./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a8b422-8da1-40d2-9578-f12a9f108bd8/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a8b422-8da1-40d2-9578-f12a9f108bd8/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a8b422-8da1-40d2-9578-f12a9f108bd8/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a8b422-8da1-40d2-9578-f12a9f108bd8/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a8b422-8da1-40d2-9578-f12a9f108bd8/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a8b422-8da1-40d2-9578-f12a9f108bd8/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bce5aa2319ae110f8a0b01ff2a22780545859bbd4eceb3e6d7a0268461602692 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:23:45,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:23:45,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:23:45,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:23:45,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:23:45,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:23:45,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:23:45,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:23:45,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:23:45,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:23:45,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:23:45,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:23:45,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:23:45,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:23:45,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:23:45,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:23:45,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:23:45,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:23:45,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:23:45,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:23:45,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:23:45,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:23:45,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:23:45,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:23:45,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:23:45,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:23:45,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:23:45,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:23:45,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:23:45,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:23:45,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:23:45,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:23:45,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:23:45,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:23:45,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:23:45,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:23:45,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:23:45,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:23:45,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:23:45,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:23:45,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:23:45,748 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a8b422-8da1-40d2-9578-f12a9f108bd8/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:23:45,783 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:23:45,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:23:45,784 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:23:45,784 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:23:45,785 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:23:45,785 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:23:45,786 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:23:45,786 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:23:45,786 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:23:45,786 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:23:45,787 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:23:45,791 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:23:45,791 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:23:45,792 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:23:45,792 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:23:45,792 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:23:45,792 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:23:45,793 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:23:45,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:23:45,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:23:45,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:23:45,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:23:45,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:23:45,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:23:45,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:23:45,796 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:23:45,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:23:45,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:23:45,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:23:45,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:23:45,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:23:45,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:23:45,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:23:45,799 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:23:45,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:23:45,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:23:45,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:23:45,800 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:23:45,800 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_e9a8b422-8da1-40d2-9578-f12a9f108bd8/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a8b422-8da1-40d2-9578-f12a9f108bd8/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bce5aa2319ae110f8a0b01ff2a22780545859bbd4eceb3e6d7a0268461602692 [2021-11-21 01:23:46,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:23:46,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:23:46,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:23:46,234 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:23:46,235 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:23:46,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a8b422-8da1-40d2-9578-f12a9f108bd8/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i [2021-11-21 01:23:46,317 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a8b422-8da1-40d2-9578-f12a9f108bd8/bin/utaipan-TEXQjIfE4P/data/f516f0a67/e267a4f0d2974e4486075c2a94779529/FLAG6da3ee1b5 [2021-11-21 01:23:47,662 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:23:47,663 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a8b422-8da1-40d2-9578-f12a9f108bd8/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i [2021-11-21 01:23:47,756 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a8b422-8da1-40d2-9578-f12a9f108bd8/bin/utaipan-TEXQjIfE4P/data/f516f0a67/e267a4f0d2974e4486075c2a94779529/FLAG6da3ee1b5 [2021-11-21 01:23:47,842 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a8b422-8da1-40d2-9578-f12a9f108bd8/bin/utaipan-TEXQjIfE4P/data/f516f0a67/e267a4f0d2974e4486075c2a94779529 [2021-11-21 01:23:47,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:23:47,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:23:47,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:23:47,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:23:47,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:23:47,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:23:47" (1/1) ... [2021-11-21 01:23:47,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2420288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:47, skipping insertion in model container [2021-11-21 01:23:47,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:23:47" (1/1) ... [2021-11-21 01:23:47,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:23:48,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:23:53,453 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_e9a8b422-8da1-40d2-9578-f12a9f108bd8/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588044,588057] [2021-11-21 01:23:53,456 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_e9a8b422-8da1-40d2-9578-f12a9f108bd8/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588213,588226] [2021-11-21 01:23:53,457 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_e9a8b422-8da1-40d2-9578-f12a9f108bd8/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588380,588393] [2021-11-21 01:23:53,457 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_e9a8b422-8da1-40d2-9578-f12a9f108bd8/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588548,588561] [2021-11-21 01:23:53,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:23:53,577 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:23:54,489 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_e9a8b422-8da1-40d2-9578-f12a9f108bd8/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588044,588057] [2021-11-21 01:23:54,490 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_e9a8b422-8da1-40d2-9578-f12a9f108bd8/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588213,588226] [2021-11-21 01:23:54,490 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_e9a8b422-8da1-40d2-9578-f12a9f108bd8/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588380,588393] [2021-11-21 01:23:54,491 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_e9a8b422-8da1-40d2-9578-f12a9f108bd8/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588548,588561] [2021-11-21 01:23:54,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:23:54,777 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:23:54,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:54 WrapperNode [2021-11-21 01:23:54,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:23:54,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:23:54,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:23:54,779 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:23:54,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:54" (1/1) ... [2021-11-21 01:23:54,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:54" (1/1) ... [2021-11-21 01:23:55,313 INFO L137 Inliner]: procedures = 539, calls = 4204, calls flagged for inlining = 262, calls inlined = 249, statements flattened = 8457 [2021-11-21 01:23:55,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:23:55,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:23:55,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:23:55,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:23:55,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:54" (1/1) ... [2021-11-21 01:23:55,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:54" (1/1) ... [2021-11-21 01:23:55,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:54" (1/1) ... [2021-11-21 01:23:55,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:54" (1/1) ... [2021-11-21 01:23:55,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:54" (1/1) ... [2021-11-21 01:23:55,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:54" (1/1) ... [2021-11-21 01:23:55,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:54" (1/1) ... [2021-11-21 