./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3d612e3d3aaa54cbaaae78896c02f6ca9c3968df93584b0bde88897a60cfa04a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:45:09,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:45:09,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:45:09,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:45:09,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:45:09,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:45:09,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:45:09,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:45:09,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:45:09,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:45:09,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:45:09,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:45:09,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:45:09,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:45:09,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:45:09,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:45:09,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:45:09,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:45:09,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:45:09,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:45:09,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:45:09,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:45:09,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:45:09,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:45:09,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:45:09,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:45:09,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:45:09,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:45:09,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:45:09,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:45:09,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:45:09,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:45:09,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:45:09,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:45:09,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:45:09,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:45:09,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:45:09,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:45:09,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:45:09,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:45:09,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:45:09,381 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:45:09,434 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:45:09,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:45:09,435 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:45:09,435 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:45:09,436 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:45:09,438 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:45:09,438 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:45:09,438 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:45:09,438 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:45:09,439 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:45:09,440 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:45:09,440 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:45:09,440 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:45:09,440 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:45:09,441 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:45:09,441 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:45:09,441 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:45:09,441 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:45:09,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:45:09,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:45:09,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:45:09,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:45:09,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:45:09,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:45:09,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:45:09,444 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:45:09,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:45:09,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:45:09,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:45:09,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:45:09,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:45:09,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:45:09,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:45:09,448 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:45:09,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:45:09,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:45:09,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:45:09,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:45:09,449 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d612e3d3aaa54cbaaae78896c02f6ca9c3968df93584b0bde88897a60cfa04a [2021-11-25 18:45:09,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:45:09,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:45:09,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:45:09,752 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:45:09,752 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:45:09,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-25 18:45:09,827 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/bin/utaipan-eEHZpOm5b7/data/8e33544df/b494bb3ee5884ffbac1c99cc54539404/FLAG5c9f84865 [2021-11-25 18:45:10,696 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:45:10,697 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-25 18:45:10,753 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/bin/utaipan-eEHZpOm5b7/data/8e33544df/b494bb3ee5884ffbac1c99cc54539404/FLAG5c9f84865 [2021-11-25 18:45:11,154 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/bin/utaipan-eEHZpOm5b7/data/8e33544df/b494bb3ee5884ffbac1c99cc54539404 [2021-11-25 18:45:11,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:45:11,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:45:11,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:45:11,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:45:11,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:45:11,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:45:11" (1/1) ... [2021-11-25 18:45:11,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b6bbd29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:11, skipping insertion in model container [2021-11-25 18:45:11,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:45:11" (1/1) ... [2021-11-25 18:45:11,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:45:11,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:45:14,284 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319618,319631] [2021-11-25 18:45:14,295 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319787,319800] [2021-11-25 18:45:14,296 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319954,319967] [2021-11-25 18:45:14,297 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[320122,320135] [2021-11-25 18:45:14,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:45:14,397 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:45:14,770 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319618,319631] [2021-11-25 18:45:14,771 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319787,319800] [2021-11-25 18:45:14,771 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319954,319967] [2021-11-25 18:45:14,772 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[320122,320135] [2021-11-25 18:45:14,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:45:15,014 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:45:15,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:15 WrapperNode [2021-11-25 18:45:15,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:45:15,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:45:15,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:45:15,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:45:15,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:15" (1/1) ... [2021-11-25 18:45:15,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:15" (1/1) ... [2021-11-25 18:45:15,467 INFO L137 Inliner]: procedures = 434, calls = 1806, calls flagged for inlining = 214, calls inlined = 197, statements flattened = 4294 [2021-11-25 18:45:15,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:45:15,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:45:15,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:45:15,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:45:15,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:15" (1/1) ... [2021-11-25 18:45:15,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:15" (1/1) ... [2021-11-25 18:45:15,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:15" (1/1) ... [2021-11-25 18:45:15,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:15" (1/1) ... [2021-11-25 18:45:15,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:15" (1/1) ... [2021-11-25 18:45:15,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:15" (1/1) ... [2021-11-25 18:45:15,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:15" (1/1) ... [2021-11-25 18:45:15,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:45:15,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:45:15,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:45:15,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:45:15,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:15" (1/1) ... [2021-11-25 18:45:15,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:45:15,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:45:15,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:45:15,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_331497d5-24de-4c09-a2f5-c6c636bdb749/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:45:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure getlinkstatus [2021-11-25 18:45:15,867 INFO L138 BoogieDeclarations]: Found implementation of procedure getlinkstatus [2021-11-25 18:45:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-25 18:45:15,867 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-25 18:45:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 18:45:15,867 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 18:45:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:45:15,868 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:45:15,868 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-25 18:45:15,868 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-25 18:45:15,868 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 18:45:15,868 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 18:45:15,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:45:15,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:45:15,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 18:45:15,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 18:45:15,870 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 18:45:15,871 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 18:45:15,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_79 [2021-11-25 18:45:15,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_79 [2021-11-25 18:45:15,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_67 [2021-11-25 18:45:15,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_67 [2021-11-25 18:45:15,871 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-25 18:45:15,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-25 18:45:15,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:45:15,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:45:15,873 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 18:45:15,873 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 18:45:15,873 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-25 18:45:15,873 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-25 18:45:15,873 INFO L130 BoogieDeclarations]: Found specification of