./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-mutex_drivers-net-ethernet-micrel-ks8851.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa71f83a-7950-4d42-820f-cfc320848baa/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa71f83a-7950-4d42-820f-cfc320848baa/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa71f83a-7950-4d42-820f-cfc320848baa/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa71f83a-7950-4d42-820f-cfc320848baa/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa71f83a-7950-4d42-820f-cfc320848baa/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa71f83a-7950-4d42-820f-cfc320848baa/bin/utaipan-TEXQjIfE4P --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 adad89b7f673beaaf8bb114b70e1447440d8d3333aba6712cecf0b1e8decf472 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:03:45,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:03:45,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:03:45,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:03:45,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:03:45,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:03:45,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:03:45,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:03:45,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:03:45,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:03:45,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:03:45,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:03:45,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:03:45,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:03:45,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:03:45,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:03:45,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:03:45,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:03:45,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:03:45,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:03:45,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:03:45,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:03:45,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:03:45,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:03:45,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:03:45,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:03:45,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:03:45,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:03:45,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:03:45,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:03:45,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:03:45,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:03:45,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:03:45,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:03:45,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:03:45,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:03:45,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:03:45,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:03:45,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:03:45,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:03:45,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:03:45,646 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa71f83a-7950-4d42-820f-cfc320848baa/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:03:45,697 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:03:45,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:03:45,700 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:03:45,700 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:03:45,701 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:03:45,701 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:03:45,702 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:03:45,702 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:03:45,702 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:03:45,702 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:03:45,704 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:03:45,704 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:03:45,704 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:03:45,704 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:03:45,705 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:03:45,705 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:03:45,705 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:03:45,705 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:03:45,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:03:45,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:03:45,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:03:45,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:03:45,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:03:45,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:03:45,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:03:45,708 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:03:45,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:03:45,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:03:45,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:03:45,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:03:45,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:03:45,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:03:45,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:03:45,711 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:03:45,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:03:45,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:03:45,712 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:03:45,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:03:45,713 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_fa71f83a-7950-4d42-820f-cfc320848baa/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa71f83a-7950-4d42-820f-cfc320848baa/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adad89b7f673beaaf8bb114b70e1447440d8d3333aba6712cecf0b1e8decf472 [2021-11-21 01:03:45,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:03:46,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:03:46,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:03:46,038 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:03:46,038 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:03:46,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa71f83a-7950-4d42-820f-cfc320848baa/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i [2021-11-21 01:03:46,136 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa71f83a-7950-4d42-820f-cfc320848baa/bin/utaipan-TEXQjIfE4P/data/3f96aeb09/bcf0cc2ab25741348820fad2039b6c52/FLAG3240fa036 [2021-11-21 01:03:47,219 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:03:47,220 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa71f83a-7950-4d42-820f-cfc320848baa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i [2021-11-21 01:03:47,278 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa71f83a-7950-4d42-820f-cfc320848baa/bin/utaipan-TEXQjIfE4P/data/3f96aeb09/bcf0cc2ab25741348820fad2039b6c52/FLAG3240fa036 [2021-11-21 01:03:47,506 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa71f83a-7950-4d42-820f-cfc320848baa/bin/utaipan-TEXQjIfE4P/data/3f96aeb09/bcf0cc2ab25741348820fad2039b6c52 [2021-11-21 01:03:47,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:03:47,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:03:47,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:03:47,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:03:47,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:03:47,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:03:47" (1/1) ... [2021-11-21 01:03:47,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cffaebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:47, skipping insertion in model container [2021-11-21 01:03:47,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:03:47" (1/1) ... [2021-11-21 01:03:47,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:03:47,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:03:50,702 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_fa71f83a-7950-4d42-820f-cfc320848baa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295786,295799] [2021-11-21 01:03:50,705 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_fa71f83a-7950-4d42-820f-cfc320848baa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295952,295965] [2021-11-21 01:03:50,706 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_fa71f83a-7950-4d42-820f-cfc320848baa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296116,296129] [2021-11-21 01:03:50,707 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_fa71f83a-7950-4d42-820f-cfc320848baa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296281,296294] [2021-11-21 01:03:50,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:03:50,762 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:03:51,223 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_fa71f83a-7950-4d42-820f-cfc320848baa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295786,295799] [2021-11-21 01:03:51,224 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_fa71f83a-7950-4d42-820f-cfc320848baa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295952,295965] [2021-11-21 01:03:51,225 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_fa71f83a-7950-4d42-820f-cfc320848baa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296116,296129] [2021-11-21 01:03:51,225 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_fa71f83a-7950-4d42-820f-cfc320848baa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296281,296294] [2021-11-21 01:03:51,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:03:51,512 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:03:51,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:51 WrapperNode [2021-11-21 