01:23:55,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:23:55,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:23:55,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:23:55,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:23:55,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:54" (1/1) ... [2021-11-21 01:23:55,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:23:55,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a8b422-8da1-40d2-9578-f12a9f108bd8/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:23:55,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a8b422-8da1-40d2-9578-f12a9f108bd8/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:23:55,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a8b422-8da1-40d2-9578-f12a9f108bd8/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:23:55,963 INFO L130 BoogieDeclarations]: Found specification of procedure video_open [2021-11-21 01:23:55,963 INFO L138 BoogieDeclarations]: Found implementation of procedure video_open [2021-11-21 01:23:55,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:23:55,963 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:23:55,964 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamon [2021-11-21 01:23:55,964 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamon [2021-11-21 01:23:55,964 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_unregister_video [2021-11-21 01:23:55,964 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_unregister_video [2021-11-21 01:23:55,964 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_fmt_vid_cap [2021-11-21 01:23:55,965 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_fmt_vid_cap [2021-11-21 01:23:55,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:23:55,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:23:55,965 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_input [2021-11-21 01:23:55,966 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_input [2021-11-21 01:23:55,966 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_reqbufs [2021-11-21 01:23:55,966 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_reqbufs [2021-11-21 01:23:55,966 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_enum_fmt_vid_cap [2021-11-21 01:23:55,967 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_enum_fmt_vid_cap [2021-11-21 01:23:55,967 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 01:23:55,967 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 01:23:55,967 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_tvnorm [2021-11-21 01:23:55,967 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_tvnorm [2021-11-21 01:23:55,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_77 [2021-11-21 01:23:55,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_77 [2021-11-21 01:23:55,968 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_tvaudio [2021-11-21 01:23:55,969 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_tvaudio [2021-11-21 01:23:55,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:23:55,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:23:55,969 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_s_vid_ctrl [2021-11-21 01:23:55,969 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_s_vid_ctrl [2021-11-21 01:23:55,970 INFO L130 BoogieDeclarations]: Found specification of procedure res_free [2021-11-21 01:23:55,970 INFO L138 BoogieDeclarations]: Found implementation of procedure res_free [2021-11-21 01:23:55,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_slock_of_cx8800_dev [2021-11-21 01:23:55,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_slock_of_cx8800_dev [2021-11-21 01:23:55,971 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-21 01:23:55,971 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-21 01:23:55,971 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_to_dma [2021-11-21 01:23:55,972 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_to_dma [2021-11-21 01:23:55,972 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_shutdown [2021-11-21 01:23:55,972 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_shutdown [2021-11-21 01:23:55,972 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-21 01:23:55,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-21 01:23:55,973 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fmt_vid_cap [2021-11-21 01:23:55,974 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fmt_vid_cap [2021-11-21 01:23:55,975 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_newstation [2021-11-21 01:23:55,975 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_newstation [2021-11-21 01:23:55,975 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_std [2021-11-21 01:23:55,976 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_std [2021-11-21 01:23:55,976 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_vdev_init [2021-11-21 01:23:55,976 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_vdev_init [2021-11-21 01:23:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure video_mmap [2021-11-21 01:23:55,977 INFO L138 BoogieDeclarations]: Found implementation of procedure video_mmap [2021-11-21 01:23:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 01:23:55,977 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 01:23:55,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:23:55,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:23:55,978 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 01:23:55,979 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 01:23:55,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer [2021-11-21 01:23:55,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer [2021-11-21 01:23:55,979 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2021-11-21 01:23:55,979 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2021-11-21 01:23:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:23:55,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:23:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_poll [2021-11-21 01:23:55,980 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_poll [2021-11-21 01:23:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_frequency [2021-11-21 01:23:55,981 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_frequency [2021-11-21 01:23:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querybuf [2021-11-21 01:23:55,982 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querybuf [2021-11-21 01:23:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_register [2021-11-21 01:23:55,982 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_register [2021-11-21 01:23:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2021-11-21 01:23:55,983 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2021-11-21 01:23:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_setup [2021-11-21 01:23:55,983 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_setup [2021-11-21 01:23:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:23:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_stereo [2021-11-21 01:23:55,985 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_stereo [2021-11-21 01:23:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_vbi_fmt [2021-11-21 01:23:55,985 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_vbi_fmt [2021-11-21 01:23:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-21 01:23:55,985 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-21 01:23:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_audio_thread [2021-11-21 01:23:55,987 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_cap [2021-11-21 01:23:55,987 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_cap [2021-11-21 01:23:55,987 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2021-11-21 01:23:55,988 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2021-11-21 01:23:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:23:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2021-11-21 01:23:55,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2021-11-21 01:23:55,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:23:55,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:23:55,989 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_restart_vbi_queue [2021-11-21 01:23:55,989 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_restart_vbi_queue [2021-11-21 01:23:55,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:23:55,990 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_finidev [2021-11-21 01:23:55,990 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_finidev [2021-11-21 01:23:55,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 01:23:55,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 01:23:55,991 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2021-11-21 01:23:55,991 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2021-11-21 01:23:55,992 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_querycap [2021-11-21 01:23:55,992 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_querycap [2021-11-21 01:23:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:23:55,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:23:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_freq [2021-11-21 01:23:55,997 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_freq [2021-11-21 01:23:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 01:23:55,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 01:23:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_s_aud_ctrl [2021-11-21 01:23:55,998 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_s_aud_ctrl [2021-11-21 01:23:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure video_read [2021-11-21 01:23:55,999 INFO L138 BoogieDeclarations]: Found implementation of procedure video_read [2021-11-21 01:23:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-21 01:23:56,007 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-21 01:23:56,008 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_video_mux [2021-11-21 01:23:56,008 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_video_mux [2021-11-21 01:23:56,008 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 01:23:56,008 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 01:23:56,009 INFO L130 BoogieDeclarations]: Found specification of procedure video_is_registered [2021-11-21 01:23:56,009 INFO L138 BoogieDeclarations]: Found implementation of procedure video_is_registered [2021-11-21 01:23:56,009 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2021-11-21 01:23:56,009 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_subscribe_event [2021-11-21 01:23:56,009 INFO L130 BoogieDeclarations]: Found specification of procedure video_unregister_device [2021-11-21 01:23:56,010 INFO L138 BoogieDeclarations]: Found implementation of procedure video_unregister_device [2021-11-21 01:23:56,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:23:56,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:23:56,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:23:56,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 01:23:56,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 01:23:56,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 01:23:56,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 01:23:56,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-21 01:23:56,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-21 01:23:56,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-21 01:23:56,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-21 01:23:56,012 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_queue_sg_init [2021-11-21 01:23:56,012 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_queue_sg_init [2021-11-21 01:23:56,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:23:56,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:23:56,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:23:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:23:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure video_release [2021-11-21 01:23:56,013 INFO L138 BoogieDeclarations]: Found implementation of procedure video_release [2021-11-21 01:23:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:23:56,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:23:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:23:56,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:23:56,014 INFO L130 BoogieDeclarations]: Found specification of procedure restart_video_queue [2021-11-21 01:23:56,014 INFO L138 BoogieDeclarations]: Found implementation of procedure restart_video_queue [2021-11-21 01:23:56,014 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_qbuf [2021-11-21 01:23:56,014 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_qbuf [2021-11-21 01:23:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_wakeup [2021-11-21 01:23:56,015 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_wakeup [2021-11-21 01:23:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-21 01:23:56,015 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-21 01:23:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_s_ctrl [2021-11-21 01:23:56,015 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_s_ctrl [2021-11-21 01:23:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-21 01:23:56,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-21 01:23:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_iolock [2021-11-21 01:23:56,016 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_iolock [2021-11-21 01:23:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_enum_input [2021-11-21 01:23:56,016 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_enum_input [2021-11-21 01:23:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_sram_channel_dump [2021-11-21 01:23:56,017 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_sram_channel_dump [2021-11-21 01:23:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure video_set_drvdata [2021-11-21 01:23:56,017 INFO L138 BoogieDeclarations]: Found implementation of procedure video_set_drvdata [2021-11-21 01:23:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_tuner [2021-11-21 01:23:56,018 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_tuner [2021-11-21 01:23:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure res_check [2021-11-21 01:23:56,018 INFO L138 BoogieDeclarations]: Found implementation of procedure res_check [2021-11-21 01:23:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure format_by_fourcc [2021-11-21 01:23:56,019 INFO L138 BoogieDeclarations]: Found implementation of procedure format_by_fourcc [2021-11-21 01:23:56,019 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_risc_buffer [2021-11-21 01:23:56,019 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_risc_buffer [2021-11-21 01:23:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-21 01:23:56,020 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-21 01:23:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-21 01:23:56,020 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-21 01:23:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2021-11-21 01:23:56,020 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_event_unsubscribe [2021-11-21 01:23:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:23:56,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:23:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_risc_stopper [2021-11-21 01:23:56,021 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_risc_stopper [2021-11-21 01:23:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-21 01:23:56,022 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-21 01:23:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-21 01:23:56,022 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-21 01:23:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:23:56,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:23:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_std [2021-11-21 01:23:56,023 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_std [2021-11-21 01:23:56,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:23:56,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:23:56,023 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamoff [2021-11-21 01:23:56,023 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamoff [2021-11-21 01:23:56,024 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_sram_channel_setup [2021-11-21 01:23:56,024 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_sram_channel_setup [2021-11-21 01:23:56,024 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_free_buffer [2021-11-21 01:23:56,024 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_free_buffer [2021-11-21 01:23:56,024 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2021-11-21 01:23:56,024 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2021-11-21 01:23:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 01:23:56,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 01:23:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_enum_input [2021-11-21 01:23:56,025 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_enum_input [2021-11-21 01:23:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-21 01:23:56,025 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-21 01:23:56,026 INFO L130 BoogieDeclarations]: Found specification of procedure res_get [2021-11-21 01:23:56,026 INFO L138 BoogieDeclarations]: Found implementation of procedure res_get [2021-11-21 01:23:56,026 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_mmap_free [2021-11-21 01:23:56,026 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_mmap_free [2021-11-21 01:23:56,026 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_resume [2021-11-21 01:23:56,027 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_resume [2021-11-21 01:23:56,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_cx8800_pci_driver_exit_15_2 [2021-11-21 01:23:56,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_cx8800_pci_driver_exit_15_2 [2021-11-21 01:23:56,027 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_frequency [2021-11-21 01:23:56,027 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_frequency [2021-11-21 01:23:56,027 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-11-21 01:23:56,028 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-11-21 01:23:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-21 01:23:56,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-21 01:23:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure video_poll [2021-11-21 01:23:56,028 INFO L138 BoogieDeclarations]: Found implementation of procedure video_poll [2021-11-21 01:23:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:23:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 01:23:56,029 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 01:23:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:23:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_core_put [2021-11-21 01:23:56,030 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_core_put [2021-11-21 01:23:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_find [2021-11-21 01:23:56,035 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_find [2021-11-21 01:23:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_release [2021-11-21 01:23:56,036 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_release [2021-11-21 01:23:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure start_video_dma [2021-11-21 01:23:56,036 INFO L138 BoogieDeclarations]: Found implementation of procedure start_video_dma [2021-11-21 01:23:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:23:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_node_name [2021-11-21 01:23:56,037 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_node_name [2021-11-21 01:23:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-21 01:23:56,038 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-21 01:23:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure get_queue [2021-11-21 01:23:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queue [2021-11-21 01:23:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-21 01:23:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-21 01:23:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:23:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:23:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 01:23:56,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 01:23:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 01:23:56,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 01:23:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_dqbuf [2021-11-21 01:23:56,040 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_dqbuf [2021-11-21 01:23:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-21 01:23:56,041 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-21 01:23:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querycap [2021-11-21 01:23:56,041 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querycap [2021-11-21 01:23:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure video_register_device [2021-11-21 01:23:56,041 INFO L138 BoogieDeclarations]: Found implementation of procedure video_register_device [2021-11-21 01:23:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_78 [2021-11-21 01:23:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_78 [2021-11-21 01:23:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:23:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:23:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:23:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:23:56,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:23:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_79 [2021-11-21 01:23:56,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_79 [2021-11-21 01:23:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_input [2021-11-21 01:23:56,043 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_input [2021-11-21 01:23:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-21 01:23:56,044 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-21 01:23:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_tuner [2021-11-21 01:23:56,044 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_tuner [2021-11-21 01:23:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-21 01:23:56,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-21 01:23:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_start_vbi_dma [2021-11-21 01:23:56,045 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_start_vbi_dma [2021-11-21 01:23:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_ir_stop [2021-11-21 01:23:56,045 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_ir_stop [2021-11-21 01:23:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_register [2021-11-21 01:23:56,045 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_register [2021-11-21 01:23:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:23:56,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:23:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-21 01:23:56,046 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-21 01:23:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-21 01:23:56,046 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-21 01:23:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxw [2021-11-21 01:23:56,047 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxw [2021-11-21 01:23:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-21 01:23:56,047 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-21 01:23:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxh [2021-11-21 01:23:56,048 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxh [2021-11-21 01:23:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure get_resource [2021-11-21 01:23:56,048 INFO L138 BoogieDeclarations]: Found implementation of procedure get_resource [2021-11-21 01:23:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-21 01:23:56,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-21 01:23:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-21 01:23:56,049 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-21 01:23:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_initdev [2021-11-21 01:23:56,049 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_initdev [2021-11-21 01:23:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:23:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_slock_of_cx8800_dev [2021-11-21 01:23:56,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_slock_of_cx8800_dev [2021-11-21 01:23:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:23:56,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:23:57,745 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:23:57,757 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:23:58,223 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:24:26,719 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 01:24:26,858 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:24:28,517 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:24:28,517 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-21 01:24:28,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:24:28 BoogieIcfgContainer [2021-11-21 01:24:28,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:24:28,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:24:28,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:24:28,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:24:28,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:23:47" (1/3) ... [2021-11-21 01:24:28,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737d6151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:24:28, skipping insertion in model container [2021-11-21 01:24:28,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:54" (2/3) ... [2021-11-21 01:24:28,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737d6151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:24:28, skipping insertion in model container [2021-11-21 01:24:28,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:24:28" (3/3) ... [2021-11-21 01:24:28,534 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i [2021-11-21 01:24:28,541 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:24:28,541 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 01:24:28,611 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:24:28,619 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:24:28,619 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 01:24:28,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 2242 states, 1324 states have (on average 1.3006042296072509) internal successors, (1722), 1340 states have internal predecessors, (1722), 768 states have call successors, (768), 148 states have call predecessors, (768), 147 states have return successors, (761), 760 states have call predecessors, (761), 761 states have call successors, (761) [2021-11-21 01:24:28,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2021-11-21 01:24:28,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:24:28,753 INFO L514 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:24:28,754 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)] === [2021-11-21 01:24:28,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:24:28,760 INFO L85 PathProgramCache]: Analyzing trace with hash 76814640, now seen corresponding path program 1 times [2021-11-21 01:24:28,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:24:28,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710463136] [2021-11-21 01:24:28,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:24:28,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:24:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:24:30,440 INFO L134 CoverageAnalysis]: Checked inductivity of 9509 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9509 trivial. 0 not checked. [2021-11-21 01:24:30,442 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:24:30,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710463136] [2021-11-21 01:24:30,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710463136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:24:30,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:24:30,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:24:30,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949738704] [2021-11-21 01:24:30,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:24:30,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:24:30,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:24:30,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:24:30,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:24:30,513 INFO L87 Difference]: Start difference. First operand has 2242 states, 1324 states have (on average 1.3006042296072509) internal successors, (1722), 1340 states have internal predecessors, (1722), 768 states have call successors, (768), 148 states have call predecessors, (768), 147 states have return successors, (761), 760 states have call predecessors, (761), 761 states have call successors, (761) Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-21 01:24:37,474 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.82s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:24:39,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:24:39,869 INFO L93 Difference]: Finished difference Result 6440 states and 9455 transitions. [2021-11-21 01:24:39,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:24:39,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 515 [2021-11-21 01:24:39,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:24:40,090 INFO L225 Difference]: With dead ends: 6440 [2021-11-21 01:24:40,090 INFO L226 Difference]: Without dead ends: 4286 [2021-11-21 01:24:40,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:24:40,119 INFO L933 BasicCegarLoop]: 3451 mSDtfsCounter, 2990 mSDsluCounter, 3181 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2990 SdHoareTripleChecker+Valid, 6184 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:24:40,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2990 Valid, 6184 Invalid, 970 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 954 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2021-11-21 01:24:40,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4286 states. [2021-11-21 01:24:40,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4286 to 4281. [2021-11-21 01:24:40,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4281 states, 2553 states have (on average 1.2965139052095573) internal successors, (3310), 2585 states have internal predecessors, (3310), 1435 states have call successors, (1435), 291 states have call predecessors, (1435), 290 states have return successors, (1431), 1428 states have call predecessors, (1431), 1431 states have call successors, (1431) [2021-11-21 01:24:40,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4281 states to 4281 states and 6176 transitions. [2021-11-21 01:24:40,545 INFO L78 Accepts]: Start accepts. Automaton has 4281 states and 6176 transitions. Word has length 515 [2021-11-21 01:24:40,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:24:40,550 INFO L470 AbstractCegarLoop]: Abstraction has 4281 states and 6176 transitions. [2021-11-21 01:24:40,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-21 01:24:40,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4281 states and 6176 transitions. [2021-11-21 01:24:40,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2021-11-21 01:24:40,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:24:40,572 INFO L514 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:24:40,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:24:40,573 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)] === [2021-11-21 01:24:40,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:24:40,577 INFO L85 PathProgramCache]: Analyzing trace with hash -836954322, now seen corresponding path program 1 times [2021-11-21 01:24:40,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:24:40,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623298026] [2021-11-21 01:24:40,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:24:40,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:24:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:24:41,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2021-11-21 01:24:41,389 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:24:41,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623298026] [2021-11-21 01:24:41,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623298026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:24:41,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:24:41,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:24:41,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522412048] [2021-11-21 01:24:41,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:24:41,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:24:41,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:24:41,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:24:41,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:24:41,400 INFO L87 Difference]: Start difference. First operand 4281 states and 6176 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-21 01:24:46,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:24:46,178 INFO L93 Difference]: Finished difference Result 10287 states and 14833 transitions. [2021-11-21 01:24:46,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:24:46,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 524 [2021-11-21 01:24:46,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:24:46,245 INFO L225 Difference]: With dead ends: 10287 [2021-11-21 01:24:46,246 INFO L226 Difference]: Without dead ends: 6105 [2021-11-21 01:24:46,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:24:46,274 INFO L933 BasicCegarLoop]: 3495 mSDtfsCounter, 2820 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2820 SdHoareTripleChecker+Valid, 6212 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:24:46,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2820 Valid, 6212 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-21 01:24:46,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6105 states. [2021-11-21 01:24:46,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6105 to 6080. [2021-11-21 01:24:46,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6080 states, 3655 states have (on average 1.2990424076607388) internal successors, (4748), 3700 states have internal predecessors, (4748), 1999 states have call successors, (1999), 425 states have call predecessors, (1999), 423 states have return successors, (1995), 1986 states have call predecessors, (1995), 1995 states have call successors, (1995) [2021-11-21 01:24:46,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 8742 transitions. [2021-11-21 01:24:46,712 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 8742 transitions. Word has length 524 [2021-11-21 01:24:46,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:24:46,714 INFO L470 AbstractCegarLoop]: Abstraction has 6080 states and 8742 transitions. [2021-11-21 01:24:46,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-21 01:24:46,715 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 8742 transitions. [2021-11-21 01:24:46,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2021-11-21 01:24:46,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:24:46,737 INFO L514 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:24:46,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:24:46,738 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)] === [2021-11-21 01:24:46,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:24:46,738 INFO L85 PathProgramCache]: Analyzing trace with hash -796047328, now seen corresponding path program 1 times [2021-11-21 01:24:46,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:24:46,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845846605] [2021-11-21 01:24:46,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:24:46,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:24:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:24:47,441 INFO L134 CoverageAnalysis]: Checked inductivity of 9510 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9510 trivial. 0 not checked. [2021-11-21 01:24:47,441 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:24:47,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845846605] [2021-11-21 01:24:47,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845846605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:24:47,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:24:47,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:24:47,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142192995] [2021-11-21 01:24:47,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:24:47,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:24:47,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:24:47,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:24:47,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:24:47,447 INFO L87 Difference]: Start difference. First operand 6080 states and 8742 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-21 01:24:50,936 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:24:54,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:24:56,967 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:24:57,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:24:57,677 INFO L93 Difference]: Finished difference Result 17862 states and 25711 transitions. [2021-11-21 01:24:57,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:24:57,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 535 [2021-11-21 01:24:57,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:24:57,817 INFO L225 Difference]: With dead ends: 17862 [2021-11-21 01:24:57,817 INFO L226 Difference]: Without dead ends: 11881 [2021-11-21 01:24:57,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:24:57,865 INFO L933 BasicCegarLoop]: 3449 mSDtfsCounter, 2972 mSDsluCounter, 3223 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2972 SdHoareTripleChecker+Valid, 6216 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:24:57,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2972 Valid, 6216 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 924 Invalid, 2 Unknown, 0 Unchecked, 9.8s Time] [2021-11-21 01:24:57,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11881 states. [2021-11-21 01:24:58,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11881 to 11852. [2021-11-21 01:24:58,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11852 states, 7155 states have (on average 1.3032844164919637) internal successors, (9325), 7248 states have internal predecessors, (9325), 3856 states have call successors, (3856), 842 states have call predecessors, (3856), 838 states have return successors, (3896), 3825 states have call predecessors, (3896), 3852 states have call successors, (3896) [2021-11-21 01:24:58,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11852 states to 11852 states and 17077 transitions. [2021-11-21 01:24:58,662 INFO L78 Accepts]: Start accepts. Automaton has 11852 states and 17077 transitions. Word has length 535 [2021-11-21 01:24:58,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:24:58,664 INFO L470 AbstractCegarLoop]: Abstraction has 11852 states and 17077 transitions. [2021-11-21 01:24:58,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-21 01:24:58,666 INFO L276 IsEmpty]: Start isEmpty. Operand 11852 states and 17077 transitions. [2021-11-21 01:24:58,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2021-11-21 01:24:58,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:24:58,688 INFO L514 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:24:58,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:24:58,688 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)] === [2021-11-21 01:24:58,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:24:58,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1253381912, now seen corresponding path program 1 times [2021-11-21 01:24:58,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:24:58,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926203144] [2021-11-21 01:24:58,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:24:58,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:24:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:24:59,322 INFO L134 CoverageAnalysis]: Checked inductivity of 9514 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9514 trivial. 0 not checked. [2021-11-21 01:24:59,322 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:24:59,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926203144] [2021-11-21 01:24:59,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926203144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:24:59,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:24:59,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:24:59,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459896110] [2021-11-21 01:24:59,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:24:59,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:24:59,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:24:59,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:24:59,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:24:59,326 INFO L87 Difference]: Start difference. First operand 11852 states and 17077 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-21 01:25:02,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:25:07,413 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:25:07,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:25:07,857 INFO L93 Difference]: Finished difference Result 34854 states and 50364 transitions. [2021-11-21 01:25:07,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:25:07,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 541 [2021-11-21 01:25:07,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:25:08,061 INFO L225 Difference]: With dead ends: 34854 [2021-11-21 01:25:08,061 INFO L226 Difference]: Without dead ends: 23101 [2021-11-21 01:25:08,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:25:08,135 INFO L933 BasicCegarLoop]: 3556 mSDtfsCounter, 2965 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2965 SdHoareTripleChecker+Valid, 6300 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:25:08,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2965 Valid, 6300 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 949 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2021-11-21 01:25:08,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23101 states. [2021-11-21 01:25:09,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23101 to 23064. [2021-11-21 01:25:09,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23064 states, 13985 states have (on average 1.304683589560243) internal successors, (18246), 14149 states have internal predecessors, (18246), 7438 states have call successors, (7438), 1655 states have call predecessors, (7438), 1638 states have return successors, (7688), 7351 states have call predecessors, (7688), 7434 states have call successors, (7688) [2021-11-21 01:25:09,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23064 states to 23064 states and 33372 transitions. [2021-11-21 01:25:09,560 INFO L78 Accepts]: Start accepts. Automaton has 23064 states and 33372 transitions. Word has length 541 [2021-11-21 01:25:09,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:25:09,561 INFO L470 AbstractCegarLoop]: Abstraction has 23064 states and 33372 transitions. [2021-11-21 01:25:09,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-21 01:25:09,562 INFO L276 IsEmpty]: Start isEmpty. Operand 23064 states and 33372 transitions. [2021-11-21 01:25:09,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2021-11-21 01:25:09,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:25:09,579 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:25:09,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:25:09,580 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)] === [2021-11-21 01:25:09,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:25:09,581 INFO L85 PathProgramCache]: Analyzing trace with hash -599855989, now seen corresponding path program 1 times [2021-11-21 01:25:09,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:25:09,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103041023] [2021-11-21 01:25:09,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:25:09,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:25:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:25:10,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9847 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9847 trivial. 0 not checked. [2021-11-21 01:25:10,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:25:10,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103041023] [2021-11-21 01:25:10,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103041023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:25:10,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:25:10,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:25:10,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151209782] [2021-11-21 01:25:10,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:25:10,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:25:10,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:25:10,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:25:10,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:25:10,763 INFO L87 Difference]: Start difference. First operand 23064 states and 33372 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-21 01:25:16,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:25:19,402 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:25:22,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:25:22,327 INFO L93 Difference]: Finished difference Result 38723 states and 56052 transitions. [2021-11-21 01:25:22,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:25:22,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 561 [2021-11-21 01:25:22,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:25:22,574 INFO L225 Difference]: With dead ends: 38723 [2021-11-21 01:25:22,575 INFO L226 Difference]: Without dead ends: 38721 [2021-11-21 01:25:22,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:25:22,598 INFO L933 BasicCegarLoop]: 3458 mSDtfsCounter, 3081 mSDsluCounter, 10896 mSDsCounter, 0 mSdLazyCounter, 1865 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3092 SdHoareTripleChecker+Valid, 12970 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1865 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:25:22,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3092 Valid, 12970 Invalid, 1869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1865 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2021-11-21 01:25:22,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38721 states. [2021-11-21 01:25:25,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38721 to 38707. [2021-11-21 01:25:25,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38707 states, 23441 states have (on average 1.30570368158355) internal successors, (30607), 23733 states have internal predecessors, (30607), 12507 states have call successors, (12507), 2788 states have call predecessors, (12507), 2756 states have return successors, (12925), 12341 states have call predecessors, (12925), 12499 states have call successors, (12925) [2021-11-21 01:25:25,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38707 states to 38707 states and 56039 transitions. [2021-11-21 01:25:25,724 INFO L78 Accepts]: Start accepts. Automaton has 38707 states and 56039 transitions. Word has length 561 [2021-11-21 01:25:25,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:25:25,726 INFO L470 AbstractCegarLoop]: Abstraction has 38707 states and 56039 transitions. [2021-11-21 01:25:25,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-21 01:25:25,727 INFO L276 IsEmpty]: Start isEmpty. Operand 38707 states and 56039 transitions. [2021-11-21 01:25:25,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2021-11-21 01:25:25,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:25:25,747 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:25:25,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:25:25,748 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)] === [2021-11-21 01:25:25,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:25:25,749 INFO L85 PathProgramCache]: Analyzing trace with hash -100213606, now seen corresponding path program 1 times [2021-11-21 01:25:25,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:25:25,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538209693] [2021-11-21 01:25:25,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:25:25,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:25:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:25:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 9849 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9847 trivial. 0 not checked. [2021-11-21 01:25:26,926 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:25:26,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538209693] [2021-11-21 01:25:26,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538209693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:25:26,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:25:26,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:25:26,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474084371] [2021-11-21 01:25:26,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:25:26,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:25:26,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:25:26,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:25:26,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:25:26,930 INFO L87 Difference]: Start difference. First operand 38707 states and 56039 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-21 01:25:29,901 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:33,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:25:35,249 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:25:37,854 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:25:39,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:25:39,863 INFO L93 Difference]: Finished difference Result 38727 states and 56055 transitions. [2021-11-21 01:25:39,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:25:39,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 566 [2021-11-21 01:25:39,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:25:40,080 INFO L225 Difference]: With dead ends: 38727 [2021-11-21 01:25:40,080 INFO L226 Difference]: Without dead ends: 38725 [2021-11-21 01:25:40,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:25:40,101 INFO L933 BasicCegarLoop]: 3461 mSDtfsCounter, 3069 mSDsluCounter, 10893 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3085 SdHoareTripleChecker+Valid, 12973 SdHoareTripleChecker+Invalid, 1866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:25:40,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3085 Valid, 12973 Invalid, 1866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1861 Invalid, 3 Unknown, 0 Unchecked, 11.7s Time] [2021-11-21 01:25:40,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38725 states. [2021-11-21 01:25:42,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38725 to 38711. [2021-11-21 01:25:42,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38711 states, 23444 states have (on average 1.3056645623613718) internal successors, (30610), 23736 states have internal predecessors, (30610), 12507 states have call successors, (12507), 2789 states have call predecessors, (12507), 2757 states have return successors, (12925), 12341 states have call predecessors, (12925), 12499 states have call successors, (12925) [2021-11-21 01:25:42,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38711 states to 38711 states and 56042 transitions. [2021-11-21 01:25:42,835 INFO L78 Accepts]: Start accepts. Automaton has 38711 states and 56042 transitions. Word has length 566 [2021-11-21 01:25:42,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:25:42,836 INFO L470 AbstractCegarLoop]: Abstraction has 38711 states and 56042 transitions. [2021-11-21 01:25:42,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-21 01:25:42,837 INFO L276 IsEmpty]: Start isEmpty. Operand 38711 states and 56042 transitions. [2021-11-21 01:25:42,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2021-11-21 01:25:42,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:25:42,856 INFO L514 BasicCegarLoop]: trace histogram [51, 49, 49, 49, 49, 49, 49, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:25:42,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:25:42,856 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)] === [2021-11-21 01:25:42,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:25:42,857 INFO L85 PathProgramCache]: Analyzing trace with hash -56876864, now seen corresponding path program 1 times [2021-11-21 01:25:42,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:25:42,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769712914] [2021-11-21 01:25:42,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:25:42,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:25:43,098 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:25:43,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906612675] [2021-11-21 01:25:43,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:25:43,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:25:43,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a8b422-8da1-40d2-9578-f12a9f108bd8/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:25:43,102 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a8b422-8da1-40d2-9578-f12a9f108bd8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:25:43,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a8b422-8da1-40d2-9578-f12a9f108bd8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:25:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:25:45,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 8752 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:25:45,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:25:47,269 INFO L134 CoverageAnalysis]: Checked inductivity of 9665 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 9445 trivial. 0 not checked. [2021-11-21 01:25:47,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:25:47,270 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:25:47,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769712914] [2021-11-21 01:25:47,270 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:25:47,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906612675] [2021-11-21 01:25:47,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906612675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:25:47,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:25:47,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:25:47,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808060787] [2021-11-21 01:25:47,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:25:47,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:25:47,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:25:47,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:25:47,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:25:47,273 INFO L87 Difference]: Start difference. First operand 38711 states and 56042 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (63), 3 states have call predecessors, (63), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2021-11-21 01:25:52,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:25:53,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:25:53,783 INFO L93 Difference]: Finished difference Result 61736 states and 89368 transitions. [2021-11-21 01:25:53,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:25:53,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (63), 3 states have call predecessors, (63), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 574 [2021-11-21 01:25:53,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:25:54,048 INFO L225 Difference]: With dead ends: 61736 [2021-11-21 01:25:54,048 INFO L226 Difference]: Without dead ends: 46059 [2021-11-21 01:25:54,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:25:54,358 INFO L933 BasicCegarLoop]: 3527 mSDtfsCounter, 2709 mSDsluCounter, 3163 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2709 SdHoareTripleChecker+Valid, 6241 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:25:54,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2709 Valid, 6241 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 982 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-11-21 01:25:54,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46059 states. [2021-11-21 01:25:56,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46059 to 46055. [2021-11-21 01:25:56,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46055 states, 27939 states have (on average 1.3051648233651885) internal successors, (36465), 28269 states have internal predecessors, (36465), 14823 states have call successors, (14823), 3324 states have call predecessors, (14823), 3290 states have return successors, (15323), 14645 states have call predecessors, (15323), 14815 states have call successors, (15323) [2021-11-21 01:25:57,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46055 states to 46055 states and 66611 transitions. [2021-11-21 01:25:57,127 INFO L78 Accepts]: Start accepts. Automaton has 46055 states and 66611 transitions. Word has length 574 [2021-11-21 01:25:57,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:25:57,129 INFO L470 AbstractCegarLoop]: Abstraction has 46055 states and 66611 transitions. [2021-11-21 01:25:57,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (63), 3 states have call predecessors, (63), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2021-11-21 01:25:57,129 INFO L276 IsEmpty]: Start isEmpty. Operand 46055 states and 66611 transitions. [2021-11-21 01:25:57,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2021-11-21 01:25:57,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:25:57,158 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:25:57,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a8b422-8da1-40d2-9578-f12a9f108bd8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:25:57,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a8b422-8da1-40d2-9578-f12a9f108bd8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-21 01:25:57,384 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)] === [2021-11-21 01:25:57,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:25:57,385 INFO L85 PathProgramCache]: Analyzing trace with hash 2067630743, now seen corresponding path program 1 times [2021-11-21 01:25:57,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:25:57,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392406276] [2021-11-21 01:25:57,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:25:57,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:25:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:25:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9854 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9850 trivial. 0 not checked. [2021-11-21 01:25:58,725 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:25:58,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392406276] [2021-11-21 01:25:58,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392406276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:25:58,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:25:58,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:25:58,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434220671] [2021-11-21 01:25:58,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:25:58,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:25:58,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:25:58,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:25:58,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:25:58,729 INFO L87 Difference]: Start difference. First operand 46055 states and 66611 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-21 01:26:03,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:26:03,332 INFO L93 Difference]: Finished difference Result 46065 states and 66620 transitions. [2021-11-21 01:26:03,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:26:03,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 570 [2021-11-21 01:26:03,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:26:03,572 INFO L225 Difference]: With dead ends: 46065 [2021-11-21 01:26:03,572 INFO L226 Difference]: Without dead ends: 46063 [2021-11-21 01:26:03,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:26:03,600 INFO L933 BasicCegarLoop]: 2755 mSDtfsCounter, 3081 mSDsluCounter, 6417 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3090 SdHoareTripleChecker+Valid, 8246 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:26:03,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3090 Valid, 8246 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-21 01:26:03,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46063 states. [2021-11-21 01:26:05,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46063 to 46063. [2021-11-21 01:26:05,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46063 states, 27945 states have (on average 1.3050993022007515) internal successors, (36471), 28275 states have internal predecessors, (36471), 14823 states have call successors, (14823), 3326 states have call predecessors, (14823), 3292 states have return successors, (15323), 14645 states have call predecessors, (15323), 14815 states have call successors, (15323) [2021-11-21 01:26:06,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46063 states to 46063 states and 66617 transitions. [2021-11-21 01:26:06,165 INFO L78 Accepts]: Start accepts. Automaton has 46063 states and 66617 transitions. Word has length 570 [2021-11-21 01:26:06,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:26:06,167 INFO L470 AbstractCegarLoop]: Abstraction has 46063 states and 66617 transitions. [2021-11-21 01:26:06,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-21 01:26:06,167 INFO L276 IsEmpty]: Start isEmpty. Operand 46063 states and 66617 transitions. [2021-11-21 01:26:06,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2021-11-21 01:26:06,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:26:06,193 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:26:06,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:26:06,194 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)] === [2021-11-21 01:26:06,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:26:06,194 INFO L85 PathProgramCache]: Analyzing trace with hash 966789977, now seen corresponding path program 1 times [2021-11-21 01:26:06,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:26:06,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68899785] [2021-11-21 01:26:06,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:26:06,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:26:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:26:07,494 INFO L134 CoverageAnalysis]: Checked inductivity of 9861 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9855 trivial. 0 not checked. [2021-11-21 01:26:07,495 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:26:07,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68899785] [2021-11-21 01:26:07,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68899785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:26:07,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:26:07,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:26:07,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945724490] [2021-11-21 01:26:07,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:26:07,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:26:07,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:26:07,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:26:07,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:26:07,500 INFO L87 Difference]: Start difference. First operand 46063 states and 66617 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-21 01:26:11,102 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:26:15,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:26:20,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:26:20,173 INFO L93 Difference]: Finished difference Result 46087 states and 66637 transitions. [2021-11-21 01:26:20,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:26:20,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 576 [2021-11-21 01:26:20,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:26:20,343 INFO L225 Difference]: With dead ends: 46087 [2021-11-21 01:26:20,343 INFO L226 Difference]: Without dead ends: 46085 [2021-11-21 01:26:20,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:26:20,363 INFO L933 BasicCegarLoop]: 3461 mSDtfsCounter, 3077 mSDsluCounter, 10896 mSDsCounter, 0 mSdLazyCounter, 1866 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3085 SdHoareTripleChecker+Valid, 12973 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1866 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:26:20,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3085 Valid, 12973 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1866 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2021-11-21 01:26:20,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46085 states. [2021-11-21 01:26:22,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46085 to 46067. [2021-11-21 01:26:22,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46067 states, 27948 states have (on average 1.3050665521683127) internal successors, (36474), 28278 states have internal predecessors, (36474), 14823 states have call successors, (14823), 3327 states have call predecessors, (14823), 3293 states have return successors, (15323), 14645 states have call predecessors, (15323), 14815 states have call successors, (15323) [2021-11-21 01:26:22,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46067 states to 46067 states and 66620 transitions. [2021-11-21 01:26:22,700 INFO L78 Accepts]: Start accepts. Automaton has 46067 states and 66620 transitions. Word has length 576 [2021-11-21 01:26:22,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:26:22,701 INFO L470 AbstractCegarLoop]: Abstraction has 46067 states and 66620 transitions. [2021-11-21 01:26:22,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-21 01:26:22,701 INFO L276 IsEmpty]: Start isEmpty. Operand 46067 states and 66620 transitions. [2021-11-21 01:26:22,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2021-11-21 01:26:22,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:26:22,729 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:26:22,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:26:22,730 INFO L402 AbstractCegarLoop]: === Iteration 10 === 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)] === [2021-11-21 01:26:22,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:26:22,730 INFO L85 PathProgramCache]: Analyzing trace with hash -657266931, now seen corresponding path program 1 times [2021-11-21 01:26:22,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:26:22,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112982777] [2021-11-21 01:26:22,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:26:22,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:26:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:26:23,421 INFO L134 CoverageAnalysis]: Checked inductivity of 9845 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9842 trivial. 0 not checked. [2021-11-21 01:26:23,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:26:23,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112982777] [2021-11-21 01:26:23,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112982777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:26:23,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:26:23,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:26:23,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559996916] [2021-11-21 01:26:23,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:26:23,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:26:23,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:26:23,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:26:23,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:26:23,425 INFO L87 Difference]: Start difference. First operand 46067 states and 66620 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2021-11-21 01:26:27,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:26:30,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:26:30,721 INFO L93 Difference]: Finished difference Result 92511 states and 133938 transitions. [2021-11-21 01:26:30,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:26:30,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) Word has length 575 [2021-11-21 01:26:30,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:26:30,990 INFO L225 Difference]: With dead ends: 92511 [2021-11-21 01:26:30,990 INFO L226 Difference]: Without dead ends: 61175 [2021-11-21 01:26:31,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:26:31,288 INFO L933 BasicCegarLoop]: 5092 mSDtfsCounter, 2815 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2815 SdHoareTripleChecker+Valid, 7807 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:26:31,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2815 Valid, 7807 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-21 01:26:31,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61175 states. [2021-11-21 01:26:33,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61175 to 61099. [2021-11-21 01:26:33,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61099 states, 37090 states have (on average 1.305581019142626) internal successors, (48424), 37532 states have internal predecessors, (48424), 19623 states have call successors, (19623), 4429 states have call predecessors, (19623), 4383 states have return successors, (20287), 19377 states have call predecessors, (20287), 19615 states have call successors, (20287) [2021-11-21 01:26:34,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61099 states to 61099 states and 88334 transitions. [2021-11-21 01:26:34,348 INFO L78 Accepts]: Start accepts. Automaton has 61099 states and 88334 transitions. Word has length 575 [2021-11-21 01:26:34,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:26:34,349 INFO L470 AbstractCegarLoop]: Abstraction has 61099 states and 88334 transitions. [2021-11-21 01:26:34,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2021-11-21 01:26:34,350 INFO L276 IsEmpty]: Start isEmpty. Operand 61099 states and 88334 transitions. [2021-11-21 01:26:34,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2021-11-21 01:26:34,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:26:34,377 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:26:34,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:26:34,378 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)] === [2021-11-21 01:26:34,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:26:34,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1033509705, now seen corresponding path program 1 times [2021-11-21 01:26:34,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:26:34,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421963244] [2021-11-21 01:26:34,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:26:34,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:26:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:26:35,269 INFO L134 CoverageAnalysis]: Checked inductivity of 9878 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9870 trivial. 0 not checked. [2021-11-21 01:26:35,270 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:26:35,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421963244] [2021-11-21 01:26:35,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421963244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:26:35,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:26:35,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:26:35,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698304328] [2021-11-21 01:26:35,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:26:35,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:26:35,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:26:35,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:26:35,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:26:35,274 INFO L87 Difference]: Start difference. First operand 61099 states and 88334 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-21 01:26:41,207 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:26:45,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:26:45,940 INFO L93 Difference]: Finished difference Result 61127 states and 88358 transitions. [2021-11-21 01:26:45,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:26:45,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 580 [2021-11-21 01:26:45,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:26:46,176 INFO L225 Difference]: With dead ends: 61127 [2021-11-21 01:26:46,176 INFO L226 Difference]: Without dead ends: 61125 [2021-11-21 01:26:46,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:26:46,200 INFO L933 BasicCegarLoop]: 3461 mSDtfsCounter, 3076 mSDsluCounter, 10896 mSDsCounter, 0 mSdLazyCounter, 1866 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3083 SdHoareTripleChecker+Valid, 12973 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1866 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:26:46,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3083 Valid, 12973 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1866 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2021-11-21 01:26:46,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61125 states. [2021-11-21 01:26:49,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61125 to 61103. [2021-11-21 01:26:49,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61103 states, 37093 states have (on average 1.3055563044240153) internal successors, (48427), 37535 states have internal predecessors, (48427), 19623 states have call successors, (19623), 4430 states have call predecessors, (19623), 4384 states have return successors, (20287), 19377 states have call predecessors, (20287), 19615 states have call successors, (20287) [2021-11-21 01:26:49,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61103 states to 61103 states and 88337 transitions. [2021-11-21 01:26:49,398 INFO L78 Accepts]: Start accepts. Automaton has 61103 states and 88337 transitions. Word has length 580 [2021-11-21 01:26:49,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:26:49,400 INFO L470 AbstractCegarLoop]: Abstraction has 61103 states and 88337 transitions. [2021-11-21 01:26:49,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-21 01:26:49,400 INFO L276 IsEmpty]: Start isEmpty. Operand 61103 states and 88337 transitions. [2021-11-21 01:26:49,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2021-11-21 01:26:49,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:26:49,433 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:26:49,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 01:26:49,434 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)] === [2021-11-21 01:26:49,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:26:49,435 INFO L85 PathProgramCache]: Analyzing trace with hash 2030337774, now seen corresponding path program 1 times [2021-11-21 01:26:49,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:26:49,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605666909] [2021-11-21 01:26:49,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:26:49,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:26:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:26:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 9896 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9886 trivial. 0 not checked. [2021-11-21 01:26:50,451 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:26:50,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605666909] [2021-11-21 01:26:50,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605666909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:26:50,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:26:50,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:26:50,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155471379] [2021-11-21 01:26:50,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:26:50,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:26:50,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:26:50,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:26:50,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:26:50,457 INFO L87 Difference]: Start difference. First operand 61103 states and 88337 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-21 01:26:54,832 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:26:58,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:26:58,695 INFO L93 Difference]: Finished difference Result 61113 states and 88346 transitions. [2021-11-21 01:26:58,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:26:58,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 585 [2021-11-21 01:26:58,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:26:58,933 INFO L225 Difference]: With dead ends: 61113 [2021-11-21 01:26:58,934 INFO L226 Difference]: Without dead ends: 61111 [2021-11-21 01:26:58,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:26:58,963 INFO L933 BasicCegarLoop]: 2755 mSDtfsCounter, 3081 mSDsluCounter, 6417 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3087 SdHoareTripleChecker+Valid, 8246 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:26:58,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3087 Valid, 8246 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-11-21 01:26:59,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61111 states.