [2022-11-22 02:43:21,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54570 to 54455. [2022-11-22 02:43:21,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54455 states, 31848 states have (on average 1.298229088168802) internal successors, (41346), 33664 states have internal predecessors, (41346), 18222 states have call successors, (18222), 4443 states have call predecessors, (18222), 4382 states have return successors, (19042), 17514 states have call predecessors, (19042), 18218 states have call successors, (19042) [2022-11-22 02:43:21,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54455 states to 54455 states and 78610 transitions. [2022-11-22 02:43:21,504 INFO L78 Accepts]: Start accepts. Automaton has 54455 states and 78610 transitions. Word has length 230 [2022-11-22 02:43:21,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:43:21,505 INFO L495 AbstractCegarLoop]: Abstraction has 54455 states and 78610 transitions. [2022-11-22 02:43:21,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-22 02:43:21,505 INFO L276 IsEmpty]: Start isEmpty. Operand 54455 states and 78610 transitions. [2022-11-22 02:43:21,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-22 02:43:21,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:43:21,510 INFO L195 NwaCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:43:21,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:43:21,510 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 02:43:21,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:43:21,511 INFO L85 PathProgramCache]: Analyzing trace with hash 803244241, now seen corresponding path program 1 times [2022-11-22 02:43:21,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:43:21,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682668682] [2022-11-22 02:43:21,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:43:21,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:43:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:43:22,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1258 trivial. 0 not checked. [2022-11-22 02:43:22,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:43:22,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682668682] [2022-11-22 02:43:22,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682668682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:43:22,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:43:22,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:43:22,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990462980] [2022-11-22 02:43:22,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:43:22,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:43:22,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:43:22,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:43:22,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:43:22,840 INFO L87 Difference]: Start difference. First operand 54455 states and 78610 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-22 02:43:25,469 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 02:43:28,150 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 02:43:34,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:43:34,791 INFO L93 Difference]: Finished difference Result 56481 states and 81221 transitions. [2022-11-22 02:43:34,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:43:34,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 236 [2022-11-22 02:43:34,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:43:35,108 INFO L225 Difference]: With dead ends: 56481 [2022-11-22 02:43:35,108 INFO L226 Difference]: Without dead ends: 56479 [2022-11-22 02:43:35,134 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 02:43:35,135 INFO L413 NwaCegarLoop]: 3096 mSDtfsCounter, 3043 mSDsluCounter, 6936 mSDsCounter, 0 mSdLazyCounter, 1548 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3058 SdHoareTripleChecker+Valid, 10032 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1548 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:43:35,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3058 Valid, 10032 Invalid, 1551 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1548 Invalid, 2 Unknown, 0 Unchecked, 9.9s Time] [2022-11-22 02:43:35,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56479 states. [2022-11-22 02:43:37,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56479 to 56475. [2022-11-22 02:43:37,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56475 states, 32927 states have (on average 1.295016248063899) internal successors, (42641), 34801 states have internal predecessors, (42641), 18874 states have call successors, (18874), 4724 states have call predecessors, (18874), 4671 states have return successors, (19702), 18154 states have call predecessors, (19702), 18870 states have call successors, (19702) [2022-11-22 02:43:38,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56475 states to 56475 states and 81217 transitions. [2022-11-22 02:43:38,221 INFO L78 Accepts]: Start accepts. Automaton has 56475 states and 81217 transitions. Word has length 236 [2022-11-22 02:43:38,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:43:38,222 INFO L495 AbstractCegarLoop]: Abstraction has 56475 states and 81217 transitions. [2022-11-22 02:43:38,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-22 02:43:38,222 INFO L276 IsEmpty]: Start isEmpty. Operand 56475 states and 81217 transitions. [2022-11-22 02:43:38,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-22 02:43:38,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:43:38,228 INFO L195 NwaCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:43:38,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:43:38,229 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 02:43:38,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:43:38,229 INFO L85 PathProgramCache]: Analyzing trace with hash -574382884, now seen corresponding path program 1 times [2022-11-22 02:43:38,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:43:38,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038872925] [2022-11-22 02:43:38,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:43:38,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:43:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:43:39,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1259 trivial. 