01:03:51,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:03:51,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:03:51,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:03:51,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:03:51,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:51" (1/1) ... [2021-11-21 01:03:51,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:51" (1/1) ... [2021-11-21 01:03:51,824 INFO L137 Inliner]: procedures = 396, calls = 1613, calls flagged for inlining = 229, calls inlined = 191, statements flattened = 3922 [2021-11-21 01:03:51,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:03:51,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:03:51,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:03:51,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:03:51,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:51" (1/1) ... [2021-11-21 01:03:51,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:51" (1/1) ... [2021-11-21 01:03:51,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:51" (1/1) ... [2021-11-21 01:03:51,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:51" (1/1) ... [2021-11-21 01:03:51,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:51" (1/1) ... [2021-11-21 01:03:52,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:51" (1/1) ... [2021-11-21 01:03:52,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:51" (1/1) ... [2021-11-21 01:03:52,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:03:52,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:03:52,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:03:52,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:03:52,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:51" (1/1) ... [2021-11-21 01:03:52,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:03:52,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa71f83a-7950-4d42-820f-cfc320848baa/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:03:52,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa71f83a-7950-4d42-820f-cfc320848baa/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:03:52,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa71f83a-7950-4d42-820f-cfc320848baa/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:03:52,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:03:52,169 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:03:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:03:52,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:03:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ks8851_driver_exit_14_2 [2021-11-21 01:03:52,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ks8851_driver_exit_14_2 [2021-11-21 01:03:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 01:03:52,171 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 01:03:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_resume [2021-11-21 01:03:52,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_resume [2021-11-21 01:03:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:03:52,172 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:03:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2021-11-21 01:03:52,172 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2021-11-21 01:03:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 01:03:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_net_stop [2021-11-21 01:03:52,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_net_stop [2021-11-21 01:03:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:03:52,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:03:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 01:03:52,173 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 01:03:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 01:03:52,173 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 01:03:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:03:52,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:03:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-21 01:03:52,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-21 01:03:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:03:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2021-11-21 01:03:52,175 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2021-11-21 01:03:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:03:52,175 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:03:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 01:03:52,176 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 01:03:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:03:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 01:03:52,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 01:03:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:03:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2021-11-21 01:03:52,177 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2021-11-21 01:03:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:03:52,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:03:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:03:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2021-11-21 01:03:52,179 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2021-11-21 01:03:52,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:03:52,180 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:03:52,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:03:52,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:03:52,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_ks8851_net [2021-11-21 01:03:52,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_ks8851_net [2021-11-21 01:03:52,181 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rdreg8 [2021-11-21 01:03:52,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rdreg8 [2021-11-21 01:03:52,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:03:52,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 01:03:52,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 01:03:52,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 01:03:52,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 01:03:52,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-11-21 01:03:52,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-11-21 01:03:52,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-21 01:03:52,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-21 01:03:52,184 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rdreg16 [2021-11-21 01:03:52,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rdreg16 [2021-11-21 01:03:52,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:03:52,184 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-21 01:03:52,184 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-21 01:03:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_probe [2021-11-21 01:03:52,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_probe [2021-11-21 01:03:52,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:03:52,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:03:52,186 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 01:03:52,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 01:03:52,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:03:52,186 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:03:52,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:03:52,187 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:03:52,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:03:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_put [2021-11-21 01:03:52,188 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_put [2021-11-21 01:03:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_ks8851_net [2021-11-21 01:03:52,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_ks8851_net [2021-11-21 01:03:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-21 01:03:52,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-21 01:03:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:03:52,190 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:03:52,190 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_write_mac_addr [2021-11-21 01:03:52,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_write_mac_addr [2021-11-21 01:03:52,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 01:03:52,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 01:03:52,190 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_suspend [2021-11-21 01:03:52,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_suspend [2021-11-21 01:03:52,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:03:52,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:03:52,191 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-21 01:03:52,192 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-21 01:03:52,192 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2021-11-21 01:03:52,192 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2021-11-21 01:03:52,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:03:52,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:03:52,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:03:52,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:03:52,193 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_net_open [2021-11-21 01:03:52,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_net_open [2021-11-21 01:03:52,194 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2021-11-21 01:03:52,195 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2021-11-21 01:03:52,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:03:52,198 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:03:52,198 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 01:03:52,198 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 01:03:52,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-21 01:03:52,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-21 01:03:52,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-21 01:03:52,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-21 01:03:52,200 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_set_rx_mode [2021-11-21 01:03:52,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_set_rx_mode [2021-11-21 01:03:52,209 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 01:03:52,209 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 01:03:52,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:03:52,209 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 01:03:52,209 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 01:03:52,210 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_set_powermode [2021-11-21 01:03:52,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_set_powermode [2021-11-21 01:03:52,210 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 01:03:52,210 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 01:03:52,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:03:52,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:03:52,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-21 01:03:52,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-21 01:03:52,211 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 01:03:52,211 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 01:03:52,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:03:52,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:03:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-21 01:03:52,212 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-21 01:03:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 01:03:52,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 01:03:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 01:03:52,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 01:03:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 01:03:52,213 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 01:03:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 01:03:52,213 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 01:03:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rx_1msg [2021-11-21 01:03:52,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rx_1msg [2021-11-21 01:03:52,214 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_get_eeprom_len [2021-11-21 01:03:52,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_get_eeprom_len [2021-11-21 01:03:52,214 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_soft_reset [2021-11-21 01:03:52,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_soft_reset [2021-11-21 01:03:52,214 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 01:03:52,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 01:03:52,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:03:52,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:03:52,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:03:52,215 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rdreg [2021-11-21 01:03:52,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rdreg [2021-11-21 01:03:52,215 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_nway_reset [2021-11-21 01:03:52,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_nway_reset [2021-11-21 01:03:52,216 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2021-11-21 01:03:52,216 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2021-11-21 01:03:52,216 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_remove [2021-11-21 01:03:52,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_remove [2021-11-21 01:03:52,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:03:52,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:03:52,217 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-21 01:03:52,217 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-21 01:03:52,217 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_wrreg16 [2021-11-21 01:03:52,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_wrreg16 [2021-11-21 01:03:52,217 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 01:03:52,217 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 01:03:52,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:03:52,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:03:52,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:03:53,002 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:03:53,005 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:03:54,257 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:03:56,599 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 01:03:56,784 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:03:57,604 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:03:57,605 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 01:03:57,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:03:57 BoogieIcfgContainer [2021-11-21 01:03:57,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:03:57,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:03:57,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:03:57,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:03:57,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:03:47" (1/3) ... [2021-11-21 01:03:57,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2613c200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:03:57, skipping insertion in model container [2021-11-21 01:03:57,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:51" (2/3) ... [2021-11-21 01:03:57,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2613c200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:03:57, skipping insertion in model container [2021-11-21 01:03:57,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:03:57" (3/3) ... [2021-11-21 01:03:57,620 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i [2021-11-21 01:03:57,627 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:03:57,627 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 01:03:57,695 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:03:57,703 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 [2021-11-21 01:03:57,703 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 01:03:57,758 INFO L276 IsEmpty]: Start isEmpty. Operand has 1118 states, 674 states have (on average 1.3293768545994065) internal successors, (896), 687 states have internal predecessors, (896), 366 states have call successors, (366), 78 states have call predecessors, (366), 77 states have return successors, (357), 356 states have call predecessors, (357), 357 states have call successors, (357) [2021-11-21 01:03:57,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-21 01:03:57,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:57,789 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:57,789 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:03:57,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:57,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1867949063, now seen corresponding path program 1 times [2021-11-21 01:03:57,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:57,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525231656] [2021-11-21 01:03:57,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:57,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:58,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-21 01:03:58,585 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:58,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525231656] [2021-11-21 01:03:58,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525231656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:58,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:58,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:03:58,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820086426] [2021-11-21 01:03:58,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:58,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:03:58,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:58,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:03:58,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:03:58,645 INFO L87 Difference]: Start difference. First operand has 1118 states, 674 states have (on average 1.3293768545994065) internal successors, (896), 687 states have internal predecessors, (896), 366 states have call successors, (366), 78 states have call predecessors, (366), 77 states have return successors, (357), 356 states have call predecessors, (357), 357 states have call successors, (357) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-21 01:04:02,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:02,488 INFO L93 Difference]: Finished difference Result 3137 states and 4728 transitions. [2021-11-21 01:04:02,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:04:02,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 191 [2021-11-21 01:04:02,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:02,528 INFO L225 Difference]: With dead ends: 3137 [2021-11-21 01:04:02,528 INFO L226 Difference]: Without dead ends: 2036 [2021-11-21 01:04:02,543 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 [2021-11-21 01:04:02,546 INFO L933 BasicCegarLoop]: 1647 mSDtfsCounter, 1412 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 2956 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:02,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1412 Valid, 2956 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-21 01:04:02,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2021-11-21 01:04:02,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 2017. [2021-11-21 01:04:02,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2017 states, 1219 states have (on average 1.3264971287940934) internal successors, (1617), 1245 states have internal predecessors, (1617), 646 states have call successors, (646), 152 states have call predecessors, (646), 149 states have return successors, (684), 631 states have call predecessors, (684), 642 states have call successors, (684) [2021-11-21 01:04:02,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 2947 transitions. [2021-11-21 01:04:02,816 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 2947 transitions. Word has length 191 [2021-11-21 01:04:02,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:02,818 INFO L470 AbstractCegarLoop]: Abstraction has 2017 states and 2947 transitions. [2021-11-21 01:04:02,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-21 01:04:02,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 2947 transitions. [2021-11-21 01:04:02,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-21 01:04:02,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:02,826 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:02,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:04:02,826 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:04:02,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:02,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1649830536, now seen corresponding path program 1 times [2021-11-21 01:04:02,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:02,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136167343] [2021-11-21 01:04:02,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:02,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:03,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2021-11-21 01:04:03,018 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:03,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136167343] [2021-11-21 01:04:03,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136167343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:03,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:03,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:04:03,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026858788] [2021-11-21 01:04:03,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:03,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:04:03,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:03,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:04:03,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:04:03,023 INFO L87 Difference]: Start difference. First operand 2017 states and 2947 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-21 01:04:06,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:06,078 INFO L93 Difference]: Finished difference Result 5894 states and 8610 transitions. [2021-11-21 01:04:06,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:04:06,079 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 194 [2021-11-21 01:04:06,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:06,129 INFO L225 Difference]: With dead ends: 5894 [2021-11-21 01:04:06,129 INFO L226 Difference]: Without dead ends: 3912 [2021-11-21 01:04:06,145 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 [2021-11-21 01:04:06,147 INFO L933 BasicCegarLoop]: 1608 mSDtfsCounter, 1461 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:06,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1461 Valid, 2864 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-21 01:04:06,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2021-11-21 01:04:06,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3908. [2021-11-21 01:04:06,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3908 states, 2380 states have (on average 1.3256302521008403) internal successors, (3155), 2424 states have internal predecessors, (3155), 1230 states have call successors, (1230), 300 states have call predecessors, (1230), 295 states have return successors, (1310), 1207 states have call predecessors, (1310), 1226 states have call successors, (1310) [2021-11-21 01:04:06,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3908 states to 3908 states and 5695 transitions. [2021-11-21 01:04:06,540 INFO L78 Accepts]: Start accepts. Automaton has 3908 states and 5695 transitions. Word has length 194 [2021-11-21 01:04:06,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:06,542 INFO L470 AbstractCegarLoop]: Abstraction has 3908 states and 5695 transitions. [2021-11-21 01:04:06,542 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-21 01:04:06,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3908 states and 5695 transitions. [2021-11-21 01:04:06,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-21 01:04:06,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:06,551 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:06,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:04:06,552 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:04:06,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:06,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1827929935, now seen corresponding path program 1 times [2021-11-21 01:04:06,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:06,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771396986] [2021-11-21 01:04:06,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:06,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-21 01:04:06,811 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:06,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771396986] [2021-11-21 01:04:06,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771396986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:06,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:06,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:04:06,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027581286] [2021-11-21 01:04:06,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:06,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:04:06,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:06,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:04:06,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:04:06,815 INFO L87 Difference]: Start difference. First operand 3908 states and 5695 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 01:04:09,680 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:04:11,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:11,447 INFO L93 Difference]: Finished difference Result 11218 states and 16269 transitions. [2021-11-21 01:04:11,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:04:11,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 195 [2021-11-21 01:04:11,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:11,525 INFO L225 Difference]: With dead ends: 11218 [2021-11-21 01:04:11,526 INFO L226 Difference]: Without dead ends: 7345 [2021-11-21 01:04:11,555 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 [2021-11-21 01:04:11,563 INFO L933 BasicCegarLoop]: 1580 mSDtfsCounter, 1320 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:11,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1320 Valid, 2820 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-21 01:04:11,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7345 states. [2021-11-21 01:04:12,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7345 to 7320. [2021-11-21 01:04:12,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7320 states, 4424 states have (on average 1.3049276672694394) internal successors, (5773), 4518 states have internal predecessors, (5773), 2308 states have call successors, (2308), 594 states have call predecessors, (2308), 585 states have return successors, (2408), 2255 states have call predecessors, (2408), 2304 states have call successors, (2408) [2021-11-21 01:04:12,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7320 states to 7320 states and 10489 transitions. [2021-11-21 01:04:12,166 INFO L78 Accepts]: Start accepts. Automaton has 7320 states and 10489 transitions. Word has length 195 [2021-11-21 01:04:12,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:12,169 INFO L470 AbstractCegarLoop]: Abstraction has 7320 states and 10489 transitions. [2021-11-21 01:04:12,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 01:04:12,169 INFO L276 IsEmpty]: Start isEmpty. Operand 7320 states and 10489 transitions. [2021-11-21 01:04:12,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-21 01:04:12,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:12,176 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:12,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:04:12,177 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:04:12,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:12,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1043345255, now seen corresponding path program 1 times [2021-11-21 01:04:12,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:12,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563873334] [2021-11-21 01:04:12,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:12,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:12,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-21 01:04:12,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:12,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563873334] [2021-11-21 01:04:12,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563873334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:12,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:12,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:04:12,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204867145] [2021-11-21 01:04:12,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:12,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:04:12,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:12,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:04:12,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:04:12,454 INFO L87 Difference]: Start difference. First operand 7320 states and 10489 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 01:04:17,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:17,102 INFO L93 Difference]: Finished difference Result 17654 states and 25223 transitions. [2021-11-21 01:04:17,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:04:17,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 196 [2021-11-21 01:04:17,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:17,208 INFO L225 Difference]: With dead ends: 17654 [2021-11-21 01:04:17,208 INFO L226 Difference]: Without dead ends: 10369 [2021-11-21 01:04:17,259 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 [2021-11-21 01:04:17,264 INFO L933 BasicCegarLoop]: 1610 mSDtfsCounter, 1414 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:17,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1414 Valid, 2877 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-21 01:04:17,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10369 states. [2021-11-21 01:04:18,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10369 to 10344. [2021-11-21 01:04:18,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10344 states, 6230 states have (on average 1.2906902086677368) internal successors, (8041), 6380 states have internal predecessors, (8041), 3248 states have call successors, (3248), 876 states have call predecessors, (3248), 863 states have return successors, (3392), 3155 states have call predecessors, (3392), 3244 states have call successors, (3392) [2021-11-21 01:04:18,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10344 states to 10344 states and 14681 transitions. [2021-11-21 01:04:18,124 INFO L78 Accepts]: Start accepts. Automaton has 10344 states and 14681 transitions. Word has length 196 [2021-11-21 01:04:18,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:18,126 INFO L470 AbstractCegarLoop]: Abstraction has 10344 states and 14681 transitions. [2021-11-21 01:04:18,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 01:04:18,127 INFO L276 IsEmpty]: Start isEmpty. Operand 10344 states and 14681 transitions. [2021-11-21 01:04:18,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-21 01:04:18,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:18,134 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:18,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:04:18,135 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:04:18,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:18,137 INFO L85 PathProgramCache]: Analyzing trace with hash 711528274, now seen corresponding path program 1 times [2021-11-21 01:04:18,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:18,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127287983] [2021-11-21 01:04:18,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:18,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:18,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2021-11-21 01:04:18,349 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:18,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127287983] [2021-11-21 01:04:18,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127287983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:18,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:18,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:04:18,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702065009] [2021-11-21 01:04:18,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:18,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:04:18,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:18,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:04:18,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:04:18,353 INFO L87 Difference]: Start difference. First operand 10344 states and 14681 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-21 01:04:21,946 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:04:23,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:23,384 INFO L93 Difference]: Finished difference Result 27454 states and 38947 transitions. [2021-11-21 01:04:23,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:04:23,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 219 [2021-11-21 01:04:23,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:23,527 INFO L225 Difference]: With dead ends: 27454 [2021-11-21 01:04:23,528 INFO L226 Difference]: Without dead ends: 17145 [2021-11-21 01:04:23,589 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 [2021-11-21 01:04:23,591 INFO L933 BasicCegarLoop]: 1658 mSDtfsCounter, 1464 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:23,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1464 Valid, 2930 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-21 01:04:23,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17145 states. [2021-11-21 01:04:24,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17145 to 17114. [2021-11-21 01:04:24,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17114 states, 10344 states have (on average 1.2876063418406807) internal successors, (13319), 10606 states have internal predecessors, (13319), 5314 states have call successors, (5314), 1482 states have call predecessors, (5314), 1453 states have return successors, (5546), 5139 states have call predecessors, (5546), 5310 states have call successors, (5546) [2021-11-21 01:04:24,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17114 states to 17114 states and 24179 transitions. [2021-11-21 01:04:24,632 INFO L78 Accepts]: Start accepts. Automaton has 17114 states and 24179 transitions. Word has length 219 [2021-11-21 01:04:24,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:24,636 INFO L470 AbstractCegarLoop]: Abstraction has 17114 states and 24179 transitions. [2021-11-21 01:04:24,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-21 01:04:24,637 INFO L276 IsEmpty]: Start isEmpty. Operand 17114 states and 24179 transitions. [2021-11-21 01:04:24,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-21 01:04:24,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:24,642 INFO L514 BasicCegarLoop]: trace histogram [19, 17, 17, 17, 17, 17, 17, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:24,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:04:24,642 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:04:24,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:24,643 INFO L85 PathProgramCache]: Analyzing trace with hash -511341333, now seen corresponding path program 1 times [2021-11-21 01:04:24,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:24,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565805208] [2021-11-21 01:04:24,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:24,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:24,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2021-11-21 01:04:24,803 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:24,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565805208] [2021-11-21 01:04:24,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565805208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:24,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:24,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:04:24,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925248248] [2021-11-21 01:04:24,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:24,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:04:24,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:24,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:04:24,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:04:24,807 INFO L87 Difference]: Start difference. First operand 17114 states and 24179 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-21 01:04:28,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:28,318 INFO L93 Difference]: Finished difference Result 43553 states and 61621 transitions. [2021-11-21 01:04:28,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:04:28,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 215 [2021-11-21 01:04:28,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:28,513 INFO L225 Difference]: With dead ends: 43553 [2021-11-21 01:04:28,514 INFO L226 Difference]: Without dead ends: 26474 [2021-11-21 01:04:28,595 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 [2021-11-21 01:04:28,596 INFO L933 BasicCegarLoop]: 1899 mSDtfsCounter, 1429 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:28,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1429 Valid, 3167 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-21 01:04:28,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26474 states. [2021-11-21 01:04:30,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26474 to 26425. [2021-11-21 01:04:30,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26425 states, 16066 states have (on average 1.2873770695879496) internal successors, (20683), 16518 states have internal predecessors, (20683), 8124 states have call successors, (8124), 2279 states have call predecessors, (8124), 2232 states have return successors, (8468), 7803 states have call predecessors, (8468), 8120 states have call successors, (8468) [2021-11-21 01:04:30,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26425 states to 26425 states and 37275 transitions. [2021-11-21 01:04:30,244 INFO L78 Accepts]: Start accepts. Automaton has 26425 states and 37275 transitions. Word has length 215 [2021-11-21 01:04:30,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:30,245 INFO L470 AbstractCegarLoop]: Abstraction has 26425 states and 37275 transitions. [2021-11-21 01:04:30,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-21 01:04:30,246 INFO L276 IsEmpty]: Start isEmpty. Operand 26425 states and 37275 transitions. [2021-11-21 01:04:30,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-21 01:04:30,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:30,252 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:30,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:04:30,253 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:04:30,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:30,254 INFO L85 PathProgramCache]: Analyzing trace with hash 404931559, now seen corresponding path program 1 times [2021-11-21 01:04:30,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:30,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599063140] [2021-11-21 01:04:30,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:30,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:30,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2021-11-21 01:04:30,637 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:30,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599063140] [2021-11-21 01:04:30,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599063140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:30,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:30,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:04:30,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022193970] [2021-11-21 01:04:30,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:30,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:04:30,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:30,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:04:30,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:04:30,640 INFO L87 Difference]: Start difference. First operand 26425 states and 37275 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-21 01:04:35,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:35,359 INFO L93 Difference]: Finished difference Result 26431 states and 37280 transitions. [2021-11-21 01:04:35,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:04:35,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 238 [2021-11-21 01:04:35,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:35,646 INFO L225 Difference]: With dead ends: 26431 [2021-11-21 01:04:35,646 INFO L226 Difference]: Without dead ends: 26429 [2021-11-21 01:04:35,657 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 [2021-11-21 01:04:35,658 INFO L933 BasicCegarLoop]: 1290 mSDtfsCounter, 1515 mSDsluCounter, 3135 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 3865 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:35,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1518 Valid, 3865 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-21 01:04:35,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26429 states. [2021-11-21 01:04:36,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26429 to 26429. [2021-11-21 01:04:36,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26429 states, 16069 states have (on average 1.287323417760906) internal successors, (20686), 16521 states have internal predecessors, (20686), 8124 states have call successors, (8124), 2280 states have call predecessors, (8124), 2233 states have return successors, (8468), 7803 states have call predecessors, (8468), 8120 states have call successors, (8468) [2021-11-21 01:04:37,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26429 states to 26429 states and 37278 transitions. [2021-11-21 01:04:37,054 INFO L78 Accepts]: Start accepts. Automaton has 26429 states and 37278 transitions. Word has length 238 [2021-11-21 01:04:37,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:37,055 INFO L470 AbstractCegarLoop]: Abstraction has 26429 states and 37278 transitions. [2021-11-21 01:04:37,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-21 01:04:37,056 INFO L276 IsEmpty]: Start isEmpty. Operand 26429 states and 37278 transitions. [2021-11-21 01:04:37,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-21 01:04:37,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:37,062 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:37,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:04:37,062 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:04:37,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:37,063 INFO L85 PathProgramCache]: Analyzing trace with hash 479344611, now seen corresponding path program 1 times [2021-11-21 01:04:37,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:37,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390822504] [2021-11-21 01:04:37,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:37,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:37,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1271 trivial. 0 not checked. [2021-11-21 01:04:37,389 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:37,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390822504] [2021-11-21 01:04:37,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390822504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:37,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:37,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:04:37,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536598943] [2021-11-21 01:04:37,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:37,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:04:37,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:37,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:04:37,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:04:37,392 INFO L87 Difference]: Start difference. First operand 26429 states and 37278 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-21 01:04:43,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:43,248 INFO L93 Difference]: Finished difference Result 26435 states and 37283 transitions. [2021-11-21 01:04:43,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:04:43,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 244 [2021-11-21 01:04:43,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:43,421 INFO L225 Difference]: With dead ends: 26435 [2021-11-21 01:04:43,421 INFO L226 Difference]: Without dead ends: 26433 [2021-11-21 01:04:43,436 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 [2021-11-21 01:04:43,437 INFO L933 BasicCegarLoop]: 1293 mSDtfsCounter, 1510 mSDsluCounter, 3135 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 3868 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:43,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1512 Valid, 3868 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-21 01:04:43,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26433 states. [2021-11-21 01:04:44,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26433 to 26433. [2021-11-21 01:04:44,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26433 states, 16072 states have (on average 1.2872697859631657) internal successors, (20689), 16524 states have internal predecessors, (20689), 8124 states have call successors, (8124), 2281 states have call predecessors, (8124), 2234 states have return successors, (8468), 7803 states have call predecessors, (8468), 8120 states have call successors, (8468) [2021-11-21 01:04:45,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26433 states to 26433 states and 37281 transitions. [2021-11-21 01:04:45,108 INFO L78 Accepts]: Start accepts. Automaton has 26433 states and 37281 transitions. Word has length 244 [2021-11-21 01:04:45,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:45,109 INFO L470 AbstractCegarLoop]: Abstraction has 26433 states and 37281 transitions. [2021-11-21 01:04:45,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-21 01:04:45,109 INFO L276 IsEmpty]: Start isEmpty. Operand 26433 states and 37281 transitions. [2021-11-21 01:04:45,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-21 01:04:45,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:45,116 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:45,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:04:45,117 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:04:45,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:45,118 INFO L85 PathProgramCache]: Analyzing trace with hash -347072595, now seen corresponding path program 1 times [2021-11-21 01:04:45,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:45,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790559320] [2021-11-21 01:04:45,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:45,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:45,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1279 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1275 trivial. 0 not checked. [2021-11-21 01:04:45,436 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:45,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790559320] [2021-11-21 01:04:45,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790559320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:45,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:45,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:04:45,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663722045] [2021-11-21 01:04:45,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:45,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:04:45,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:45,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:04:45,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:04:45,441 INFO L87 Difference]: Start difference. First operand 26433 states and 37281 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 01:04:49,488 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:04:52,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:52,650 INFO L93 Difference]: Finished difference Result 28558 states and 39474 transitions. [2021-11-21 01:04:52,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:04:52,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 249 [2021-11-21 01:04:52,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:52,972 INFO L225 Difference]: With dead ends: 28558 [2021-11-21 01:04:52,973 INFO L226 Difference]: Without dead ends: 28554 [2021-11-21 01:04:52,986 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 [2021-11-21 01:04:52,990 INFO L933 BasicCegarLoop]: 1317 mSDtfsCounter, 1229 mSDsluCounter, 3547 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 4249 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:52,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1230 Valid, 4249 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-11-21 01:04:53,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28554 states. [2021-11-21 01:04:54,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28554 to 28554. [2021-11-21 01:04:54,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28554 states, 17191 states have (on average 1.2770635797801175) internal successors, (21954), 17642 states have internal predecessors, (21954), 8586 states have call successors, (8586), 2822 states have call predecessors, (8586), 2774 states have return successors, (8930), 8265 states have call predecessors, (8930), 8582 states have call successors, (8930) [2021-11-21 01:04:54,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28554 states to 28554 states and 39470 transitions. [2021-11-21 01:04:54,387 INFO L78 Accepts]: Start accepts. Automaton has 28554 states and 39470 transitions. Word has length 249 [2021-11-21 01:04:54,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:54,389 INFO L470 AbstractCegarLoop]: Abstraction has 28554 states and 39470 transitions. [2021-11-21 01:04:54,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 01:04:54,389 INFO L276 IsEmpty]: Start isEmpty. Operand 28554 states and 39470 transitions. [2021-11-21 01:04:54,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-21 01:04:54,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:54,398 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:54,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:04:54,399 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:04:54,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:54,400 INFO L85 PathProgramCache]: Analyzing trace with hash -535916746, now seen corresponding path program 1 times [2021-11-21 01:04:54,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:54,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131439515] [2021-11-21 01:04:54,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:54,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:54,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1277 trivial. 0 not checked. [2021-11-21 01:04:54,922 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:54,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131439515] [2021-11-21 01:04:54,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131439515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:54,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:54,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:04:54,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291527000] [2021-11-21 01:04:54,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:54,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:04:54,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:54,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:04:54,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:04:54,925 INFO L87 Difference]: Start difference. First operand 28554 states and 39470 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-21 01:05:00,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:05:00,923 INFO L93 Difference]: Finished difference Result 28554 states and 39470 transitions. [2021-11-21 01:05:00,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:05:00,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 252 [2021-11-21 01:05:00,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:05:01,058 INFO L225 Difference]: With dead ends: 28554 [2021-11-21 01:05:01,058 INFO L226 Difference]: Without dead ends: 28275 [2021-11-21 01:05:01,072 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 [2021-11-21 01:05:01,073 INFO L933 BasicCegarLoop]: 1291 mSDtfsCounter, 1507 mSDsluCounter, 3134 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 3865 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:05:01,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 3865 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-21 01:05:01,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28275 states. [2021-11-21 01:05:02,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28275 to 28275. [2021-11-21 01:05:02,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28275 states, 17131 states have (on average 1.2724300974840932) internal successors, (21798), 17486 states have internal predecessors, (21798), 8387 states have call successors, (8387), 2785 states have call predecessors, (8387), 2755 states have return successors, (8735), 8179 states have call predecessors, (8735), 8387 states have call successors, (8735) [2021-11-21 01:05:02,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28275 states to 28275 states and 38920 transitions. [2021-11-21 01:05:02,912 INFO L78 Accepts]: Start accepts. Automaton has 28275 states and 38920 transitions. Word has length 252 [2021-11-21 01:05:02,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:05:02,914 INFO L470 AbstractCegarLoop]: Abstraction has 28275 states and 38920 transitions. [2021-11-21 01:05:02,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-21 01:05:02,914 INFO L276 IsEmpty]: Start isEmpty. Operand 28275 states and 38920 transitions. [2021-11-21 01:05:02,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-21 01:05:02,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:05:02,927 INFO L514 BasicCegarLoop]: trace histogram [22, 17, 17, 17, 17, 17, 17, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:05:02,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:05:02,927 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:05:02,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:05:02,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1976010743, now seen corresponding path program 1 times [2021-11-21 01:05:02,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:05:02,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519303486] [2021-11-21 01:05:02,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:05:02,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:05:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:05:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1301 trivial. 0 not checked. [2021-11-21 01:05:03,165 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:05:03,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519303486] [2021-11-21 01:05:03,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519303486] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:05:03,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882955221] [2021-11-21 01:05:03,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:05:03,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:05:03,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa71f83a-7950-4d42-820f-cfc320848baa/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:05:03,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa71f83a-7950-4d42-820f-cfc320848baa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:05:03,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa71f83a-7950-4d42-820f-cfc320848baa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:05:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:05:04,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 2547 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:05:04,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:05:05,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2021-11-21 01:05:05,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:05:05,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882955221] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:05:05,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:05:05,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 01:05:05,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428075836] [2021-11-21 01:05:05,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:05:05,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:05:05,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:05:05,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:05:05,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:05:05,132 INFO L87 Difference]: Start difference. First operand 28275 states and 38920 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-21 01:05:09,991 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:05:11,782 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:05:13,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:05:13,193 INFO L93 Difference]: Finished difference Result 69604 states and 95876 transitions. [2021-11-21 01:05:13,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:05:13,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 257 [2021-11-21 01:05:13,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:05:13,644 INFO L225 Difference]: With dead ends: 69604 [2021-11-21 01:05:13,645 INFO L226 Difference]: Without dead ends: 41486 [2021-11-21 01:05:13,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:05:13,779 INFO L933 BasicCegarLoop]: 1684 mSDtfsCounter, 1403 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:05:13,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1403 Valid, 2909 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-11-21 01:05:13,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41486 states. [2021-11-21 01:05:16,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41486 to 41450. [2021-11-21 01:05:16,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41450 states, 25121 states have (on average 1.2722821543728355) internal successors, (31961), 25662 states have internal predecessors, (31961), 12263 states have call successors, (12263), 4108 states have call predecessors, (12263), 4064 states have return successors, (12775), 11939 states have call predecessors, (12775), 12263 states have call successors, (12775) [2021-11-21 01:05:16,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41450 states to 41450 states and 56999 transitions. [2021-11-21 01:05:16,467 INFO L78 Accepts]: Start accepts. Automaton has 41450 states and 56999 transitions. Word has length 257 [2021-11-21 01:05:16,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:05:16,469 INFO L470 AbstractCegarLoop]: Abstraction has 41450 states and 56999 transitions. [2021-11-21 01:05:16,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-21 01:05:16,469 INFO L276 IsEmpty]: Start isEmpty. Operand 41450 states and 56999 transitions. [2021-11-21 01:05:16,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-11-21 01:05:16,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:05:16,485 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:05:16,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa71f83a-7950-4d42-820f-cfc320848baa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-21 01:05:16,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa71f83a-7950-4d42-820f-cfc320848baa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:05:16,698 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:05:16,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:05:16,699 INFO L85 PathProgramCache]: Analyzing trace with hash 991211405, now seen corresponding path program 1 times [2021-11-21 01:05:16,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:05:16,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524058704] [2021-11-21 01:05:16,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:05:16,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:05:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:05:16,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1268 trivial. 0 not checked. [2021-11-21 01:05:16,960 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:05:16,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524058704] [2021-11-21 01:05:16,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524058704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:05:16,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:05:16,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:05:16,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885887197] [2021-11-21 01:05:16,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:05:16,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:05:16,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:05:16,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:05:16,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:05:16,964 INFO L87 Difference]: Start difference. First operand 41450 states and 56999 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-21 01:05:23,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:05:23,315 INFO L93 Difference]: Finished difference Result 102394 states and 140909 transitions. [2021-11-21 01:05:23,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:05:23,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 268 [2021-11-21 01:05:23,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:05:23,692 INFO L225 Difference]: With dead ends: 102394 [2021-11-21 01:05:23,692 INFO L226 Difference]: Without dead ends: 61101 [2021-11-21 01:05:23,884 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 [2021-11-21 01:05:23,886 INFO L933 BasicCegarLoop]: 1748 mSDtfsCounter, 1429 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 2989 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:05:23,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1429 Valid, 2989 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-21 01:05:23,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61101 states. [2021-11-21 01:05:26,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61101 to 61073. [2021-11-21 01:05:27,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61073 states, 37087 states have (on average 1.2718472780219483) internal successors, (47169), 37894 states have internal predecessors, (47169), 17974 states have call successors, (17974), 6074 states have call predecessors, (17974), 6010 states have return successors, (18730), 17488 states have call predecessors, (18730), 17974 states have call successors, (18730) [2021-11-21 01:05:27,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61073 states to 61073 states and 83873 transitions. [2021-11-21 01:05:27,301 INFO L78 Accepts]: Start accepts. Automaton has 61073 states and 83873 transitions. Word has length 268 [2021-11-21 01:05:27,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:05:27,302 INFO L470 AbstractCegarLoop]: Abstraction has 61073 states and 83873 transitions. [2021-11-21 01:05:27,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-21 01:05:27,303 INFO L276 IsEmpty]: Start isEmpty. Operand 61073 states and 83873 transitions. [2021-11-21 01:05:27,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-11-21 01:05:27,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:05:27,321 INFO L514 BasicCegarLoop]: trace histogram [23, 17, 17, 17, 17, 17, 17, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:05:27,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 01:05:27,322 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:05:27,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:05:27,322 INFO L85 PathProgramCache]: Analyzing trace with hash 609345488, now seen corresponding path program 1 times [2021-11-21 01:05:27,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:05:27,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67339004] [2021-11-21 01:05:27,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:05:27,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:05:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:05:27,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1360 trivial. 0 not checked. [2021-11-21 01:05:27,500 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:05:27,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67339004] [2021-11-21 01:05:27,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67339004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:05:27,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:05:27,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:05:27,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445807264] [2021-11-21 01:05:27,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:05:27,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:05:27,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:05:27,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:05:27,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:05:27,503 INFO L87 Difference]: Start difference. First operand 61073 states and 83873 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-21 01:05:37,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:05:37,663 INFO L93 Difference]: Finished difference Result 149893 states and 205987 transitions. [2021-11-21 01:05:37,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:05:37,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 275 [2021-11-21 01:05:37,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:05:38,418 INFO L225 Difference]: With dead ends: 149893 [2021-11-21 01:05:38,420 INFO L226 Difference]: Without dead ends: 88977 [2021-11-21 01:05:38,612 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 [2021-11-21 01:05:38,613 INFO L933 BasicCegarLoop]: 2398 mSDtfsCounter, 1396 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 3634 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:05:38,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1396 Valid, 3634 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-11-21 01:05:38,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88977 states. [2021-11-21 01:05:44,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88977 to 88901. [2021-11-21 01:05:44,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88901 states, 54103 states have (on average 1.2708537419366763) internal successors, (68757), 55308 states have internal predecessors, (68757), 26036 states have call successors, (26036), 8852 states have call predecessors, (26036), 8760 states have return successors, (27128), 25304 states have call predecessors, (27128), 26036 states have call successors, (27128) [2021-11-21 01:05:44,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88901 states to 88901 states and 121921 transitions. [2021-11-21 01:05:44,714 INFO L78 Accepts]: Start accepts. Automaton has 88901 states and 121921 transitions. Word has length 275 [2021-11-21 01:05:44,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:05:44,716 INFO L470 AbstractCegarLoop]: Abstraction has 88901 states and 121921 transitions. [2021-11-21 01:05:44,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-21 01:05:44,716 INFO L276 IsEmpty]: Start isEmpty. Operand 88901 states and 121921 transitions. [2021-11-21 01:05:44,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-11-21 01:05:44,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:05:44,746 INFO L514 BasicCegarLoop]: trace histogram [22, 17, 17, 17, 17, 17, 17, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:05:44,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 01:05:44,747 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:05:44,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:05:44,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1182234025, now seen corresponding path program 1 times [2021-11-21 01:05:44,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:05:44,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61877830] [2021-11-21 01:05:44,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:05:44,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:05:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:05:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2021-11-21 01:05:44,997 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:05:44,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61877830] [2021-11-21 01:05:44,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61877830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:05:44,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:05:44,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:05:44,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453863150] [2021-11-21 01:05:44,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:05:45,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:05:45,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:05:45,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:05:45,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:05:45,003 INFO L87 Difference]: Start difference. First operand 88901 states and 121921 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30)