procedure fealnx_tx_timeout [2021-11-25 18:45:15,873 INFO L138 BoogieDeclarations]: Found implementation of procedure fealnx_tx_timeout [2021-11-25 18:45:15,874 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 18:45:15,874 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 18:45:15,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:45:15,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:45:15,875 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 18:45:15,875 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 18:45:15,875 INFO L130 BoogieDeclarations]: Found specification of procedure __set_rx_mode [2021-11-25 18:45:15,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_rx_mode [2021-11-25 18:45:15,875 INFO L130 BoogieDeclarations]: Found specification of procedure getlinktype [2021-11-25 18:45:15,876 INFO L138 BoogieDeclarations]: Found implementation of procedure getlinktype [2021-11-25 18:45:15,876 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 18:45:15,877 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 18:45:15,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:45:15,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-25 18:45:15,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-25 18:45:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 18:45:15,879 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 18:45:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:45:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure reset_rx_descriptors [2021-11-25 18:45:15,880 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_rx_descriptors [2021-11-25 18:45:15,880 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 18:45:15,880 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 18:45:15,880 INFO L130 BoogieDeclarations]: Found specification of procedure fealnx_remove_one [2021-11-25 18:45:15,881 INFO L138 BoogieDeclarations]: Found implementation of procedure fealnx_remove_one [2021-11-25 18:45:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:45:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:45:15,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:45:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:45:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-25 18:45:15,882 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-25 18:45:15,882 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 18:45:15,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 18:45:15,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 18:45:15,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 18:45:15,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 18:45:15,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 18:45:15,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 18:45:15,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 18:45:15,883 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 18:45:15,884 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 18:45:15,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 18:45:15,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 18:45:15,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:45:15,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 18:45:15,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 18:45:15,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 18:45:15,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 18:45:15,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:45:15,886 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2021-11-25 18:45:15,887 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2021-11-25 18:45:15,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:45:15,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:45:15,888 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 18:45:15,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 18:45:15,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:45:15,889 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:45:15,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:45:15,889 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:45:15,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:45:15,890 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 18:45:15,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 18:45:15,890 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 18:45:15,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 18:45:15,890 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 18:45:15,891 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 18:45:15,891 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-25 18:45:15,891 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-25 18:45:15,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 18:45:15,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 18:45:15,892 INFO L130 BoogieDeclarations]: Found specification of procedure stop_nic_rx [2021-11-25 18:45:15,892 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_nic_rx [2021-11-25 18:45:15,892 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-25 18:45:15,893 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-25 18:45:15,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:45:15,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:45:15,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:45:15,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:45:15,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:45:15,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:45:15,898 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_close [2021-11-25 18:45:15,898 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_close [2021-11-25 18:45:15,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 18:45:15,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 18:45:15,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 18:45:15,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 18:45:15,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_netdev_private [2021-11-25 18:45:15,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_netdev_private [2021-11-25 18:45:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure enable_rxtx [2021-11-25 18:45:15,906 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_rxtx [2021-11-25 18:45:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 18:45:15,906 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 18:45:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:45:15,906 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:45:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 18:45:15,907 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 18:45:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-25 18:45:15,907 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-25 18:45:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_78 [2021-11-25 18:45:15,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_78 [2021-11-25 18:45:15,908 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 18:45:15,908 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 18:45:15,908 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-25 18:45:15,908 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-25 18:45:15,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:45:15,908 INFO L130 BoogieDeclarations]: Found specification of procedure reset_and_disable_rxtx [2021-11-25 18:45:15,908 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_and_disable_rxtx [2021-11-25 18:45:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 18:45:15,909 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 18:45:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:45:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-25 18:45:15,909 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-25 18:45:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:45:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 18:45:15,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 18:45:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 18:45:15,910 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 18:45:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_netdev_private [2021-11-25 18:45:15,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_netdev_private [2021-11-25 18:45:15,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:45:15,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:45:15,911 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_open [2021-11-25 18:45:15,911 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_open [2021-11-25 18:45:15,911 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 18:45:15,911 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 18:45:15,911 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 18:45:15,912 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 18:45:15,912 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-25 18:45:15,912 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-25 18:45:15,913 INFO L130 BoogieDeclarations]: Found specification of procedure stop_nic_rxtx [2021-11-25 18:45:15,913 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_nic_rxtx [2021-11-25 18:45:15,913 INFO L130 BoogieDeclarations]: Found specification of procedure m80x_send_cmd_to_phy [2021-11-25 18:45:15,913 INFO L138 BoogieDeclarations]: Found implementation of procedure m80x_send_cmd_to_phy [2021-11-25 18:45:15,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:45:15,913 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_rx_buffers [2021-11-25 18:45:15,914 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_rx_buffers [2021-11-25 18:45:15,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:45:15,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:45:15,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:45:15,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:45:15,914 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 18:45:15,914 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 18:45:15,915 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-25 18:45:15,915 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-25 18:45:15,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:45:15,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:45:15,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:45:15,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fealnx_exit_14_2 [2021-11-25 18:45:15,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fealnx_exit_14_2 [2021-11-25 18:45:16,913 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:45:16,919 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:45:17,586 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:45:19,630 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 18:45:19,692 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:45:20,786 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:45:20,786 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 18:45:20,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:45:20 BoogieIcfgContainer [2021-11-25 18:45:20,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:45:20,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:45:20,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:45:20,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:45:20,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:45:11" (1/3) ... [2021-11-25 18:45:20,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5e15e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:45:20, skipping insertion in model container [2021-11-25 18:45:20,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:45:15" (2/3) ... [2021-11-25 18:45:20,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5e15e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:45:20, skipping insertion in model container [2021-11-25 18:45:20,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:45:20" (3/3) ... [2021-11-25 18:45:20,800 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-25 18:45:20,806 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:45:20,806 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 18:45:20,862 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:45:20,869 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:45:20,870 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 18:45:20,920 INFO L276 IsEmpty]: Start isEmpty. Operand has 1124 states, 651 states have (on average 1.2995391705069124) internal successors, (846), 672 states have internal predecessors, (846), 389 states have call successors, (389), 82 states have call predecessors, (389), 81 states have return successors, (383), 380 states have call predecessors, (383), 383 states have call successors, (383) [2021-11-25 18:45:20,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-25 18:45:20,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:45:20,938 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:45:20,938 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:45:20,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:45:20,944 INFO L85 PathProgramCache]: Analyzing trace with hash 969674018, now seen corresponding path program 1 times [2021-11-25 18:45:20,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:45:20,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575552203] [2021-11-25 18:45:20,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:45:20,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:45:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:45:21,563 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-25 18:45:21,564 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:45:21,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575552203] [2021-11-25 18:45:21,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575552203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:45:21,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:45:21,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:45:21,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173567712] [2021-11-25 18:45:21,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:45:21,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:45:21,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:45:21,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:45:21,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:45:21,623 INFO L87 Difference]: Start difference. First operand has 1124 states, 651 states have (on average 1.2995391705069124) internal successors, (846), 672 states have internal predecessors, (846), 389 states have call successors, (389), 82 states have call predecessors, (389), 81 states have return successors, (383), 380 states have call predecessors, (383), 383 states have call successors, (383) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 18:45:24,440 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:26,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:45:26,004 INFO L93 Difference]: Finished difference Result 3257 states and 4760 transitions. [2021-11-25 18:45:26,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:45:26,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2021-11-25 18:45:26,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:45:26,052 INFO L225 Difference]: With dead ends: 3257 [2021-11-25 18:45:26,052 INFO L226 Difference]: Without dead ends: 2142 [2021-11-25 18:45:26,065 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:45:26,069 INFO L933 BasicCegarLoop]: 1712 mSDtfsCounter, 1495 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:45:26,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1495 Valid, 3037 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 522 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-11-25 18:45:26,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2021-11-25 18:45:26,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2138. [2021-11-25 18:45:26,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2138 states, 1254 states have (on average 1.2926634768740033) internal successors, (1621), 1295 states have internal predecessors, (1621), 723 states have call successors, (723), 159 states have call predecessors, (723), 158 states have return successors, (719), 713 states have call predecessors, (719), 719 states have call successors, (719) [2021-11-25 18:45:26,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 3063 transitions. [2021-11-25 18:45:26,376 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 3063 transitions. Word has length 111 [2021-11-25 18:45:26,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:45:26,377 INFO L470 AbstractCegarLoop]: Abstraction has 2138 states and 3063 transitions. [2021-11-25 18:45:26,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 18:45:26,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 3063 transitions. [2021-11-25 18:45:26,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-25 18:45:26,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:45:26,394 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:45:26,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:45:26,395 INFO L402 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)] === [2021-11-25 18:45:26,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:45:26,398 INFO L85 PathProgramCache]: Analyzing trace with hash 679201334, now seen corresponding path program 1 times [2021-11-25 18:45:26,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:45:26,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575589833] [2021-11-25 18:45:26,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:45:26,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:45:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:45:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-25 18:45:26,673 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:45:26,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575589833] [2021-11-25 18:45:26,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575589833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:45:26,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:45:26,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:45:26,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438843608] [2021-11-25 18:45:26,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:45:26,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:45:26,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:45:26,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:45:26,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:45:26,684 INFO L87 Difference]: Start difference. First operand 2138 states and 3063 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-25 18:45:30,236 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:31,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:45:31,964 INFO L93 Difference]: Finished difference Result 6046 states and 8650 transitions. [2021-11-25 18:45:31,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:45:31,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2021-11-25 18:45:31,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:45:32,004 INFO L225 Difference]: With dead ends: 6046 [2021-11-25 18:45:32,004 INFO L226 Difference]: Without dead ends: 3927 [2021-11-25 18:45:32,017 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:45:32,018 INFO L933 BasicCegarLoop]: 1712 mSDtfsCounter, 1347 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:45:32,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1347 Valid, 3017 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 513 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-11-25 18:45:32,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2021-11-25 18:45:32,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 3897. [2021-11-25 18:45:32,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3897 states, 2281 states have (on average 1.288908373520386) internal successors, (2940), 2357 states have internal predecessors, (2940), 1308 states have call successors, (1308), 308 states have call predecessors, (1308), 305 states have return successors, (1322), 1281 states have call predecessors, (1322), 1304 states have call successors, (1322) [2021-11-25 18:45:32,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 5570 transitions. [2021-11-25 18:45:32,370 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 5570 transitions. Word has length 113 [2021-11-25 18:45:32,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:45:32,372 INFO L470 AbstractCegarLoop]: Abstraction has 3897 states and 5570 transitions. [2021-11-25 18:45:32,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-25 18:45:32,372 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 5570 transitions. [2021-11-25 18:45:32,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-25 18:45:32,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:45:32,375 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:45:32,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:45:32,376 INFO L402 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)] === [2021-11-25 18:45:32,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:45:32,377 INFO L85 PathProgramCache]: Analyzing trace with hash 799247234, now seen corresponding path program 1 times [2021-11-25 18:45:32,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:45:32,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259281649] [2021-11-25 18:45:32,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:45:32,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:45:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:45:32,589 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-25 18:45:32,589 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:45:32,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259281649] [2021-11-25 18:45:32,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259281649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:45:32,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:45:32,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:45:32,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459081187] [2021-11-25 18:45:32,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:45:32,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:45:32,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:45:32,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:45:32,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:45:32,600 INFO L87 Difference]: Start difference. First operand 3897 states and 5570 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-25 18:45:36,140 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:38,161 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:40,492 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:41,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:45:41,023 INFO L93 Difference]: Finished difference Result 11379 states and 16255 transitions. [2021-11-25 18:45:41,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:45:41,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2021-11-25 18:45:41,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:45:41,102 INFO L225 Difference]: With dead ends: 11379 [2021-11-25 18:45:41,102 INFO L226 Difference]: Without dead ends: 7501 [2021-11-25 18:45:41,130 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:45:41,135 INFO L933 BasicCegarLoop]: 1916 mSDtfsCounter, 1487 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 3213 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:45:41,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 3213 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 548 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2021-11-25 18:45:41,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7501 states. [2021-11-25 18:45:41,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7501 to 7467. [2021-11-25 18:45:41,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7467 states, 4391 states have (on average 1.2917330904122069) internal successors, (5672), 4547 states have internal predecessors, (5672), 2476 states have call successors, (2476), 608 states have call predecessors, (2476), 597 states have return successors, (2518), 2409 states have call predecessors, (2518), 2472 states have call successors, (2518) [2021-11-25 18:45:41,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7467 states to 7467 states and 10666 transitions. [2021-11-25 18:45:41,688 INFO L78 Accepts]: Start accepts. Automaton has 7467 states and 10666 transitions. Word has length 116 [2021-11-25 18:45:41,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:45:41,690 INFO L470 AbstractCegarLoop]: Abstraction has 7467 states and 10666 transitions. [2021-11-25 18:45:41,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-25 18:45:41,707 INFO L276 IsEmpty]: Start isEmpty. Operand 7467 states and 10666 transitions. [2021-11-25 18:45:41,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-25 18:45:41,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:45:41,710 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:45:41,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:45:41,710 INFO L402 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)] === [2021-11-25 18:45:41,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:45:41,711 INFO L85 PathProgramCache]: Analyzing trace with hash -335053181, now seen corresponding path program 1 times [2021-11-25 18:45:41,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:45:41,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762587154] [2021-11-25 18:45:41,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:45:41,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:45:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:45:41,944 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-25 18:45:41,944 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:45:41,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762587154] [2021-11-25 18:45:41,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762587154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:45:41,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:45:41,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:45:41,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711998698] [2021-11-25 18:45:41,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:45:41,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:45:41,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:45:41,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:45:41,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:45:41,948 INFO L87 Difference]: Start difference. First operand 7467 states and 10666 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 18:45:48,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:50,234 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:52,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:54,235 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:56,263 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:58,254 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:45:59,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:45:59,558 INFO L93 Difference]: Finished difference Result 17148 states and 24353 transitions. [2021-11-25 18:45:59,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:45:59,559 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2021-11-25 18:45:59,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:45:59,644 INFO L225 Difference]: With dead ends: 17148 [2021-11-25 18:45:59,644 INFO L226 Difference]: Without dead ends: 9700 [2021-11-25 18:45:59,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:45:59,683 INFO L933 BasicCegarLoop]: 2028 mSDtfsCounter, 4437 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 1575 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4552 SdHoareTripleChecker+Valid, 4199 SdHoareTripleChecker+Invalid, 3762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1575 IncrementalHoareTripleChecker+Valid, 2185 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:45:59,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4552 Valid, 4199 Invalid, 3762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1575 Valid, 2185 Invalid, 2 Unknown, 0 Unchecked, 17.0s Time] [2021-11-25 18:45:59,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9700 states. [2021-11-25 18:46:00,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9700 to 9628. [2021-11-25 18:46:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9628 states, 5696 states have (on average 1.285814606741573) internal successors, (7324), 5892 states have internal predecessors, (7324), 3092 states have call successors, (3092), 856 states have call predecessors, (3092), 837 states have return successors, (3111), 2999 states have call predecessors, (3111), 3088 states have call successors, (3111) [2021-11-25 18:46:00,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9628 states to 9628 states and 13527 transitions. [2021-11-25 18:46:00,360 INFO L78 Accepts]: Start accepts. Automaton has 9628 states and 13527 transitions. Word has length 117 [2021-11-25 18:46:00,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:00,362 INFO L470 AbstractCegarLoop]: Abstraction has 9628 states and 13527 transitions. [2021-11-25 18:46:00,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 18:46:00,362 INFO L276 IsEmpty]: Start isEmpty. Operand 9628 states and 13527 transitions. [2021-11-25 18:46:00,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-25 18:46:00,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:00,365 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:00,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:46:00,366 INFO L402 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)] === [2021-11-25 18:46:00,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:00,368 INFO L85 PathProgramCache]: Analyzing trace with hash -256087408, now seen corresponding path program 1 times [2021-11-25 18:46:00,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:00,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576520660] [2021-11-25 18:46:00,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:00,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:00,545 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-25 18:46:00,545 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:00,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576520660] [2021-11-25 18:46:00,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576520660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:00,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:00,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:46:00,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992730418] [2021-11-25 18:46:00,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:00,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:46:00,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:00,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:46:00,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:46:00,549 INFO L87 Difference]: Start difference. First operand 9628 states and 13527 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 18:46:02,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:06,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:07,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:07,518 INFO L93 Difference]: Finished difference Result 25158 states and 35272 transitions. [2021-11-25 18:46:07,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:46:07,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2021-11-25 18:46:07,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:07,744 INFO L225 Difference]: With dead ends: 25158 [2021-11-25 18:46:07,744 INFO L226 Difference]: Without dead ends: 15549 [2021-11-25 18:46:07,789 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:46:07,790 INFO L933 BasicCegarLoop]: 1682 mSDtfsCounter, 1375 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 2986 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:07,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1375 Valid, 2986 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 535 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-25 18:46:07,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15549 states. [2021-11-25 18:46:08,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15549 to 15517. [2021-11-25 18:46:08,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15517 states, 9158 states have (on average 1.27222100895392) internal successors, (11651), 9506 states have internal predecessors, (11651), 4983 states have call successors, (4983), 1410 states have call predecessors, (4983), 1373 states have return successors, (5028), 4793 states have call predecessors, (5028), 4979 states have call successors, (5028) [2021-11-25 18:46:08,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15517 states to 15517 states and 21662 transitions. [2021-11-25 18:46:08,683 INFO L78 Accepts]: Start accepts. Automaton has 15517 states and 21662 transitions. Word has length 117 [2021-11-25 18:46:08,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:08,684 INFO L470 AbstractCegarLoop]: Abstraction has 15517 states and 21662 transitions. [2021-11-25 18:46:08,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 18:46:08,685 INFO L276 IsEmpty]: Start isEmpty. Operand 15517 states and 21662 transitions. [2021-11-25 18:46:08,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-25 18:46:08,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:08,691 INFO L514 BasicCegarLoop]: trace histogram [11, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:08,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:46:08,692 INFO L402 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)] === [2021-11-25 18:46:08,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:08,693 INFO L85 PathProgramCache]: Analyzing trace with hash -461124589, now seen corresponding path program 1 times [2021-11-25 18:46:08,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:08,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491382778] [2021-11-25 18:46:08,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:08,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:08,920 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2021-11-25 18:46:08,920 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:08,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491382778] [2021-11-25 18:46:08,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491382778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:08,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:08,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:46:08,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320702402] [2021-11-25 18:46:08,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:08,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:46:08,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:08,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:46:08,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:46:08,923 INFO L87 Difference]: Start difference. First operand 15517 states and 21662 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-25 18:46:11,630 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:13,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:13,963 INFO L93 Difference]: Finished difference Result 45723 states and 63886 transitions. [2021-11-25 18:46:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:46:13,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 134 [2021-11-25 18:46:13,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:14,116 INFO L225 Difference]: With dead ends: 45723 [2021-11-25 18:46:14,117 INFO L226 Difference]: Without dead ends: 30225 [2021-11-25 18:46:14,169 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:46:14,170 INFO L933 BasicCegarLoop]: 1914 mSDtfsCounter, 1545 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 3253 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:14,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 3253 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 537 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-11-25 18:46:14,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30225 states. [2021-11-25 18:46:15,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30225 to 30151. [2021-11-25 18:46:15,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30151 states, 17767 states have (on average 1.2725277199302076) internal successors, (22609), 18491 states have internal predecessors, (22609), 9708 states have call successors, (9708), 2746 states have call predecessors, (9708), 2673 states have return successors, (9802), 9295 states have call predecessors, (9802), 9704 states have call successors, (9802) [2021-11-25 18:46:15,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30151 states to 30151 states and 42119 transitions. [2021-11-25 18:46:15,969 INFO L78 Accepts]: Start accepts. Automaton has 30151 states and 42119 transitions. Word has length 134 [2021-11-25 18:46:15,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:15,970 INFO L470 AbstractCegarLoop]: Abstraction has 30151 states and 42119 transitions. [2021-11-25 18:46:15,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-25 18:46:15,970 INFO L276 IsEmpty]: Start isEmpty. Operand 30151 states and 42119 transitions. [2021-11-25 18:46:15,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-25 18:46:15,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:15,974 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:15,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:46:15,975 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:46:15,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:15,975 INFO L85 PathProgramCache]: Analyzing trace with hash 2059422944, now seen corresponding path program 1 times [2021-11-25 18:46:15,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:15,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47755374] [2021-11-25 18:46:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:15,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:16,200 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-25 18:46:16,201 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:16,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47755374] [2021-11-25 18:46:16,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47755374] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:16,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:16,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:46:16,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451752655] [2021-11-25 18:46:16,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:16,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:46:16,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:16,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:46:16,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:46:16,203 INFO L87 Difference]: Start difference. First operand 30151 states and 42119 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 18:46:19,963 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:21,978 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:24,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:24,863 INFO L93 Difference]: Finished difference Result 30157 states and 42124 transitions. [2021-11-25 18:46:24,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:46:24,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 153 [2021-11-25 18:46:24,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:25,170 INFO L225 Difference]: With dead ends: 30157 [2021-11-25 18:46:25,170 INFO L226 Difference]: Without dead ends: 30155 [2021-11-25 18:46:25,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:46:25,183 INFO L933 BasicCegarLoop]: 1338 mSDtfsCounter, 1545 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:25,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1557 Valid, 4000 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 774 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2021-11-25 18:46:25,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30155 states. [2021-11-25 18:46:26,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30155 to 30155. [2021-11-25 18:46:26,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30155 states, 17770 states have (on average 1.2724817107484525) internal successors, (22612), 18494 states have internal predecessors, (22612), 9708 states have call successors, (9708), 2747 states have call predecessors, (9708), 2674 states have return successors, (9802), 9295 states have call predecessors, (9802), 9704 states have call successors, (9802) [2021-11-25 18:46:26,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30155 states to 30155 states and 42122 transitions. [2021-11-25 18:46:26,762 INFO L78 Accepts]: Start accepts. Automaton has 30155 states and 42122 transitions. Word has length 153 [2021-11-25 18:46:26,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:26,763 INFO L470 AbstractCegarLoop]: Abstraction has 30155 states and 42122 transitions. [2021-11-25 18:46:26,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 18:46:26,763 INFO L276 IsEmpty]: Start isEmpty. Operand 30155 states and 42122 transitions. [2021-11-25 18:46:26,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-25 18:46:26,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:26,767 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 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] [2021-11-25 18:46:26,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:46:26,767 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:46:26,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:26,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1467735381, now seen corresponding path program 1 times [2021-11-25 18:46:26,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:26,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677210276] [2021-11-25 18:46:26,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:26,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:26,994 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2021-11-25 18:46:26,994 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:26,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677210276] [2021-11-25 18:46:26,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677210276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:26,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:26,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:46:26,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50683599] [2021-11-25 18:46:26,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:26,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:46:26,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:26,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:46:26,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:46:26,997 INFO L87 Difference]: Start difference. First operand 30155 states and 42122 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 18:46:29,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:31,545 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:35,275 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:35,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:35,562 INFO L93 Difference]: Finished difference Result 30161 states and 42127 transitions. [2021-11-25 18:46:35,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:46:35,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 162 [2021-11-25 18:46:35,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:35,706 INFO L225 Difference]: With dead ends: 30161 [2021-11-25 18:46:35,706 INFO L226 Difference]: Without dead ends: 30159 [2021-11-25 18:46:35,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:46:35,721 INFO L933 BasicCegarLoop]: 1341 mSDtfsCounter, 1539 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 4003 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:35,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1550 Valid, 4003 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 775 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2021-11-25 18:46:35,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30159 states. [2021-11-25 18:46:37,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30159 to 30159. [2021-11-25 18:46:37,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30159 states, 17773 states have (on average 1.2724357170989704) internal successors, (22615), 18497 states have internal predecessors, (22615), 9708 states have call successors, (9708), 2748 states have call predecessors, (9708), 2675 states have return successors, (9802), 9295 states have call predecessors, (9802), 9704 states have call successors, (9802) [2021-11-25 18:46:37,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30159 states to 30159 states and 42125 transitions. [2021-11-25 18:46:37,252 INFO L78 Accepts]: Start accepts. Automaton has 30159 states and 42125 transitions. Word has length 162 [2021-11-25 18:46:37,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:37,253 INFO L470 AbstractCegarLoop]: Abstraction has 30159 states and 42125 transitions. [2021-11-25 18:46:37,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 18:46:37,253 INFO L276 IsEmpty]: Start isEmpty. Operand 30159 states and 42125 transitions. [2021-11-25 18:46:37,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-25 18:46:37,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:37,257 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2021-11-25 18:46:37,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:46:37,258 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:46:37,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:37,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1535553920, now seen corresponding path program 1 times [2021-11-25 18:46:37,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:37,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084119128] [2021-11-25 18:46:37,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:37,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:37,468 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2021-11-25 18:46:37,469 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:37,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084119128] [2021-11-25 18:46:37,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084119128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:37,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:37,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:46:37,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297293235] [2021-11-25 18:46:37,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:37,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:46:37,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:37,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:46:37,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:46:37,471 INFO L87 Difference]: Start difference. First operand 30159 states and 42125 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 18:46:41,132 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:43,154 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:46,246 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:47,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:47,186 INFO L93 Difference]: Finished difference Result 30165 states and 42130 transitions. [2021-11-25 18:46:47,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:46:47,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 163 [2021-11-25 18:46:47,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:47,316 INFO L225 Difference]: With dead ends: 30165 [2021-11-25 18:46:47,317 INFO L226 Difference]: Without dead ends: 30163 [2021-11-25 18:46:47,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:46:47,332 INFO L933 BasicCegarLoop]: 1341 mSDtfsCounter, 1540 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 4003 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:47,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1550 Valid, 4003 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 774 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2021-11-25 18:46:47,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30163 states. [2021-11-25 18:46:48,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30163 to 30163. [2021-11-25 18:46:48,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30163 states, 17776 states have (on average 1.2723897389738974) internal successors, (22618), 18500 states have internal predecessors, (22618), 9708 states have call successors, (9708), 2749 states have call predecessors, (9708), 2676 states have return successors, (9802), 9295 states have call predecessors, (9802), 9704 states have call successors, (9802) [2021-11-25 18:46:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30163 states to 30163 states and 42128 transitions. [2021-11-25 18:46:48,755 INFO L78 Accepts]: Start accepts. Automaton has 30163 states and 42128 transitions. Word has length 163 [2021-11-25 18:46:48,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:48,756 INFO L470 AbstractCegarLoop]: Abstraction has 30163 states and 42128 transitions. [2021-11-25 18:46:48,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 18:46:48,756 INFO L276 IsEmpty]: Start isEmpty. Operand 30163 states and 42128 transitions. [2021-11-25 18:46:48,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-25 18:46:48,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:48,761 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:46:48,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:46:48,762 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:46:48,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:48,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1838711045, now seen corresponding path program 1 times [2021-11-25 18:46:48,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:48,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278952893] [2021-11-25 18:46:48,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:48,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:48,955 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2021-11-25 18:46:48,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:48,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278952893] [2021-11-25 18:46:48,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278952893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:48,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:48,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:46:48,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203771104] [2021-11-25 18:46:48,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:48,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:46:48,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:48,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:46:48,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:46:48,958 INFO L87 Difference]: Start difference. First operand 30163 states and 42128 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 18:46:51,258 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:52,732 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:54,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:46:57,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:46:57,253 INFO L93 Difference]: Finished difference Result 30169 states and 42133 transitions. [2021-11-25 18:46:57,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:46:57,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 171 [2021-11-25 18:46:57,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:46:57,366 INFO L225 Difference]: With dead ends: 30169 [2021-11-25 18:46:57,366 INFO L226 Difference]: Without dead ends: 30167 [2021-11-25 18:46:57,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:46:57,379 INFO L933 BasicCegarLoop]: 1341 mSDtfsCounter, 1539 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 4003 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:46:57,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1548 Valid, 4003 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 775 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-11-25 18:46:57,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30167 states. [2021-11-25 18:46:58,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30167 to 30167. [2021-11-25 18:46:58,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30167 states, 17779 states have (on average 1.2723437763653749) internal successors, (22621), 18503 states have internal predecessors, (22621), 9708 states have call successors, (9708), 2750 states have call predecessors, (9708), 2677 states have return successors, (9802), 9295 states have call predecessors, (9802), 9704 states have call successors, (9802) [2021-11-25 18:46:58,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30167 states to 30167 states and 42131 transitions. [2021-11-25 18:46:58,915 INFO L78 Accepts]: Start accepts. Automaton has 30167 states and 42131 transitions. Word has length 171 [2021-11-25 18:46:58,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:46:58,915 INFO L470 AbstractCegarLoop]: Abstraction has 30167 states and 42131 transitions. [2021-11-25 18:46:58,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 18:46:58,916 INFO L276 IsEmpty]: Start isEmpty. Operand 30167 states and 42131 transitions. [2021-11-25 18:46:58,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-25 18:46:58,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:46:58,920 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 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] [2021-11-25 18:46:58,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 18:46:58,921 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:46:58,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:46:58,921 INFO L85 PathProgramCache]: Analyzing trace with hash 523849302, now seen corresponding path program 1 times [2021-11-25 18:46:58,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:46:58,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596126620] [2021-11-25 18:46:58,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:46:58,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:46:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:46:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2021-11-25 18:46:59,110 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:46:59,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596126620] [2021-11-25 18:46:59,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596126620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:46:59,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:46:59,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:46:59,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295763826] [2021-11-25 18:46:59,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:46:59,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:46:59,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:46:59,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:46:59,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:46:59,114 INFO L87 Difference]: Start difference. First operand 30167 states and 42131 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 18:47:01,414 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:03,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:06,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:47:06,592 INFO L93 Difference]: Finished difference Result 30173 states and 42136 transitions. [2021-11-25 18:47:06,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:47:06,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 176 [2021-11-25 18:47:06,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:47:06,686 INFO L225 Difference]: With dead ends: 30173 [2021-11-25 18:47:06,686 INFO L226 Difference]: Without dead ends: 30171 [2021-11-25 18:47:06,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:47:06,700 INFO L933 BasicCegarLoop]: 1341 mSDtfsCounter, 1539 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 4003 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:47:06,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 4003 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-11-25 18:47:06,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30171 states. [2021-11-25 18:47:07,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30171 to 30171. [2021-11-25 18:47:08,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30171 states, 17782 states have (on average 1.2722978292655494) internal successors, (22624), 18506 states have internal predecessors, (22624), 9708 states have call successors, (9708), 2751 states have call predecessors, (9708), 2678 states have return successors, (9802), 9295 states have call predecessors, (9802), 9704 states have call successors, (9802) [2021-11-25 18:47:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30171 states to 30171 states and 42134 transitions. [2021-11-25 18:47:08,105 INFO L78 Accepts]: Start accepts. Automaton has 30171 states and 42134 transitions. Word has length 176 [2021-11-25 18:47:08,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:47:08,106 INFO L470 AbstractCegarLoop]: Abstraction has 30171 states and 42134 transitions. [2021-11-25 18:47:08,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 18:47:08,106 INFO L276 IsEmpty]: Start isEmpty. Operand 30171 states and 42134 transitions. [2021-11-25 18:47:08,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-25 18:47:08,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:47:08,111 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 6, 5, 5, 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] [2021-11-25 18:47:08,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 18:47:08,112 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:47:08,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:47:08,113 INFO L85 PathProgramCache]: Analyzing trace with hash 840327643, now seen corresponding path program 1 times [2021-11-25 18:47:08,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:47:08,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900844010] [2021-11-25 18:47:08,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:47:08,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:47:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:47:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2021-11-25 18:47:08,281 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:47:08,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900844010] [2021-11-25 18:47:08,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900844010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:47:08,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:47:08,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:47:08,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276354371] [2021-11-25 18:47:08,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:47:08,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:47:08,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:47:08,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:47:08,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:47:08,284 INFO L87 Difference]: Start difference. First operand 30171 states and 42134 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 18:47:12,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:14,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:17,557 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:19,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:21,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:21,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:47:21,811 INFO L93 Difference]: Finished difference Result 30177 states and 42139 transitions. [2021-11-25 18:47:21,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:47:21,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 178 [2021-11-25 18:47:21,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:47:21,896 INFO L225 Difference]: With dead ends: 30177 [2021-11-25 18:47:21,896 INFO L226 Difference]: Without dead ends: 30175 [2021-11-25 18:47:21,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:47:21,910 INFO L933 BasicCegarLoop]: 1341 mSDtfsCounter, 1540 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 4003 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:47:21,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 4003 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 772 Invalid, 4 Unknown, 0 Unchecked, 12.4s Time] [2021-11-25 18:47:21,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30175 states. [2021-11-25 18:47:23,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30175 to 30175. [2021-11-25 18:47:23,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30175 states, 17785 states have (on average 1.2722518976665729) internal successors, (22627), 18509 states have internal predecessors, (22627), 9708 states have call successors, (9708), 2752 states have call predecessors, (9708), 2679 states have return successors, (9802), 9295 states have call predecessors, (9802), 9704 states have call successors, (9802) [2021-11-25 18:47:23,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30175 states to 30175 states and 42137 transitions. [2021-11-25 18:47:23,311 INFO L78 Accepts]: Start accepts. Automaton has 30175 states and 42137 transitions. Word has length 178 [2021-11-25 18:47:23,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:47:23,312 INFO L470 AbstractCegarLoop]: Abstraction has 30175 states and 42137 transitions. [2021-11-25 18:47:23,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 18:47:23,312 INFO L276 IsEmpty]: Start isEmpty. Operand 30175 states and 42137 transitions. [2021-11-25 18:47:23,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-25 18:47:23,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:47:23,316 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 7, 6, 6, 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] [2021-11-25 18:47:23,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 18:47:23,316 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:47:23,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:47:23,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1271837376, now seen corresponding path program 1 times [2021-11-25 18:47:23,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:47:23,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475362074] [2021-11-25 18:47:23,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:47:23,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:47:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:47:23,499 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2021-11-25 18:47:23,500 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:47:23,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475362074] [2021-11-25 18:47:23,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475362074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:47:23,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:47:23,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:47:23,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786325816] [2021-11-25 18:47:23,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:47:23,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:47:23,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:47:23,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:47:23,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:47:23,502 INFO L87 Difference]: Start difference. First operand 30175 states and 42137 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 18:47:27,279 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:29,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:31,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:34,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:47:34,537 INFO L93 Difference]: Finished difference Result 34059 states and 46635 transitions. [2021-11-25 18:47:34,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:47:34,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 183 [2021-11-25 18:47:34,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:47:34,642 INFO L225 Difference]: With dead ends: 34059 [2021-11-25 18:47:34,642 INFO L226 Difference]: Without dead ends: 34057 [2021-11-25 18:47:34,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:47:34,659 INFO L933 BasicCegarLoop]: 1494 mSDtfsCounter, 1175 mSDsluCounter, 4162 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 5000 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:47:34,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 5000 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 958 Invalid, 3 Unknown, 0 Unchecked, 9.6s Time] [2021-11-25 18:47:34,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34057 states. [2021-11-25 18:47:36,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34057 to 34055. [2021-11-25 18:47:36,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34055 states, 20012 states have (on average 1.2635418748750749) internal successors, (25286), 20814 states have internal predecessors, (25286), 10626 states have call successors, (10626), 3487 states have call predecessors, (10626), 3414 states have return successors, (10720), 10213 states have call predecessors, (10720), 10622 states have call successors, (10720) [2021-11-25 18:47:36,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34055 states to 34055 states and 46632 transitions. [2021-11-25 18:47:36,377 INFO L78 Accepts]: Start accepts. Automaton has 34055 states and 46632 transitions. Word has length 183 [2021-11-25 18:47:36,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:47:36,378 INFO L470 AbstractCegarLoop]: Abstraction has 34055 states and 46632 transitions. [2021-11-25 18:47:36,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 18:47:36,378 INFO L276 IsEmpty]: Start isEmpty. Operand 34055 states and 46632 transitions. [2021-11-25 18:47:36,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-25 18:47:36,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:47:36,384 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 8, 7, 7, 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] [2021-11-25 18:47:36,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 18:47:36,385 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:47:36,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:47:36,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1884602181, now seen corresponding path program 1 times [2021-11-25 18:47:36,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:47:36,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562689650] [2021-11-25 18:47:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:47:36,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:47:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:47:36,550 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-11-25 18:47:36,551 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:47:36,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562689650] [2021-11-25 18:47:36,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562689650] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:47:36,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:47:36,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:47:36,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439819017] [2021-11-25 18:47:36,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:47:36,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:47:36,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:47:36,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:47:36,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:47:36,553 INFO L87 Difference]: Start difference. First operand 34055 states and 46632 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 18:47:39,280 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:40,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:42,418 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:44,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:47:44,697 INFO L93 Difference]: Finished difference Result 34751 states and 47358 transitions. [2021-11-25 18:47:44,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:47:44,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 188 [2021-11-25 18:47:44,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:47:44,782 INFO L225 Difference]: With dead ends: 34751 [2021-11-25 18:47:44,782 INFO L226 Difference]: Without dead ends: 34749 [2021-11-25 18:47:44,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:47:44,792 INFO L933 BasicCegarLoop]: 1384 mSDtfsCounter, 1528 mSDsluCounter, 3330 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 4191 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:47:44,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 4191 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 800 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-11-25 18:47:44,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34749 states. [2021-11-25 18:47:46,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34749 to 34747. [2021-11-25 18:47:46,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34747 states, 20431 states have (on average 1.2620527629582496) internal successors, (25785), 21257 states have internal predecessors, (25785), 10738 states have call successors, (10738), 3648 states have call predecessors, (10738), 3575 states have return successors, (10832), 10325 states have call predecessors, (10832), 10734 states have call successors, (10832) [2021-11-25 18:47:46,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34747 states to 34747 states and 47355 transitions. [2021-11-25 18:47:46,292 INFO L78 Accepts]: Start accepts. Automaton has 34747 states and 47355 transitions. Word has length 188 [2021-11-25 18:47:46,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:47:46,292 INFO L470 AbstractCegarLoop]: Abstraction has 34747 states and 47355 transitions. [2021-11-25 18:47:46,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 18:47:46,293 INFO L276 IsEmpty]: Start isEmpty. Operand 34747 states and 47355 transitions. [2021-11-25 18:47:46,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-25 18:47:46,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:47:46,300 INFO L514 BasicCegarLoop]: trace histogram [15, 9, 9, 9, 9, 9, 9, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:47:46,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 18:47:46,301 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:47:46,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:47:46,301 INFO L85 PathProgramCache]: Analyzing trace with hash 523540488, now seen corresponding path program 1 times [2021-11-25 18:47:46,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:47:46,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621340218] [2021-11-25 18:47:46,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:47:46,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:47:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:47:46,445 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2021-11-25 18:47:46,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:47:46,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621340218] [2021-11-25 18:47:46,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621340218] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:47:46,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:47:46,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:47:46,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566809679] [2021-11-25 18:47:46,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:47:46,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:47:46,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:47:46,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:47:46,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:47:46,448 INFO L87 Difference]: Start difference. First operand 34747 states and 47355 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-25 18:47:49,434 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:51,458 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:53,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:56,318 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:47:57,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:47:57,083 INFO L93 Difference]: Finished difference Result 77661 states and 105897 transitions. [2021-11-25 18:47:57,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:47:57,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 187 [2021-11-25 18:47:57,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:47:57,222 INFO L225 Difference]: With dead ends: 77661 [2021-11-25 18:47:57,222 INFO L226 Difference]: Without dead ends: 42979 [2021-11-25 18:47:57,317 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:47:57,318 INFO L933 BasicCegarLoop]: 2074 mSDtfsCounter, 1047 