0 not checked. [2022-11-22 02:43:39,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:43:39,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038872925] [2022-11-22 02:43:39,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038872925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:43:39,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:43:39,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:43:39,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56044983] [2022-11-22 02:43:39,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:43:39,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:43:39,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:43:39,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:43:39,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:43:39,425 INFO L87 Difference]: Start difference. First operand 56475 states and 81217 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 02:43:41,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:43:43,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:43:45,416 WARN L539 Checker$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 02:43:47,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:43:48,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:43:54,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:43:54,671 INFO L93 Difference]: Finished difference Result 56481 states and 81222 transitions. [2022-11-22 02:43:54,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:43:54,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 242 [2022-11-22 02:43:54,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:43:54,942 INFO L225 Difference]: With dead ends: 56481 [2022-11-22 02:43:54,942 INFO L226 Difference]: Without dead ends: 56479 [2022-11-22 02:43:54,974 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 02:43:54,976 INFO L413 NwaCegarLoop]: 2876 mSDtfsCounter, 3262 mSDsluCounter, 5731 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3274 SdHoareTripleChecker+Valid, 8607 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:43:54,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3274 Valid, 8607 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1396 Invalid, 2 Unknown, 0 Unchecked, 12.8s Time] [2022-11-22 02:43:55,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56479 states. [2022-11-22 02:43:57,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56479 to 56479. [2022-11-22 02:43:57,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56479 states, 32930 states have (on average 1.2949893713938658) internal successors, (42644), 34804 states have internal predecessors, (42644), 18874 states have call successors, (18874), 4725 states have call predecessors, (18874), 4672 states have return successors, (19702), 18154 states have call predecessors, (19702), 18870 states have call successors, (19702) [2022-11-22 02:43:57,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56479 states to 56479 states and 81220 transitions. [2022-11-22 02:43:57,845 INFO L78 Accepts]: Start accepts. Automaton has 56479 states and 81220 transitions. Word has length 242 [2022-11-22 02:43:57,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:43:57,845 INFO L495 AbstractCegarLoop]: Abstraction has 56479 states and 81220 transitions. [2022-11-22 02:43:57,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 02:43:57,846 INFO L276 IsEmpty]: Start isEmpty. Operand 56479 states and 81220 transitions. [2022-11-22 02:43:57,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-11-22 02:43:57,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:43:57,852 INFO L195 NwaCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:43:57,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:43:57,853 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 02:43:57,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:43:57,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2009198167, now seen corresponding path program 1 times [2022-11-22 02:43:57,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:43:57,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030500598] [2022-11-22 02:43:57,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:43:57,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:43:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:43:58,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1267 trivial. 0 not checked. [2022-11-22 02:43:58,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:43:58,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030500598] [2022-11-22 02:43:58,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030500598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:43:58,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:43:58,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:43:58,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623335687] [2022-11-22 02:43:58,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:43:58,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:43:58,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:43:58,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:43:58,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:43:58,966 INFO L87 Difference]: Start difference. First operand 56479 states and 81220 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 02:44:01,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:44:04,191 WARN L539 Checker$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 02:44:10,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:44:10,158 INFO L93 Difference]: Finished difference Result 56489 states and 81227 transitions. [2022-11-22 02:44:10,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:44:10,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 245 [2022-11-22 02:44:10,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:44:10,354 INFO L225 Difference]: With dead ends: 56489 [2022-11-22 02:44:10,354 INFO L226 Difference]: Without dead ends: 56487 [2022-11-22 02:44:10,374 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 02:44:10,375 INFO L413 NwaCegarLoop]: 3099 mSDtfsCounter, 3039 mSDsluCounter, 6936 mSDsCounter, 0 mSdLazyCounter, 1548 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3052 SdHoareTripleChecker+Valid, 10035 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1548 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:44:10,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3052 Valid, 10035 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1548 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2022-11-22 02:44:10,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56487 states. [2022-11-22 02:44:13,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56487 to 56483. [2022-11-22 02:44:13,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56483 states, 32933 states have (on average 1.2949624996204414) internal successors, (42647), 34807 states have internal predecessors, (42647), 18874 states have call successors, (18874), 4726 states have call predecessors, (18874), 4673 states have return successors, (19702), 18154 states have call predecessors, (19702), 18870 states have call successors, (19702) [2022-11-22 02:44:13,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56483 states to 56483 states and 81223 transitions. [2022-11-22 02:44:13,696 INFO L78 Accepts]: Start accepts. Automaton has 56483 states and 81223 transitions. Word has length 245 [2022-11-22 02:44:13,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:44:13,697 INFO L495 AbstractCegarLoop]: Abstraction has 56483 states and 81223 transitions. [2022-11-22 02:44:13,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 02:44:13,697 INFO L276 IsEmpty]: Start isEmpty. Operand 56483 states and 81223 transitions. [2022-11-22 02:44:13,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-11-22 02:44:13,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:44:13,705 INFO L195 NwaCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:44:13,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:44:13,705 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 02:44:13,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:44:13,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1924281961, now seen corresponding path program 1 times [2022-11-22 02:44:13,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:44:13,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543340578] [2022-11-22 02:44:13,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:44:13,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:44:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:44:14,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1275 trivial. 0 not checked. [2022-11-22 02:44:14,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:44:14,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543340578] [2022-11-22 02:44:14,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543340578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:44:14,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:44:14,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:44:14,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258855259] [2022-11-22 02:44:14,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:44:14,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:44:14,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:44:14,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:44:14,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:44:14,756 INFO L87 Difference]: Start difference. First operand 56483 states and 81223 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 02:44:18,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:44:20,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:44:22,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:44:23,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:44:30,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:44:30,087 INFO L93 Difference]: Finished difference Result 56489 states and 81228 transitions. [2022-11-22 02:44:30,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:44:30,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 250 [2022-11-22 02:44:30,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:44:30,287 INFO L225 Difference]: With dead ends: 56489 [2022-11-22 02:44:30,287 INFO L226 Difference]: Without dead ends: 56487 [2022-11-22 02:44:30,309 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 02:44:30,309 INFO L413 NwaCegarLoop]: 2876 mSDtfsCounter, 3263 mSDsluCounter, 5731 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3273 SdHoareTripleChecker+Valid, 8607 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:44:30,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3273 Valid, 8607 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1396 Invalid, 2 Unknown, 0 Unchecked, 12.8s Time] [2022-11-22 02:44:30,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56487 states. [2022-11-22 02:44:33,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56487 to 56487. [2022-11-22 02:44:33,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56487 states, 32936 states have (on average 1.294935632742288) internal successors, (42650), 34810 states have internal predecessors, (42650), 18874 states have call successors, (18874), 4727 states have call predecessors, (18874), 4674 states have return successors, (19702), 18154 states have call predecessors, (19702), 18870 states have call successors, (19702) [2022-11-22 02:44:33,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56487 states to 56487 states and 81226 transitions. [2022-11-22 02:44:33,552 INFO L78 Accepts]: Start accepts. Automaton has 56487 states and 81226 transitions. Word has length 250 [2022-11-22 02:44:33,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:44:33,553 INFO L495 AbstractCegarLoop]: Abstraction has 56487 states and 81226 transitions. [2022-11-22 02:44:33,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 02:44:33,553 INFO L276 IsEmpty]: Start isEmpty. Operand 56487 states and 81226 transitions. [2022-11-22 02:44:33,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-11-22 02:44:33,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:44:33,559 INFO L195 NwaCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 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, 1, 1, 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 02:44:33,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:44:33,560 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 02:44:33,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:44:33,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1497763351, now seen corresponding path program 1 times [2022-11-22 02:44:33,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:44:33,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812335663] [2022-11-22 02:44:33,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:44:33,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:44:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:44:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1295 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1287 trivial. 0 not checked. [2022-11-22 02:44:34,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:44:34,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812335663] [2022-11-22 02:44:34,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812335663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:44:34,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:44:34,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:44:34,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519174306] [2022-11-22 02:44:34,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:44:34,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:44:34,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:44:34,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:44:34,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:44:34,447 INFO L87 Difference]: Start difference. First operand 56487 states and 81226 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-22 02:44:37,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:44:39,853 WARN L539 Checker$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 02:44:46,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:44:46,669 INFO L93 Difference]: Finished difference Result 56497 states and 81233 transitions. [2022-11-22 02:44:46,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:44:46,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 255 [2022-11-22 02:44:46,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:44:46,991 INFO L225 Difference]: With dead ends: 56497 [2022-11-22 02:44:46,991 INFO L226 Difference]: Without dead ends: 56495 [2022-11-22 02:44:47,008 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 02:44:47,008 INFO L413 NwaCegarLoop]: 3099 mSDtfsCounter, 3039 mSDsluCounter, 6936 mSDsCounter, 0 mSdLazyCounter, 1548 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 10035 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1548 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:44:47,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3050 Valid, 10035 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1548 Invalid, 2 Unknown, 0 Unchecked, 9.2s Time] [2022-11-22 02:44:47,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56495 states. [2022-11-22 02:44:49,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56495 to 56491. [2022-11-22 02:44:49,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56491 states, 32939 states have (on average 1.294908770758068) internal successors, (42653), 34813 states have internal predecessors, (42653), 18874 states have call successors, (18874), 4728 states have call predecessors, (18874), 4675 states have return successors, (19702), 18154 states have call predecessors, (19702), 18870 states have call successors, (19702) [2022-11-22 02:44:50,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56491 states to 56491 states and 81229 transitions. [2022-11-22 02:44:50,250 INFO L78 Accepts]: Start accepts. Automaton has 56491 states and 81229 transitions. Word has length 255 [2022-11-22 02:44:50,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:44:50,251 INFO L495 AbstractCegarLoop]: Abstraction has 56491 states and 81229 transitions. [2022-11-22 02:44:50,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-22 02:44:50,251 INFO L276 IsEmpty]: Start isEmpty. Operand 56491 states and 81229 transitions. [2022-11-22 02:44:50,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-11-22 02:44:50,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:44:50,258 INFO L195 NwaCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:44:50,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 02:44:50,259 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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 02:44:50,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:44:50,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1346337285, now seen corresponding path program 1 times [2022-11-22 02:44:50,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:44:50,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345363139] [2022-11-22 02:44:50,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:44:50,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:44:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:44:51,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2022-11-22 02:44:51,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:44:51,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345363139] [2022-11-22 02:44:51,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345363139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:44:51,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:44:51,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:44:51,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265673525] [2022-11-22 02:44:51,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:44:51,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:44:51,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:44:51,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:44:51,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:44:51,187 INFO L87 Difference]: Start difference. First operand 56491 states and 81229 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-22 02:44:53,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:44:55,057 WARN L539 Checker$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 02:44:57,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:44:59,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:01,328 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 02:45:08,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:45:08,899 INFO L93 Difference]: Finished difference Result 136977 states and 197123 transitions. [2022-11-22 02:45:08,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:45:08,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 258 [2022-11-22 02:45:08,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:45:09,428 INFO L225 Difference]: With dead ends: 136977 [2022-11-22 02:45:09,429 INFO L226 Difference]: Without dead ends: 80625 [2022-11-22 02:45:09,682 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 02:45:09,683 INFO L413 NwaCegarLoop]: 5339 mSDtfsCounter, 2901 mSDsluCounter, 2837 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 15 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2902 SdHoareTripleChecker+Valid, 8176 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:45:09,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2902 Valid, 8176 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1353 Invalid, 3 Unknown, 0 Unchecked, 12.7s Time] [2022-11-22 02:45:09,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80625 states. [2022-11-22 02:45:14,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80625 to 80514. [2022-11-22 02:45:14,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80514 states, 47036 states have (on average 1.294242707713241) internal successors, (60876), 49698 states have internal predecessors, (60876), 26814 states have call successors, (26814), 6742 states have call predecessors, (26814), 6661 states have return successors, (28020), 25773 states have call predecessors, (28020), 26810 states have call successors, (28020) [2022-11-22 02:45:15,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80514 states to 80514 states and 115710 transitions. [2022-11-22 02:45:15,514 INFO L78 Accepts]: Start accepts. Automaton has 80514 states and 115710 transitions. Word has length 258 [2022-11-22 02:45:15,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:45:15,515 INFO L495 AbstractCegarLoop]: Abstraction has 80514 states and 115710 transitions. [2022-11-22 02:45:15,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-22 02:45:15,515 INFO L276 IsEmpty]: Start isEmpty. Operand 80514 states and 115710 transitions. [2022-11-22 02:45:15,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-22 02:45:15,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:45:15,538 INFO L195 NwaCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:15,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 02:45:15,539 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:45:15,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:45:15,539 INFO L85 PathProgramCache]: Analyzing trace with hash 920521821, now seen corresponding path program 1 times [2022-11-22 02:45:15,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:45:15,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030690332] [2022-11-22 02:45:15,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:15,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:45:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:45:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1308 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1298 trivial. 0 not checked. [2022-11-22 02:45:16,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:45:16,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030690332] [2022-11-22 02:45:16,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030690332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:45:16,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:45:16,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:45:16,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729332971] [2022-11-22 02:45:16,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:45:16,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:45:16,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:45:16,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:45:16,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:45:16,482 INFO L87 Difference]: Start difference. First operand 80514 states and 115710 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-22 02:45:18,911 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 02:45:21,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:23,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:24,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:26,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []