./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fdf53e-b54b-4d92-a962-13a451976cb4/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fdf53e-b54b-4d92-a962-13a451976cb4/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fdf53e-b54b-4d92-a962-13a451976cb4/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fdf53e-b54b-4d92-a962-13a451976cb4/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fdf53e-b54b-4d92-a962-13a451976cb4/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fdf53e-b54b-4d92-a962-13a451976cb4/bin/utaipan-EQgc7hIp5V --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 d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:24:28,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:24:28,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:24:28,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:24:28,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:24:28,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:24:28,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:24:28,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:24:28,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:24:28,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:24:28,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:24:28,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:24:28,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:24:28,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:24:28,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:24:28,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:24:28,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:24:28,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:24:28,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:24:28,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:24:28,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:24:28,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:24:28,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:24:28,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:24:28,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:24:28,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:24:28,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:24:28,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:24:28,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:24:28,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:24:28,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:24:28,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:24:28,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:24:28,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:24:28,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:24:28,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:24:28,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:24:28,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:24:28,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:24:28,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:24:28,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:24:28,722 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fdf53e-b54b-4d92-a962-13a451976cb4/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:24:28,749 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:24:28,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:24:28,750 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:24:28,750 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:24:28,751 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:24:28,751 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:24:28,751 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:24:28,751 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:24:28,752 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:24:28,752 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:24:28,752 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:24:28,752 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:24:28,753 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:24:28,753 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:24:28,753 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:24:28,753 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:24:28,753 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:24:28,754 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:24:28,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:24:28,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:24:28,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:24:28,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:24:28,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:24:28,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:24:28,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:24:28,756 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:24:28,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:24:28,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:24:28,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:24:28,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:24:28,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:24:28,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:24:28,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:24:28,758 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:24:28,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:24:28,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:24:28,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:24:28,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:24:28,759 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_23fdf53e-b54b-4d92-a962-13a451976cb4/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fdf53e-b54b-4d92-a962-13a451976cb4/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 [2021-11-23 02:24:29,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:24:29,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:24:29,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:24:29,048 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:24:29,048 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:24:29,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fdf53e-b54b-4d92-a962-13a451976cb4/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2021-11-23 02:24:29,136 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fdf53e-b54b-4d92-a962-13a451976cb4/bin/utaipan-EQgc7hIp5V/data/cae91b179/1ee02cb444514007836080fd0830f0e9/FLAG9eb3b4e58 [2021-11-23 02:24:30,146 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:24:30,148 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fdf53e-b54b-4d92-a962-13a451976cb4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2021-11-23 02:24:30,230 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fdf53e-b54b-4d92-a962-13a451976cb4/bin/utaipan-EQgc7hIp5V/data/cae91b179/1ee02cb444514007836080fd0830f0e9/FLAG9eb3b4e58 [2021-11-23 02:24:30,519 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fdf53e-b54b-4d92-a962-13a451976cb4/bin/utaipan-EQgc7hIp5V/data/cae91b179/1ee02cb444514007836080fd0830f0e9 [2021-11-23 02:24:30,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:24:30,525 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:24:30,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:24:30,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:24:30,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:24:30,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:24:30" (1/1) ... [2021-11-23 02:24:30,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638499d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:30, skipping insertion in model container [2021-11-23 02:24:30,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:24:30" (1/1) ... [2021-11-23 02:24:30,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:24:30,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:24:34,085 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_23fdf53e-b54b-4d92-a962-13a451976cb4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349228,349241] [2021-11-23 02:24:34,088 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_23fdf53e-b54b-4d92-a962-13a451976cb4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349397,349410] [2021-11-23 02:24:34,089 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_23fdf53e-b54b-4d92-a962-13a451976cb4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349564,349577] [2021-11-23 02:24:34,098 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_23fdf53e-b54b-4d92-a962-13a451976cb4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349732,349745] [2021-11-23 02:24:34,137 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:24:34,230 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:24:34,723 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_23fdf53e-b54b-4d92-a962-13a451976cb4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349228,349241] [2021-11-23 02:24:34,724 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_23fdf53e-b54b-4d92-a962-13a451976cb4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349397,349410] [2021-11-23 02:24:34,725 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_23fdf53e-b54b-4d92-a962-13a451976cb4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349564,349577] [2021-11-23 02:24:34,725 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_23fdf53e-b54b-4d92-a962-13a451976cb4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349732,349745] [2021-11-23 02:24:34,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:24:35,030 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:24:35,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:35 WrapperNode [2021-11-23 02:24:35,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:24:35,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:24:35,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:24:35,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:24:35,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:35" (1/1) ... [2021-11-23 02:24:35,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:35" (1/1) ... [2021-11-23 02:24:35,510 INFO L137 Inliner]: procedures = 470, calls = 2162, calls flagged for inlining = 234, calls inlined = 217, statements flattened = 5446 [2021-11-23 02:24:35,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:24:35,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:24:35,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:24:35,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:24:35,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:35" (1/1) ... [2021-11-23 02:24:35,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:35" (1/1) ... [2021-11-23 02:24:35,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:35" (1/1) ... [2021-11-23 02:24:35,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:35" (1/1) ... [2021-11-23 02:24:35,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:35" (1/1) ... [2021-11-23 02:24:35,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:35" (1/1) ... [2021-11-23 02:24:35,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:35" (1/1) ... [2021-11-23 02:24:35,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:24:35,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:24:35,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:24:35,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:24:35,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:35" (1/1) ... [2021-11-23 02:24:35,892 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:24:35,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fdf53e-b54b-4d92-a962-13a451976cb4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:24:35,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fdf53e-b54b-4d92-a962-13a451976cb4/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:24:35,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fdf53e-b54b-4d92-a962-13a451976cb4/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:24:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure check_if_running [2021-11-23 02:24:35,967 INFO L138 BoogieDeclarations]: Found implementation of procedure check_if_running [2021-11-23 02:24:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-23 02:24:35,968 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-23 02:24:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-23 02:24:35,968 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-23 02:24:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:24:35,968 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:24:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-23 02:24:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-23 02:24:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-23 02:24:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-23 02:24:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:24:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:24:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:24:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:24:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 02:24:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 02:24:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-23 02:24:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-23 02:24:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-23 02:24:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-23 02:24:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure reset_tx [2021-11-23 02:24:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_tx [2021-11-23 02:24:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_66 [2021-11-23 02:24:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_66 [2021-11-23 02:24:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_76 [2021-11-23 02:24:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_76 [2021-11-23 02:24:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-23 02:24:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-23 02:24:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 02:24:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 02:24:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-23 02:24:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-23 02:24:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 02:24:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 02:24:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-23 02:24:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-23 02:24:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-23 02:24:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-23 02:24:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-23 02:24:35,973 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-23 02:24:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 02:24:35,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 02:24:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 02:24:35,973 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 02:24:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:24:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_69 [2021-11-23 02:24:35,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_69 [2021-11-23 02:24:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2021-11-23 02:24:35,974 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2021-11-23 02:24:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-23 02:24:35,974 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-23 02:24:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 02:24:35,974 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 02:24:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:24:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 02:24:35,974 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 02:24:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-23 02:24:35,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-23 02:24:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-23 02:24:35,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-23 02:24:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:24:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 02:24:35,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 02:24:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:24:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-23 02:24:35,976 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-23 02:24:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 02:24:35,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 02:24:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:24:35,976 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:24:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-23 02:24:35,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-23 02:24:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure check_duplex [2021-11-23 02:24:35,977 INFO L138 BoogieDeclarations]: Found implementation of procedure check_duplex [2021-11-23 02:24:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 02:24:35,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 02:24:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-11-23 02:24:35,977 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-11-23 02:24:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 02:24:35,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 02:24:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure tx_timeout [2021-11-23 02:24:35,978 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_timeout [2021-11-23 02:24:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_resume [2021-11-23 02:24:35,978 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_resume [2021-11-23 02:24:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 02:24:35,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 02:24:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:24:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-23 02:24:35,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-23 02:24:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 02:24:35,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 02:24:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-23 02:24:35,979 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-23 02:24:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:24:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 02:24:35,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 02:24:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 02:24:35,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 02:24:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:24:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-23 02:24:35,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-23 02:24:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:24:35,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:24:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-23 02:24:35,980 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-23 02:24:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-23 02:24:35,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-23 02:24:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-23 02:24:35,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-23 02:24:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-23 02:24:35,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-23 02:24:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:24:35,981 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:24:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-23 02:24:35,981 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-23 02:24:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-23 02:24:35,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-23 02:24:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure __set_mac_addr [2021-11-23 02:24:35,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_mac_addr [2021-11-23 02:24:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-23 02:24:35,982 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-23 02:24:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:24:35,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:24:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_sundance_exit_14_2 [2021-11-23 02:24:35,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_sundance_exit_14_2 [2021-11-23 02:24:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:24:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:24:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:24:35,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:24:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_close [2021-11-23 02:24:35,983 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_close [2021-11-23 02:24:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:24:35,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:24:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure get_stats [2021-11-23 02:24:35,983 INFO L138 BoogieDeclarations]: Found implementation of procedure get_stats [2021-11-23 02:24:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_poll_controller [2021-11-23 02:24:35,984 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_poll_controller [2021-11-23 02:24:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-23 02:24:35,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-23 02:24:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure nway_reset [2021-11-23 02:24:35,984 INFO L138 BoogieDeclarations]: Found implementation of procedure nway_reset [2021-11-23 02:24:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_netdev_private [2021-11-23 02:24:35,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_netdev_private [2021-11-23 02:24:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:24:35,985 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:24:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-23 02:24:35,985 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-23 02:24:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-23 02:24:35,985 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-23 02:24:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-23 02:24:35,985 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-23 02:24:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-23 02:24:35,986 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-23 02:24:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:24:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-23 02:24:35,986 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-23 02:24:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_75 [2021-11-23 02:24:35,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_75 [2021-11-23 02:24:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:24:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-23 02:24:35,987 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-23 02:24:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-23 02:24:35,987 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-23 02:24:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:24:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure intr_handler [2021-11-23 02:24:35,987 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_handler [2021-11-23 02:24:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-23 02:24:35,987 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-23 02:24:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 02:24:35,988 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 02:24:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_netdev_private [2021-11-23 02:24:35,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_netdev_private [2021-11-23 02:24:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 02:24:35,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 02:24:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-23 02:24:35,988 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-23 02:24:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2021-11-23 02:24:35,989 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2021-11-23 02:24:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_open [2021-11-23 02:24:35,989 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_open [2021-11-23 02:24:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_reset [2021-11-23 02:24:35,989 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_reset [2021-11-23 02:24:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-23 02:24:35,989 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-23 02:24:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-23 02:24:35,989 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-23 02:24:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-23 02:24:35,990 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-23 02:24:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-23 02:24:35,990 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-23 02:24:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 02:24:35,990 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 02:24:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_remove1 [2021-11-23 02:24:35,990 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_remove1 [2021-11-23 02:24:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_70 [2021-11-23 02:24:35,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_70 [2021-11-23 02:24:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:24:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:24:35,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:24:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-23 02:24:35,991 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-23 02:24:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure refill_rx [2021-11-23 02:24:35,991 INFO L138 BoogieDeclarations]: Found implementation of procedure refill_rx [2021-11-23 02:24:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 02:24:35,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 02:24:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-23 02:24:35,992 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-23 02:24:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-23 02:24:35,992 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-23 02:24:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-23 02:24:35,992 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-23 02:24:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:24:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 02:24:35,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 02:24:35,993 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-23 02:24:35,993 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-23 02:24:36,908 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:24:36,912 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:24:37,395 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:25:48,345 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 02:25:48,475 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:25:50,548 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:25:50,548 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 02:25:50,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:50 BoogieIcfgContainer [2021-11-23 02:25:50,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:25:50,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:25:50,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:25:50,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:25:50,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:24:30" (1/3) ... [2021-11-23 02:25:50,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6438dc22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:25:50, skipping insertion in model container [2021-11-23 02:25:50,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:35" (2/3) ... [2021-11-23 02:25:50,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6438dc22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:25:50, skipping insertion in model container [2021-11-23 02:25:50,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:50" (3/3) ... [2021-11-23 02:25:50,566 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2021-11-23 02:25:50,580 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:25:50,581 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-23 02:25:50,654 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:25:50,675 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 [2021-11-23 02:25:50,676 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 02:25:50,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 1433 states, 823 states have (on average 1.2843256379100851) internal successors, (1057), 861 states have internal predecessors, (1057), 511 states have call successors, (511), 101 states have call predecessors, (511), 100 states have return successors, (505), 498 states have call predecessors, (505), 505 states have call successors, (505) [2021-11-23 02:25:50,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 02:25:50,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:50,781 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:50,782 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:25:50,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:50,789 INFO L85 PathProgramCache]: Analyzing trace with hash -147284711, now seen corresponding path program 1 times [2021-11-23 02:25:50,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:50,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525799209] [2021-11-23 02:25:50,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:50,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:51,896 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-23 02:25:51,896 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:51,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525799209] [2021-11-23 02:25:51,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525799209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:51,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:51,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:25:51,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649086249] [2021-11-23 02:25:51,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:51,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:25:51,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:51,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:25:51,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:25:51,941 INFO L87 Difference]: Start difference. First operand has 1433 states, 823 states have (on average 1.2843256379100851) internal successors, (1057), 861 states have internal predecessors, (1057), 511 states have call successors, (511), 101 states have call predecessors, (511), 100 states have return successors, (505), 498 states have call predecessors, (505), 505 states have call successors, (505) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 02:25:54,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:25:59,784 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:26:02,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:26:02,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:02,211 INFO L93 Difference]: Finished difference Result 4097 states and 6022 transitions. [2021-11-23 02:26:02,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:26:02,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 151 [2021-11-23 02:26:02,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:02,253 INFO L225 Difference]: With dead ends: 4097 [2021-11-23 02:26:02,254 INFO L226 Difference]: Without dead ends: 2681 [2021-11-23 02:26:02,268 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 [2021-11-23 02:26:02,272 INFO L933 BasicCegarLoop]: 2194 mSDtfsCounter, 1840 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 3913 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:02,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1840 Valid, 3913 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 590 Invalid, 3 Unknown, 0 Unchecked, 9.9s Time] [2021-11-23 02:26:02,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-11-23 02:26:02,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2676. [2021-11-23 02:26:02,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2676 states, 1542 states have (on average 1.2782101167315174) internal successors, (1971), 1608 states have internal predecessors, (1971), 936 states have call successors, (936), 196 states have call predecessors, (936), 195 states have return successors, (932), 917 states have call predecessors, (932), 932 states have call successors, (932) [2021-11-23 02:26:02,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 3839 transitions. [2021-11-23 02:26:02,549 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 3839 transitions. Word has length 151 [2021-11-23 02:26:02,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:02,551 INFO L470 AbstractCegarLoop]: Abstraction has 2676 states and 3839 transitions. [2021-11-23 02:26:02,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 02:26:02,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 3839 transitions. [2021-11-23 02:26:02,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-23 02:26:02,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:02,557 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:02,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:26:02,558 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:26:02,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:02,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1126243917, now seen corresponding path program 1 times [2021-11-23 02:26:02,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:02,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67254903] [2021-11-23 02:26:02,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:02,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-23 02:26:03,005 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:03,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67254903] [2021-11-23 02:26:03,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67254903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:03,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:03,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:26:03,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467000274] [2021-11-23 02:26:03,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:03,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:26:03,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:03,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:26:03,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:26:03,014 INFO L87 Difference]: Start difference. First operand 2676 states and 3839 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 02:26:05,254 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:26:08,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:26:10,943 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:26:15,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:26:15,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:15,446 INFO L93 Difference]: Finished difference Result 7605 states and 10865 transitions. [2021-11-23 02:26:15,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:26:15,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 159 [2021-11-23 02:26:15,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:15,501 INFO L225 Difference]: With dead ends: 7605 [2021-11-23 02:26:15,501 INFO L226 Difference]: Without dead ends: 4956 [2021-11-23 02:26:15,518 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 [2021-11-23 02:26:15,519 INFO L933 BasicCegarLoop]: 2171 mSDtfsCounter, 1701 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1701 SdHoareTripleChecker+Valid, 3846 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:15,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1701 Valid, 3846 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 617 Invalid, 3 Unknown, 0 Unchecked, 12.0s Time] [2021-11-23 02:26:15,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4956 states. [2021-11-23 02:26:15,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4956 to 4926. [2021-11-23 02:26:15,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4926 states, 2816 states have (on average 1.2638494318181819) internal successors, (3559), 2945 states have internal predecessors, (3559), 1728 states have call successors, (1728), 382 states have call predecessors, (1728), 379 states have return successors, (1730), 1686 states have call predecessors, (1730), 1724 states have call successors, (1730) [2021-11-23 02:26:15,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4926 states to 4926 states and 7017 transitions. [2021-11-23 02:26:15,878 INFO L78 Accepts]: Start accepts. Automaton has 4926 states and 7017 transitions. Word has length 159 [2021-11-23 02:26:15,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:15,880 INFO L470 AbstractCegarLoop]: Abstraction has 4926 states and 7017 transitions. [2021-11-23 02:26:15,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 02:26:15,881 INFO L276 IsEmpty]: Start isEmpty. Operand 4926 states and 7017 transitions. [2021-11-23 02:26:15,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-23 02:26:15,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:15,892 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:15,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:26:15,893 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:26:15,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:15,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1707911413, now seen corresponding path program 1 times [2021-11-23 02:26:15,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:15,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071241172] [2021-11-23 02:26:15,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:15,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:16,312 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-23 02:26:16,312 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:16,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071241172] [2021-11-23 02:26:16,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071241172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:16,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:16,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:26:16,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525552191] [2021-11-23 02:26:16,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:16,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:26:16,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:16,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:26:16,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:26:16,315 INFO L87 Difference]: Start difference. First operand 4926 states and 7017 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-23 02:26:18,395 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:26:23,520 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:26:25,796 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:26:28,760 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:26:28,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:28,766 INFO L93 Difference]: Finished difference Result 14508 states and 20686 transitions. [2021-11-23 02:26:28,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:26:28,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 174 [2021-11-23 02:26:28,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:28,888 INFO L225 Difference]: With dead ends: 14508 [2021-11-23 02:26:28,890 INFO L226 Difference]: Without dead ends: 9609 [2021-11-23 02:26:28,924 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 [2021-11-23 02:26:28,935 INFO L933 BasicCegarLoop]: 2281 mSDtfsCounter, 1960 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1960 SdHoareTripleChecker+Valid, 3948 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:28,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1960 Valid, 3948 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 576 Invalid, 3 Unknown, 0 Unchecked, 11.9s Time] [2021-11-23 02:26:28,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9609 states. [2021-11-23 02:26:29,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9609 to 9574. [2021-11-23 02:26:29,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9574 states, 5482 states have (on average 1.2650492520977745) internal successors, (6935), 5751 states have internal predecessors, (6935), 3342 states have call successors, (3342), 758 states have call predecessors, (3342), 747 states have return successors, (3376), 3236 states have call predecessors, (3376), 3338 states have call successors, (3376) [2021-11-23 02:26:29,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9574 states to 9574 states and 13653 transitions. [2021-11-23 02:26:29,557 INFO L78 Accepts]: Start accepts. Automaton has 9574 states and 13653 transitions. Word has length 174 [2021-11-23 02:26:29,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:29,558 INFO L470 AbstractCegarLoop]: Abstraction has 9574 states and 13653 transitions. [2021-11-23 02:26:29,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-23 02:26:29,559 INFO L276 IsEmpty]: Start isEmpty. Operand 9574 states and 13653 transitions. [2021-11-23 02:26:29,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-23 02:26:29,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:29,564 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 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] [2021-11-23 02:26:29,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:26:29,565 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:26:29,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:29,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1529660918, now seen corresponding path program 1 times [2021-11-23 02:26:29,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:29,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910733597] [2021-11-23 02:26:29,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:29,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2021-11-23 02:26:30,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:30,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910733597] [2021-11-23 02:26:30,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910733597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:30,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:30,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:26:30,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046922618] [2021-11-23 02:26:30,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:30,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:26:30,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:30,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:26:30,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:26:30,269 INFO L87 Difference]: Start difference. First operand 9574 states and 13653 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-23 02:26:32,350 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:26:44,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:26:50,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:26:51,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:51,040 INFO L93 Difference]: Finished difference Result 20645 states and 29231 transitions. [2021-11-23 02:26:51,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:26:51,041 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 183 [2021-11-23 02:26:51,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:51,151 INFO L225 Difference]: With dead ends: 20645 [2021-11-23 02:26:51,151 INFO L226 Difference]: Without dead ends: 11098 [2021-11-23 02:26:51,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:26:51,219 INFO L933 BasicCegarLoop]: 2879 mSDtfsCounter, 4283 mSDsluCounter, 4290 mSDsCounter, 0 mSdLazyCounter, 2762 mSolverCounterSat, 975 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4385 SdHoareTripleChecker+Valid, 6389 SdHoareTripleChecker+Invalid, 3740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 975 IncrementalHoareTripleChecker+Valid, 2762 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:51,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4385 Valid, 6389 Invalid, 3740 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [975 Valid, 2762 Invalid, 3 Unknown, 0 Unchecked, 20.1s Time] [2021-11-23 02:26:51,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11098 states. [2021-11-23 02:26:51,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11098 to 11019. [2021-11-23 02:26:51,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11019 states, 6405 states have (on average 1.262919594067135) internal successors, (8089), 6700 states have internal predecessors, (8089), 3667 states have call successors, (3667), 963 states have call predecessors, (3667), 944 states have return successors, (3682), 3533 states have call predecessors, (3682), 3663 states have call successors, (3682) [2021-11-23 02:26:52,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11019 states to 11019 states and 15438 transitions. [2021-11-23 02:26:52,064 INFO L78 Accepts]: Start accepts. Automaton has 11019 states and 15438 transitions. Word has length 183 [2021-11-23 02:26:52,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:52,065 INFO L470 AbstractCegarLoop]: Abstraction has 11019 states and 15438 transitions. [2021-11-23 02:26:52,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-23 02:26:52,066 INFO L276 IsEmpty]: Start isEmpty. Operand 11019 states and 15438 transitions. [2021-11-23 02:26:52,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-23 02:26:52,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:52,071 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:52,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:26:52,072 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:26:52,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:52,073 INFO L85 PathProgramCache]: Analyzing trace with hash 25734765, now seen corresponding path program 1 times [2021-11-23 02:26:52,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:52,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798817495] [2021-11-23 02:26:52,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:52,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:52,634 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2021-11-23 02:26:52,634 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:52,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798817495] [2021-11-23 02:26:52,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798817495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:52,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:52,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:26:52,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008729933] [2021-11-23 02:26:52,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:52,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:26:52,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:52,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:26:52,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:26:52,637 INFO L87 Difference]: Start difference. First operand 11019 states and 15438 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-23 02:26:54,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:27:01,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:27:03,190 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:27:06,480 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:27:10,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:27:12,210 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:27:12,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:27:12,341 INFO L93 Difference]: Finished difference Result 21719 states and 30459 transitions. [2021-11-23 02:27:12,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:27:12,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 193 [2021-11-23 02:27:12,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:27:12,491 INFO L225 Difference]: With dead ends: 21719 [2021-11-23 02:27:12,491 INFO L226 Difference]: Without dead ends: 21717 [2021-11-23 02:27:12,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:27:12,511 INFO L933 BasicCegarLoop]: 2215 mSDtfsCounter, 1965 mSDsluCounter, 6974 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 8328 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:27:12,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1977 Valid, 8328 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1166 Invalid, 5 Unknown, 0 Unchecked, 19.0s Time] [2021-11-23 02:27:12,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21717 states. [2021-11-23 02:27:13,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21717 to 21710. [2021-11-23 02:27:13,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21710 states, 12607 states have (on average 1.2642976124375347) internal successors, (15939), 13193 states have internal predecessors, (15939), 7242 states have call successors, (7242), 1896 states have call predecessors, (7242), 1858 states have return successors, (7272), 6974 states have call predecessors, (7272), 7234 states have call successors, (7272) [2021-11-23 02:27:13,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21710 states to 21710 states and 30453 transitions. [2021-11-23 02:27:13,774 INFO L78 Accepts]: Start accepts. Automaton has 21710 states and 30453 transitions. Word has length 193 [2021-11-23 02:27:13,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:27:13,776 INFO L470 AbstractCegarLoop]: Abstraction has 21710 states and 30453 transitions. [2021-11-23 02:27:13,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-23 02:27:13,777 INFO L276 IsEmpty]: Start isEmpty. Operand 21710 states and 30453 transitions. [2021-11-23 02:27:13,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-23 02:27:13,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:27:13,783 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 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] [2021-11-23 02:27:13,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:27:13,784 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:27:13,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:27:13,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1239307338, now seen corresponding path program 1 times [2021-11-23 02:27:13,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:27:13,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691707968] [2021-11-23 02:27:13,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:27:13,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:27:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:27:14,467 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2021-11-23 02:27:14,467 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:27:14,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691707968] [2021-11-23 02:27:14,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691707968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:27:14,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:27:14,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:27:14,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822679102] [2021-11-23 02:27:14,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:27:14,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:27:14,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:27:14,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:27:14,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:27:14,470 INFO L87 Difference]: Start difference. First operand 21710 states and 30453 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-23 02:27:16,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:27:21,921 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:27:27,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:27:27,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:27:27,903 INFO L93 Difference]: Finished difference Result 32194 states and 45145 transitions. [2021-11-23 02:27:27,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:27:27,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 202 [2021-11-23 02:27:27,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:27:28,325 INFO L225 Difference]: With dead ends: 32194 [2021-11-23 02:27:28,326 INFO L226 Difference]: Without dead ends: 32192 [2021-11-23 02:27:28,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:27:28,343 INFO L933 BasicCegarLoop]: 2346 mSDtfsCounter, 1885 mSDsluCounter, 7376 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1896 SdHoareTripleChecker+Valid, 8715 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:27:28,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1896 Valid, 8715 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1389 Invalid, 3 Unknown, 0 Unchecked, 12.5s Time] [2021-11-23 02:27:28,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32192 states. [2021-11-23 02:27:30,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32192 to 32185. [2021-11-23 02:27:30,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32185 states, 18688 states have (on average 1.2647688356164384) internal successors, (23636), 19553 states have internal predecessors, (23636), 10729 states have call successors, (10729), 2822 states have call predecessors, (10729), 2765 states have return successors, (10774), 10331 states have call predecessors, (10774), 10717 states have call successors, (10774) [2021-11-23 02:27:30,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32185 states to 32185 states and 45139 transitions. [2021-11-23 02:27:30,323 INFO L78 Accepts]: Start accepts. Automaton has 32185 states and 45139 transitions. Word has length 202 [2021-11-23 02:27:30,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:27:30,324 INFO L470 AbstractCegarLoop]: Abstraction has 32185 states and 45139 transitions. [2021-11-23 02:27:30,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-23 02:27:30,325 INFO L276 IsEmpty]: Start isEmpty. Operand 32185 states and 45139 transitions. [2021-11-23 02:27:30,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-23 02:27:30,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:27:30,331 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:27:30,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:27:30,332 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:27:30,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:27:30,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1975114191, now seen corresponding path program 1 times [2021-11-23 02:27:30,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:27:30,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131302835] [2021-11-23 02:27:30,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:27:30,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:27:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:27:30,818 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 778 trivial. 0 not checked. [2021-11-23 02:27:30,818 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:27:30,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131302835] [2021-11-23 02:27:30,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131302835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:27:30,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:27:30,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:27:30,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111006832] [2021-11-23 02:27:30,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:27:30,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:27:30,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:27:30,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:27:30,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:27:30,821 INFO L87 Difference]: Start difference. First operand 32185 states and 45139 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-23 02:27:33,065 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:27:38,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:27:44,544 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:27:44,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:27:44,697 INFO L93 Difference]: Finished difference Result 32198 states and 45148 transitions. [2021-11-23 02:27:44,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:27:44,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 206 [2021-11-23 02:27:44,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:27:44,903 INFO L225 Difference]: With dead ends: 32198 [2021-11-23 02:27:44,903 INFO L226 Difference]: Without dead ends: 32196 [2021-11-23 02:27:44,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:27:44,925 INFO L933 BasicCegarLoop]: 2346 mSDtfsCounter, 1885 mSDsluCounter, 7376 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 8715 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:27:44,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1895 Valid, 8715 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1389 Invalid, 3 Unknown, 0 Unchecked, 12.7s Time] [2021-11-23 02:27:44,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32196 states. [2021-11-23 02:27:46,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32196 to 32189. [2021-11-23 02:27:46,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32189 states, 18691 states have (on average 1.2647263388796748) internal successors, (23639), 19556 states have internal predecessors, (23639), 10729 states have call successors, (10729), 2823 states have call predecessors, (10729), 2766 states have return successors, (10774), 10331 states have call predecessors, (10774), 10717 states have call successors, (10774) [2021-11-23 02:27:47,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32189 states to 32189 states and 45142 transitions. [2021-11-23 02:27:47,008 INFO L78 Accepts]: Start accepts. Automaton has 32189 states and 45142 transitions. Word has length 206 [2021-11-23 02:27:47,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:27:47,009 INFO L470 AbstractCegarLoop]: Abstraction has 32189 states and 45142 transitions. [2021-11-23 02:27:47,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-23 02:27:47,010 INFO L276 IsEmpty]: Start isEmpty. Operand 32189 states and 45142 transitions. [2021-11-23 02:27:47,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-23 02:27:47,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:27:47,019 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:27:47,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:27:47,020 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:27:47,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:27:47,022 INFO L85 PathProgramCache]: Analyzing trace with hash -301046001, now seen corresponding path program 1 times [2021-11-23 02:27:47,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:27:47,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377288272] [2021-11-23 02:27:47,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:27:47,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:27:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:27:47,716 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2021-11-23 02:27:47,717 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:27:47,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377288272] [2021-11-23 02:27:47,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377288272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:27:47,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:27:47,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:27:47,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417973146] [2021-11-23 02:27:47,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:27:47,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:27:47,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:27:47,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:27:47,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:27:47,720 INFO L87 Difference]: Start difference. First operand 32189 states and 45142 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 02:27:49,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:27:55,434 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:28:01,190 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:28:01,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:28:01,415 INFO L93 Difference]: Finished difference Result 32202 states and 45151 transitions. [2021-11-23 02:28:01,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:28:01,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 211 [2021-11-23 02:28:01,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:28:01,623 INFO L225 Difference]: With dead ends: 32202 [2021-11-23 02:28:01,624 INFO L226 Difference]: Without dead ends: 32200 [2021-11-23 02:28:01,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:28:01,642 INFO L933 BasicCegarLoop]: 2346 mSDtfsCounter, 1885 mSDsluCounter, 7376 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 8715 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:28:01,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1894 Valid, 8715 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1389 Invalid, 3 Unknown, 0 Unchecked, 12.6s Time] [2021-11-23 02:28:01,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32200 states. [2021-11-23 02:28:03,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32200 to 32193. [2021-11-23 02:28:03,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32193 states, 18694 states have (on average 1.2646838557826041) internal successors, (23642), 19559 states have internal predecessors, (23642), 10729 states have call successors, (10729), 2824 states have call predecessors, (10729), 2767 states have return successors, (10774), 10331 states have call predecessors, (10774), 10717 states have call successors, (10774) [2021-11-23 02:28:03,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32193 states to 32193 states and 45145 transitions. [2021-11-23 02:28:03,474 INFO L78 Accepts]: Start accepts. Automaton has 32193 states and 45145 transitions. Word has length 211 [2021-11-23 02:28:03,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:28:03,475 INFO L470 AbstractCegarLoop]: Abstraction has 32193 states and 45145 transitions. [2021-11-23 02:28:03,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 02:28:03,476 INFO L276 IsEmpty]: Start isEmpty. Operand 32193 states and 45145 transitions. [2021-11-23 02:28:03,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-23 02:28:03,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:03,483 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:28:03,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:28:03,484 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:28:03,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:03,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1482627249, now seen corresponding path program 1 times [2021-11-23 02:28:03,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:03,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182602099] [2021-11-23 02:28:03,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:03,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:04,283 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2021-11-23 02:28:04,284 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:04,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182602099] [2021-11-23 02:28:04,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182602099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:28:04,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:28:04,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:28:04,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479761996] [2021-11-23 02:28:04,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:28:04,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:28:04,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:28:04,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:28:04,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:28:04,286 INFO L87 Difference]: Start difference. First operand 32193 states and 45145 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (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) [2021-11-23 02:28:06,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:28:11,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:28:13,713 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:28:15,722 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:28:19,290 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:28:23,090 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:28:25,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:28:27,107 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:28:27,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:28:27,307 INFO L93 Difference]: Finished difference Result 32210 states and 45158 transitions. [2021-11-23 02:28:27,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:28:27,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (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 216 [2021-11-23 02:28:27,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:28:27,458 INFO L225 Difference]: With dead ends: 32210 [2021-11-23 02:28:27,458 INFO L226 Difference]: Without dead ends: 32208 [2021-11-23 02:28:27,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:28:27,475 INFO L933 BasicCegarLoop]: 2218 mSDtfsCounter, 1959 mSDsluCounter, 6975 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 8331 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:28:27,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1967 Valid, 8331 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1165 Invalid, 7 Unknown, 0 Unchecked, 21.9s Time] [2021-11-23 02:28:27,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32208 states. [2021-11-23 02:28:29,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32208 to 32201. [2021-11-23 02:28:29,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32201 states, 18700 states have (on average 1.2645989304812835) internal successors, (23648), 19565 states have internal predecessors, (23648), 10729 states have call successors, (10729), 2826 states have call predecessors, (10729), 2769 states have return successors, (10774), 10331 states have call predecessors, (10774), 10717 states have call successors, (10774) [2021-11-23 02:28:29,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32201 states to 32201 states and 45151 transitions. [2021-11-23 02:28:29,255 INFO L78 Accepts]: Start accepts. Automaton has 32201 states and 45151 transitions. Word has length 216 [2021-11-23 02:28:29,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:28:29,256 INFO L470 AbstractCegarLoop]: Abstraction has 32201 states and 45151 transitions. [2021-11-23 02:28:29,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (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) [2021-11-23 02:28:29,257 INFO L276 IsEmpty]: Start isEmpty. Operand 32201 states and 45151 transitions. [2021-11-23 02:28:29,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-23 02:28:29,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:29,269 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:28:29,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:28:29,269 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:28:29,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:29,270 INFO L85 PathProgramCache]: Analyzing trace with hash -174189878, now seen corresponding path program 1 times [2021-11-23 02:28:29,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:29,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567054175] [2021-11-23 02:28:29,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:29,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:29,740 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 815 trivial. 0 not checked. [2021-11-23 02:28:29,740 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:29,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567054175] [2021-11-23 02:28:29,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567054175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:28:29,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:28:29,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:28:29,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182745700] [2021-11-23 02:28:29,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:28:29,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:28:29,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:28:29,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:28:29,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:28:29,743 INFO L87 Difference]: Start difference. First operand 32201 states and 45151 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (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) [2021-11-23 02:28:31,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:28:37,560 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:28:43,650 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:28:43,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:28:43,808 INFO L93 Difference]: Finished difference Result 32214 states and 45160 transitions. [2021-11-23 02:28:43,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:28:43,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (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 222 [2021-11-23 02:28:43,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:28:43,977 INFO L225 Difference]: With dead ends: 32214 [2021-11-23 02:28:43,977 INFO L226 Difference]: Without dead ends: 32212 [2021-11-23 02:28:43,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:28:44,000 INFO L933 BasicCegarLoop]: 2346 mSDtfsCounter, 1885 mSDsluCounter, 7376 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 8715 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:28:44,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1892 Valid, 8715 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1389 Invalid, 3 Unknown, 0 Unchecked, 13.0s Time] [2021-11-23 02:28:44,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32212 states. [2021-11-23 02:28:45,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32212 to 32205. [2021-11-23 02:28:45,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32205 states, 18703 states have (on average 1.2645564882639149) internal successors, (23651), 19568 states have internal predecessors, (23651), 10729 states have call successors, (10729), 2827 states have call predecessors, (10729), 2770 states have return successors, (10774), 10331 states have call predecessors, (10774), 10717 states have call successors, (10774) [2021-11-23 02:28:45,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32205 states to 32205 states and 45154 transitions. [2021-11-23 02:28:45,537 INFO L78 Accepts]: Start accepts. Automaton has 32205 states and 45154 transitions. Word has length 222 [2021-11-23 02:28:45,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:28:45,537 INFO L470 AbstractCegarLoop]: Abstraction has 32205 states and 45154 transitions. [2021-11-23 02:28:45,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (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) [2021-11-23 02:28:45,538 INFO L276 IsEmpty]: Start isEmpty. Operand 32205 states and 45154 transitions. [2021-11-23 02:28:45,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-23 02:28:45,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:45,547 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 7, 6, 6, 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] [2021-11-23 02:28:45,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:28:45,547 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:28:45,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:45,548 INFO L85 PathProgramCache]: Analyzing trace with hash 775723825, now seen corresponding path program 1 times [2021-11-23 02:28:45,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:45,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278152168] [2021-11-23 02:28:45,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:45,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:45,983 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 834 trivial. 0 not checked. [2021-11-23 02:28:45,983 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:45,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278152168] [2021-11-23 02:28:45,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278152168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:28:45,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:28:45,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:28:45,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608005458] [2021-11-23 02:28:45,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:28:45,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:28:45,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:28:45,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:28:45,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:28:45,986 INFO L87 Difference]: Start difference. First operand 32205 states and 45154 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (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) [2021-11-23 02:28:48,062 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:28:53,047 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:28:55,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:28:57,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:00,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:04,275 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:04,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:29:04,399 INFO L93 Difference]: Finished difference Result 42510 states and 59138 transitions. [2021-11-23 02:29:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:29:04,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (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 226 [2021-11-23 02:29:04,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:29:04,667 INFO L225 Difference]: With dead ends: 42510 [2021-11-23 02:29:04,667 INFO L226 Difference]: Without dead ends: 42508 [2021-11-23 02:29:04,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:29:04,680 INFO L933 BasicCegarLoop]: 2176 mSDtfsCounter, 1880 mSDsluCounter, 6763 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 8095 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:29:04,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1886 Valid, 8095 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1151 Invalid, 5 Unknown, 0 Unchecked, 17.0s Time] [2021-11-23 02:29:04,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42508 states. [2021-11-23 02:29:06,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42508 to 42490. [2021-11-23 02:29:06,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42490 states, 24688 states have (on average 1.262192158133506) internal successors, (31161), 25844 states have internal predecessors, (31161), 13920 states have call successors, (13920), 3990 states have call predecessors, (13920), 3879 states have return successors, (14038), 13315 states have call predecessors, (14038), 13904 states have call successors, (14038) [2021-11-23 02:29:06,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42490 states to 42490 states and 59119 transitions. [2021-11-23 02:29:06,549 INFO L78 Accepts]: Start accepts. Automaton has 42490 states and 59119 transitions. Word has length 226 [2021-11-23 02:29:06,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:06,553 INFO L470 AbstractCegarLoop]: Abstraction has 42490 states and 59119 transitions. [2021-11-23 02:29:06,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (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) [2021-11-23 02:29:06,555 INFO L276 IsEmpty]: Start isEmpty. Operand 42490 states and 59119 transitions. [2021-11-23 02:29:06,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-23 02:29:06,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:06,590 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 8, 7, 7, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:29:06,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 02:29:06,590 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:29:06,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:06,591 INFO L85 PathProgramCache]: Analyzing trace with hash -937860598, now seen corresponding path program 1 times [2021-11-23 02:29:06,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:29:06,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852675945] [2021-11-23 02:29:06,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:06,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:29:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:07,041 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 859 trivial. 0 not checked. [2021-11-23 02:29:07,041 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:29:07,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852675945] [2021-11-23 02:29:07,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852675945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:07,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:07,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:29:07,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081559662] [2021-11-23 02:29:07,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:07,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:29:07,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:29:07,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:29:07,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:29:07,043 INFO L87 Difference]: Start difference. First operand 42490 states and 59119 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-23 02:29:09,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:14,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:20,680 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:21,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:29:21,076 INFO L93 Difference]: Finished difference Result 42503 states and 59128 transitions. [2021-11-23 02:29:21,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:29:21,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 232 [2021-11-23 02:29:21,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:29:21,231 INFO L225 Difference]: With dead ends: 42503 [2021-11-23 02:29:21,231 INFO L226 Difference]: Without dead ends: 42501 [2021-11-23 02:29:21,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:29:21,245 INFO L933 BasicCegarLoop]: 2346 mSDtfsCounter, 1885 mSDsluCounter, 7376 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 8715 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:29:21,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1890 Valid, 8715 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1389 Invalid, 3 Unknown, 0 Unchecked, 12.6s Time] [2021-11-23 02:29:21,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42501 states. [2021-11-23 02:29:22,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42501 to 42494. [2021-11-23 02:29:22,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42494 states, 24691 states have (on average 1.2621603013243692) internal successors, (31164), 25847 states have internal predecessors, (31164), 13920 states have call successors, (13920), 3991 states have call predecessors, (13920), 3880 states have return successors, (14038), 13315 states have call predecessors, (14038), 13904 states have call successors, (14038) [2021-11-23 02:29:22,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42494 states to 42494 states and 59122 transitions. [2021-11-23 02:29:22,987 INFO L78 Accepts]: Start accepts. Automaton has 42494 states and 59122 transitions. Word has length 232 [2021-11-23 02:29:22,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:22,988 INFO L470 AbstractCegarLoop]: Abstraction has 42494 states and 59122 transitions. [2021-11-23 02:29:22,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-23 02:29:22,988 INFO L276 IsEmpty]: Start isEmpty. Operand 42494 states and 59122 transitions. [2021-11-23 02:29:22,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-23 02:29:22,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:22,999 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 9, 8, 8, 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] [2021-11-23 02:29:22,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 02:29:22,999 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:29:23,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:23,000 INFO L85 PathProgramCache]: Analyzing trace with hash -882201167, now seen corresponding path program 1 times [2021-11-23 02:29:23,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:29:23,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101528729] [2021-11-23 02:29:23,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:23,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:29:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:23,700 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2021-11-23 02:29:23,700 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:29:23,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101528729] [2021-11-23 02:29:23,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101528729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:23,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:23,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:29:23,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271425175] [2021-11-23 02:29:23,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:23,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:29:23,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:29:23,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:29:23,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:29:23,703 INFO L87 Difference]: Start difference. First operand 42494 states and 59122 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-23 02:29:25,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:31,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:37,456 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:37,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:29:37,824 INFO L93 Difference]: Finished difference Result 42507 states and 59131 transitions. [2021-11-23 02:29:37,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:29:37,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 236 [2021-11-23 02:29:37,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:29:37,977 INFO L225 Difference]: With dead ends: 42507 [2021-11-23 02:29:37,977 INFO L226 Difference]: Without dead ends: 42505 [2021-11-23 02:29:37,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:29:37,992 INFO L933 BasicCegarLoop]: 2346 mSDtfsCounter, 1885 mSDsluCounter, 7376 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 8715 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:29:37,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1889 Valid, 8715 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1389 Invalid, 3 Unknown, 0 Unchecked, 12.7s Time] [2021-11-23 02:29:38,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42505 states. [2021-11-23 02:29:39,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42505 to 42498. [2021-11-23 02:29:39,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42498 states, 24694 states have (on average 1.2621284522556087) internal successors, (31167), 25850 states have internal predecessors, (31167), 13920 states have call successors, (13920), 3992 states have call predecessors, (13920), 3881 states have return successors, (14038), 13315 states have call predecessors, (14038), 13904 states have call successors, (14038) [2021-11-23 02:29:39,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42498 states to 42498 states and 59125 transitions. [2021-11-23 02:29:39,776 INFO L78 Accepts]: Start accepts. Automaton has 42498 states and 59125 transitions. Word has length 236 [2021-11-23 02:29:39,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:39,777 INFO L470 AbstractCegarLoop]: Abstraction has 42498 states and 59125 transitions. [2021-11-23 02:29:39,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-23 02:29:39,777 INFO L276 IsEmpty]: Start isEmpty. Operand 42498 states and 59125 transitions. [2021-11-23 02:29:39,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-23 02:29:39,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:39,788 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 10, 9, 9, 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] [2021-11-23 02:29:39,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 02:29:39,788 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:29:39,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:39,789 INFO L85 PathProgramCache]: Analyzing trace with hash -54452721, now seen corresponding path program 1 times [2021-11-23 02:29:39,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:29:39,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61284567] [2021-11-23 02:29:39,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:39,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:29:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:40,568 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2021-11-23 02:29:40,568 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:29:40,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61284567] [2021-11-23 02:29:40,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61284567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:40,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:40,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:29:40,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866339757] [2021-11-23 02:29:40,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:40,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:29:40,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:29:40,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:29:40,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:29:40,571 INFO L87 Difference]: Start difference. First operand 42498 states and 59125 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-23 02:29:42,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:48,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:54,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:55,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:29:55,074 INFO L93 Difference]: Finished difference Result 42511 states and 59134 transitions. [2021-11-23 02:29:55,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:29:55,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 241 [2021-11-23 02:29:55,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:29:55,251 INFO L225 Difference]: With dead ends: 42511 [2021-11-23 02:29:55,251 INFO L226 Difference]: Without dead ends: 42509 [2021-11-23 02:29:55,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:29:55,268 INFO L933 BasicCegarLoop]: 2346 mSDtfsCounter, 1885 mSDsluCounter, 7376 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 8715 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:29:55,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1888 Valid, 8715 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1389 Invalid, 3 Unknown, 0 Unchecked, 13.0s Time] [2021-11-23 02:29:55,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42509 states. [2021-11-23 02:29:56,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42509 to 42502. [2021-11-23 02:29:57,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42502 states, 24697 states have (on average 1.2620966109244038) internal successors, (31170), 25853 states have internal predecessors, (31170), 13920 states have call successors, (13920), 3993 states have call predecessors, (13920), 3882 states have return successors, (14038), 13315 states have call predecessors, (14038), 13904 states have call successors, (14038) [2021-11-23 02:29:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42502 states to 42502 states and 59128 transitions. [2021-11-23 02:29:57,190 INFO L78 Accepts]: Start accepts. Automaton has 42502 states and 59128 transitions. Word has length 241 [2021-11-23 02:29:57,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:57,191 INFO L470 AbstractCegarLoop]: Abstraction has 42502 states and 59128 transitions. [2021-11-23 02:29:57,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-23 02:29:57,191 INFO L276 IsEmpty]: Start isEmpty. Operand 42502 states and 59128 transitions. [2021-11-23 02:29:57,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-23 02:29:57,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:57,201 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 11, 10, 10, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:29:57,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 02:29:57,202 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:29:57,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:57,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1668518893, now seen corresponding path program 1 times [2021-11-23 02:29:57,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:29:57,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167036450] [2021-11-23 02:29:57,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:57,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:29:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:57,971 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 947 trivial. 0 not checked. [2021-11-23 02:29:57,972 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:29:57,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167036450] [2021-11-23 02:29:57,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167036450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:57,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:57,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:29:57,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944750873] [2021-11-23 02:29:57,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:57,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:29:57,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:29:57,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:29:57,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:29:57,975 INFO L87 Difference]: Start difference. First operand 42502 states and 59128 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-23 02:30:00,039 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:06,239 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:12,514 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:12,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:12,909 INFO L93 Difference]: Finished difference Result 42515 states and 59137 transitions. [2021-11-23 02:30:12,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:30:12,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 243 [2021-11-23 02:30:12,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:13,067 INFO L225 Difference]: With dead ends: 42515 [2021-11-23 02:30:13,067 INFO L226 Difference]: Without dead ends: 42513 [2021-11-23 02:30:13,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:30:13,085 INFO L933 BasicCegarLoop]: 2346 mSDtfsCounter, 1886 mSDsluCounter, 7376 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 8715 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:13,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1888 Valid, 8715 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1389 Invalid, 3 Unknown, 0 Unchecked, 13.4s Time] [2021-11-23 02:30:13,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42513 states. [2021-11-23 02:30:14,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42513 to 42506. [2021-11-23 02:30:14,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42506 states, 24700 states have (on average 1.2620647773279352) internal successors, (31173), 25856 states have internal predecessors, (31173), 13920 states have call successors, (13920), 3994 states have call predecessors, (13920), 3883 states have return successors, (14038), 13315 states have call predecessors, (14038), 13904 states have call successors, (14038) [2021-11-23 02:30:15,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42506 states to 42506 states and 59131 transitions. [2021-11-23 02:30:15,127 INFO L78 Accepts]: Start accepts. Automaton has 42506 states and 59131 transitions. Word has length 243 [2021-11-23 02:30:15,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:15,128 INFO L470 AbstractCegarLoop]: Abstraction has 42506 states and 59131 transitions. [2021-11-23 02:30:15,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-23 02:30:15,129 INFO L276 IsEmpty]: Start isEmpty. Operand 42506 states and 59131 transitions. [2021-11-23 02:30:15,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-23 02:30:15,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:15,140 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 12, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:30:15,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 02:30:15,141 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:30:15,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:15,142 INFO L85 PathProgramCache]: Analyzing trace with hash 183823571, now seen corresponding path program 1 times [2021-11-23 02:30:15,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:15,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736481242] [2021-11-23 02:30:15,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:15,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:15,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1009 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 987 trivial. 0 not checked. [2021-11-23 02:30:15,921 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:30:15,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736481242] [2021-11-23 02:30:15,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736481242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:15,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:30:15,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:30:15,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838052397] [2021-11-23 02:30:15,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:15,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:30:15,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:30:15,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:30:15,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:30:15,924 INFO L87 Difference]: Start difference. First operand 42506 states and 59131 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-23 02:30:18,011 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:24,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:30,803 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:31,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:31,728 INFO L93 Difference]: Finished difference Result 71738 states and 99918 transitions. [2021-11-23 02:30:31,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:30:31,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 248 [2021-11-23 02:30:31,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:32,077 INFO L225 Difference]: With dead ends: 71738 [2021-11-23 02:30:32,077 INFO L226 Difference]: Without dead ends: 71734 [2021-11-23 02:30:32,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:30:32,104 INFO L933 BasicCegarLoop]: 2329 mSDtfsCounter, 1831 mSDsluCounter, 7330 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1832 SdHoareTripleChecker+Valid, 8658 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:32,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1832 Valid, 8658 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1383 Invalid, 3 Unknown, 0 Unchecked, 13.5s Time] [2021-11-23 02:30:32,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71734 states. [2021-11-23 02:30:35,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71734 to 71702. [2021-11-23 02:30:35,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71702 states, 41768 states have (on average 1.2668789503926452) internal successors, (52915), 43788 states have internal predecessors, (52915), 23331 states have call successors, (23331), 6830 states have call predecessors, (23331), 6600 states have return successors, (23636), 22199 states have call predecessors, (23636), 23303 states have call successors, (23636) [2021-11-23 02:30:35,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71702 states to 71702 states and 99882 transitions. [2021-11-23 02:30:35,632 INFO L78 Accepts]: Start accepts. Automaton has 71702 states and 99882 transitions. Word has length 248 [2021-11-23 02:30:35,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:35,633 INFO L470 AbstractCegarLoop]: Abstraction has 71702 states and 99882 transitions. [2021-11-23 02:30:35,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-23 02:30:35,634 INFO L276 IsEmpty]: Start isEmpty. Operand 71702 states and 99882 transitions. [2021-11-23 02:30:35,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-23 02:30:35,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:35,646 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 13, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:30:35,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 02:30:35,647 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:30:35,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:35,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1625142419, now seen corresponding path program 1 times [2021-11-23 02:30:35,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:35,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371338819] [2021-11-23 02:30:35,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:35,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:36,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 1031 trivial. 0 not checked. [2021-11-23 02:30:36,114 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:30:36,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371338819] [2021-11-23 02:30:36,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371338819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:36,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:30:36,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:30:36,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342142255] [2021-11-23 02:30:36,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:36,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:30:36,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:30:36,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:30:36,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:30:36,117 INFO L87 Difference]: Start difference. First operand 71702 states and 99882 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-23 02:30:38,195 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:44,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:51,154 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:51,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:51,961 INFO L93 Difference]: Finished difference Result 71709 states and 99886 transitions. [2021-11-23 02:30:51,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:30:51,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 253 [2021-11-23 02:30:51,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:52,405 INFO L225 Difference]: With dead ends: 71709 [2021-11-23 02:30:52,406 INFO L226 Difference]: Without dead ends: 71549 [2021-11-23 02:30:52,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:30:52,435 INFO L933 BasicCegarLoop]: 2346 mSDtfsCounter, 1882 mSDsluCounter, 7378 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1882 SdHoareTripleChecker+Valid, 8717 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:52,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1882 Valid, 8717 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1385 Invalid, 3 Unknown, 0 Unchecked, 13.5s Time] [2021-11-23 02:30:52,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71549 states. [2021-11-23 02:30:55,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71549 to 71544. [2021-11-23 02:30:55,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71544 states, 41714 states have (on average 1.2663614134343386) internal successors, (52825), 43699 states have internal predecessors, (52825), 23243 states have call successors, (23243), 6804 states have call predecessors, (23243), 6584 states have return successors, (23552), 22156 states have call predecessors, (23552), 23219 states have call successors, (23552) [2021-11-23 02:30:55,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71544 states to 71544 states and 99620 transitions. [2021-11-23 02:30:56,003 INFO L78 Accepts]: Start accepts. Automaton has 71544 states and 99620 transitions. Word has length 253 [2021-11-23 02:30:56,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:56,004 INFO L470 AbstractCegarLoop]: Abstraction has 71544 states and 99620 transitions. [2021-11-23 02:30:56,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-23 02:30:56,005 INFO L276 IsEmpty]: Start isEmpty. Operand 71544 states and 99620 transitions. [2021-11-23 02:30:56,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-23 02:30:56,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:56,018 INFO L514 BasicCegarLoop]: trace histogram [19, 13, 13, 13, 13, 13, 13, 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, 1, 1] [2021-11-23 02:30:56,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 02:30:56,018 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:30:56,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:56,019 INFO L85 PathProgramCache]: Analyzing trace with hash -315234821, now seen corresponding path program 1 times [2021-11-23 02:30:56,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:56,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585168510] [2021-11-23 02:30:56,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:56,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:56,435 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2021-11-23 02:30:56,435 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:30:56,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585168510] [2021-11-23 02:30:56,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585168510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:56,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:30:56,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:30:56,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144303874] [2021-11-23 02:30:56,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:56,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:30:56,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:30:56,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:30:56,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:30:56,438 INFO L87 Difference]: Start difference. First operand 71544 states and 99620 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-23 02:30:58,518 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:04,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:09,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:10,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:10,830 INFO L93 Difference]: Finished difference Result 160664 states and 223718 transitions. [2021-11-23 02:31:10,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:31:10,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 253 [2021-11-23 02:31:10,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:11,227 INFO L225 Difference]: With dead ends: 160664 [2021-11-23 02:31:11,227 INFO L226 Difference]: Without dead ends: 89443 [2021-11-23 02:31:11,461 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 [2021-11-23 02:31:11,462 INFO L933 BasicCegarLoop]: 2750 mSDtfsCounter, 1240 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 14 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 4445 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:11,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1240 Valid, 4445 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 821 Invalid, 3 Unknown, 0 Unchecked, 10.7s Time] [2021-11-23 02:31:11,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89443 states. [2021-11-23 02:31:15,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89443 to 89232. [2021-11-23 02:31:15,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89232 states, 52295 states have (on average 1.2657233005067405) internal successors, (66191), 54750 states have internal predecessors, (66191), 28663 states have call successors, (28663), 8543 states have call predecessors, (28663), 8271 states have return successors, (29002), 27313 states have call predecessors, (29002), 28639 states have call successors, (29002)