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:47:57,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1047 Valid, 3376 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 702 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2021-11-25 18:47:57,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42979 states. [2021-11-25 18:47:59,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42979 to 42891. [2021-11-25 18:47:59,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42891 states, 25329 states have (on average 1.2614394567491807) internal successors, (31951), 26341 states have internal predecessors, (31951), 13132 states have call successors, (13132), 4516 states have call predecessors, (13132), 4427 states have return successors, (13226), 12619 states have call predecessors, (13226), 13128 states have call successors, (13226) [2021-11-25 18:47:59,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42891 states to 42891 states and 58309 transitions. [2021-11-25 18:47:59,780 INFO L78 Accepts]: Start accepts. Automaton has 42891 states and 58309 transitions. Word has length 187 [2021-11-25 18:47:59,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:47:59,780 INFO L470 AbstractCegarLoop]: Abstraction has 42891 states and 58309 transitions. [2021-11-25 18:47:59,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-25 18:47:59,781 INFO L276 IsEmpty]: Start isEmpty. Operand 42891 states and 58309 transitions. [2021-11-25 18:47:59,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-25 18:47:59,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:47:59,785 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 9, 8, 8, 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] [2021-11-25 18:47:59,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 18:47:59,786 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:47:59,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:47:59,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1660137632, now seen corresponding path program 1 times [2021-11-25 18:47:59,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:47:59,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39458549] [2021-11-25 18:47:59,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:47:59,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:47:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:47:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2021-11-25 18:47:59,948 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:47:59,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39458549] [2021-11-25 18:47:59,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39458549] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:47:59,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:47:59,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:47:59,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711816821] [2021-11-25 18:47:59,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:47:59,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:47:59,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:47:59,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:47:59,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:47:59,951 INFO L87 Difference]: Start difference. First operand 42891 states and 58309 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-25 18:48:02,205 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:48:03,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:48:05,618 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:48:08,161 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:48:09,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:48:09,125 INFO L93 Difference]: Finished difference Result 42897 states and 58314 transitions. [2021-11-25 18:48:09,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:48:09,126 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 193 [2021-11-25 18:48:09,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:48:09,278 INFO L225 Difference]: With dead ends: 42897 [2021-11-25 18:48:09,278 INFO L226 Difference]: Without dead ends: 42895 [2021-11-25 18:48:09,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:48:09,296 INFO L933 BasicCegarLoop]: 1341 mSDtfsCounter, 1540 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 4003 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:48:09,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1544 Valid, 4003 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 775 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-11-25 18:48:09,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42895 states. [2021-11-25 18:48:11,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42895 to 42895. [2021-11-25 18:48:11,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42895 states, 25332 states have (on average 1.261408495183957) internal successors, (31954), 26344 states have internal predecessors, (31954), 13132 states have call successors, (13132), 4517 states have call predecessors, (13132), 4428 states have return successors, (13226), 12619 states have call predecessors, (13226), 13128 states have call successors, (13226) [2021-11-25 18:48:11,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42895 states to 42895 states and 58312 transitions. [2021-11-25 18:48:11,494 INFO L78 Accepts]: Start accepts. Automaton has 42895 states and 58312 transitions. Word has length 193 [2021-11-25 18:48:11,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:48:11,495 INFO L470 AbstractCegarLoop]: Abstraction has 42895 states and 58312 transitions. [2021-11-25 18:48:11,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-25 18:48:11,495 INFO L276 IsEmpty]: Start isEmpty. Operand 42895 states and 58312 transitions. [2021-11-25 18:48:11,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-25 18:48:11,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:48:11,499 INFO L514 BasicCegarLoop]: trace histogram [15, 9, 9, 9, 9, 9, 9, 5, 5, 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] [2021-11-25 18:48:11,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 18:48:11,500 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:48:11,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:48:11,500 INFO L85 PathProgramCache]: Analyzing trace with hash 993165492, now seen corresponding path program 1 times [2021-11-25 18:48:11,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:48:11,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324032861] [2021-11-25 18:48:11,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:11,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:48:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:11,667 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-11-25 18:48:11,668 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:48:11,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324032861] [2021-11-25 18:48:11,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324032861] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:48:11,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:48:11,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:48:11,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79407566] [2021-11-25 18:48:11,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:48:11,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:48:11,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:48:11,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:48:11,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:48:11,670 INFO L87 Difference]: Start difference. First operand 42895 states and 58312 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 18:48:14,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:48:17,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:48:17,849 INFO L93 Difference]: Finished difference Result 43059 states and 58474 transitions. [2021-11-25 18:48:17,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:48:17,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 191 [2021-11-25 18:48:17,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:48:17,988 INFO L225 Difference]: With dead ends: 43059 [2021-11-25 18:48:17,988 INFO L226 Difference]: Without dead ends: 43057 [2021-11-25 18:48:18,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:48:18,008 INFO L933 BasicCegarLoop]: 1503 mSDtfsCounter, 1170 mSDsluCounter, 4202 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 5044 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:48:18,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1172 Valid, 5044 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 958 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-25 18:48:18,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43057 states. [2021-11-25 18:48:20,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43057 to 43055. [2021-11-25 18:48:20,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43055 states, 25452 states have (on average 1.2594688040232596) internal successors, (32056), 26464 states have internal predecessors, (32056), 13132 states have call successors, (13132), 4557 states have call predecessors, (13132), 4468 states have return successors, (13226), 12619 states have call predecessors, (13226), 13128 states have call successors, (13226) [2021-11-25 18:48:20,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43055 states to 43055 states and 58414 transitions. [2021-11-25 18:48:20,200 INFO L78 Accepts]: Start accepts. Automaton has 43055 states and 58414 transitions. Word has length 191 [2021-11-25 18:48:20,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:48:20,201 INFO L470 AbstractCegarLoop]: Abstraction has 43055 states and 58414 transitions. [2021-11-25 18:48:20,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 18:48:20,201 INFO L276 IsEmpty]: Start isEmpty. Operand 43055 states and 58414 transitions. [2021-11-25 18:48:20,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-25 18:48:20,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:48:20,205 INFO L514 BasicCegarLoop]: trace histogram [13, 10, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:48:20,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 18:48:20,206 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:48:20,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:48:20,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1043286117, now seen corresponding path program 1 times [2021-11-25 18:48:20,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:48:20,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141223046] [2021-11-25 18:48:20,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:20,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:48:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2021-11-25 18:48:20,370 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:48:20,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141223046] [2021-11-25 18:48:20,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141223046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:48:20,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:48:20,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:48:20,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467436666] [2021-11-25 18:48:20,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:48:20,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:48:20,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:48:20,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:48:20,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:48:20,373 INFO L87 Difference]: Start difference. First operand 43055 states and 58414 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (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) [2021-11-25 18:48:23,830 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:48:29,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:48:29,150 INFO L93 Difference]: Finished difference Result 86035 states and 116729 transitions. [2021-11-25 18:48:29,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:48:29,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 198 [2021-11-25 18:48:29,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted.