./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174b9916-706f-437e-89ea-28ca57f489e3/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174b9916-706f-437e-89ea-28ca57f489e3/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174b9916-706f-437e-89ea-28ca57f489e3/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174b9916-706f-437e-89ea-28ca57f489e3/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174b9916-706f-437e-89ea-28ca57f489e3/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174b9916-706f-437e-89ea-28ca57f489e3/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6a79b35c65887feb0e3310d99b98c096a3638844b86132f83b5aa5c0d07bcad8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:45:02,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:45:02,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:45:02,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:45:02,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:45:02,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:45:02,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:45:02,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:45:02,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:45:02,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:45:02,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:45:02,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:45:02,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:45:02,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:45:02,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:45:02,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:45:02,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:45:02,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:45:02,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:45:02,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:45:02,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:45:02,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:45:02,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:45:02,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:45:02,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:45:02,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:45:02,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:45:02,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:45:02,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:45:02,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:45:02,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:45:02,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:45:02,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:45:02,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:45:02,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:45:02,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:45:02,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:45:02,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:45:02,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:45:02,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:45:02,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:45:02,737 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174b9916-706f-437e-89ea-28ca57f489e3/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:45:02,777 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:45:02,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:45:02,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:45:02,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:45:02,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:45:02,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:45:02,779 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:45:02,779 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:45:02,780 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:45:02,780 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:45:02,780 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:45:02,780 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:45:02,780 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:45:02,781 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:45:02,781 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:45:02,781 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:45:02,781 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:45:02,782 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:45:02,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:45:02,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:45:02,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:45:02,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:45:02,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:45:02,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:45:02,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:45:02,784 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:45:02,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:45:02,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:45:02,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:45:02,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:45:02,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:45:02,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:45:02,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:45:02,786 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:45:02,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:45:02,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:45:02,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:45:02,797 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:45:02,797 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_174b9916-706f-437e-89ea-28ca57f489e3/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174b9916-706f-437e-89ea-28ca57f489e3/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a79b35c65887feb0e3310d99b98c096a3638844b86132f83b5aa5c0d07bcad8 [2021-11-23 02:45:03,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:45:03,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:45:03,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:45:03,147 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:45:03,148 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:45:03,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174b9916-706f-437e-89ea-28ca57f489e3/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i [2021-11-23 02:45:03,246 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174b9916-706f-437e-89ea-28ca57f489e3/bin/utaipan-EQgc7hIp5V/data/92b2a48b3/fcf19153ac97401f8605408dfa6ce24a/FLAG52fe67791 [2021-11-23 02:45:04,350 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:45:04,350 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174b9916-706f-437e-89ea-28ca57f489e3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i [2021-11-23 02:45:04,426 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174b9916-706f-437e-89ea-28ca57f489e3/bin/utaipan-EQgc7hIp5V/data/92b2a48b3/fcf19153ac97401f8605408dfa6ce24a/FLAG52fe67791 [2021-11-23 02:45:04,646 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174b9916-706f-437e-89ea-28ca57f489e3/bin/utaipan-EQgc7hIp5V/data/92b2a48b3/fcf19153ac97401f8605408dfa6ce24a [2021-11-23 02:45:04,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:45:04,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:45:04,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:45:04,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:45:04,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:45:04,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:45:04" (1/1) ... [2021-11-23 02:45:04,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@416ff1c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:04, skipping insertion in model container [2021-11-23 02:45:04,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:45:04" (1/1) ... [2021-11-23 02:45:04,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:45:04,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:45:09,165 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_174b9916-706f-437e-89ea-28ca57f489e3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490366,490379] [2021-11-23 02:45:09,168 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_174b9916-706f-437e-89ea-28ca57f489e3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490535,490548] [2021-11-23 02:45:09,169 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_174b9916-706f-437e-89ea-28ca57f489e3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490702,490715] [2021-11-23 02:45:09,170 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_174b9916-706f-437e-89ea-28ca57f489e3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490870,490883] [2021-11-23 02:45:09,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:45:09,237 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:45:09,794 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_174b9916-706f-437e-89ea-28ca57f489e3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490366,490379] [2021-11-23 02:45:09,795 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_174b9916-706f-437e-89ea-28ca57f489e3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490535,490548] [2021-11-23 02:45:09,795 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_174b9916-706f-437e-89ea-28ca57f489e3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490702,490715] [2021-11-23 02:45:09,797 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_174b9916-706f-437e-89ea-28ca57f489e3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490870,490883] [2021-11-23 02:45:09,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:45:10,175 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:45:10,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:10 WrapperNode [2021-11-23 02:45:10,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:45:10,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:45:10,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:45:10,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:45:10,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:10" (1/1) ... [2021-11-23 02:45:10,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:10" (1/1) ... [2021-11-23 02:45:10,843 INFO L137 Inliner]: procedures = 473, calls = 4636, calls flagged for inlining = 228, calls inlined = 198, statements flattened = 8920 [2021-11-23 02:45:10,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:45:10,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:45:10,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:45:10,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:45:10,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:10" (1/1) ... [2021-11-23 02:45:10,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:10" (1/1) ... [2021-11-23 02:45:10,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:10" (1/1) ... [2021-11-23 02:45:10,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:10" (1/1) ... [2021-11-23 02:45:11,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:10" (1/1) ... [2021-11-23 02:45:11,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:10" (1/1) ... [2021-11-23 02:45:11,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:10" (1/1) ... [2021-11-23 02:45:11,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:45:11,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:45:11,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:45:11,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:45:11,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:10" (1/1) ... [2021-11-23 02:45:11,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:45:11,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174b9916-706f-437e-89ea-28ca57f489e3/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:45:11,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174b9916-706f-437e-89ea-28ca57f489e3/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:45:11,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174b9916-706f-437e-89ea-28ca57f489e3/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:45:11,250 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_reset [2021-11-23 02:45:11,251 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_reset [2021-11-23 02:45:11,251 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2021-11-23 02:45:11,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2021-11-23 02:45:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_stop [2021-11-23 02:45:11,340 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_stop [2021-11-23 02:45:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_config_parameter_str [2021-11-23 02:45:11,340 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_config_parameter_str [2021-11-23 02:45:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:45:11,341 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:45:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_inform_bss [2021-11-23 02:45:11,341 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_inform_bss [2021-11-23 02:45:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_pause_rx [2021-11-23 02:45:11,341 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_pause_rx [2021-11-23 02:45:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:45:11,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:45:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_tx_fixup [2021-11-23 02:45:11,341 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_tx_fixup [2021-11-23 02:45:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:45:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:45:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_bind [2021-11-23 02:45:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_bind [2021-11-23 02:45:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_set_multicast_list [2021-11-23 02:45:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_set_multicast_list [2021-11-23 02:45:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_purge_paused_rxq [2021-11-23 02:45:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_purge_paused_rxq [2021-11-23 02:45:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_unbind [2021-11-23 02:45:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_unbind [2021-11-23 02:45:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure set_encr_mode [2021-11-23 02:45:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure set_encr_mode [2021-11-23 02:45:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure get_rndis_wlan_priv [2021-11-23 02:45:11,343 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rndis_wlan_priv [2021-11-23 02:45:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 02:45:11,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 02:45:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2021-11-23 02:45:11,343 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2021-11-23 02:45:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-23 02:45:11,343 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-23 02:45:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 02:45:11,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 02:45:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:45:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure set_infra_mode [2021-11-23 02:45:11,344 INFO L138 BoogieDeclarations]: Found implementation of procedure set_infra_mode [2021-11-23 02:45:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_command [2021-11-23 02:45:11,344 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_command [2021-11-23 02:45:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_scan_done [2021-11-23 02:45:11,344 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_scan_done [2021-11-23 02:45:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-23 02:45:11,345 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-23 02:45:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 02:45:11,345 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 02:45:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_fill_station_info [2021-11-23 02:45:11,345 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_fill_station_info [2021-11-23 02:45:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure unknown_early_init [2021-11-23 02:45:11,345 INFO L138 BoogieDeclarations]: Found implementation of procedure unknown_early_init [2021-11-23 02:45:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure disassociate [2021-11-23 02:45:11,346 INFO L138 BoogieDeclarations]: Found implementation of procedure disassociate [2021-11-23 02:45:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2021-11-23 02:45:11,346 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2021-11-23 02:45:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:45:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_query_oid [2021-11-23 02:45:11,346 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_query_oid [2021-11-23 02:45:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2021-11-23 02:45:11,346 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2021-11-23 02:45:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:45:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 02:45:11,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 02:45:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2021-11-23 02:45:11,347 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2021-11-23 02:45:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_free [2021-11-23 02:45:11,347 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_free [2021-11-23 02:45:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:45:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure is_wpa_key [2021-11-23 02:45:11,348 INFO L138 BoogieDeclarations]: Found implementation of procedure is_wpa_key [2021-11-23 02:45:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:45:11,348 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:45:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 02:45:11,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 02:45:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_priv [2021-11-23 02:45:11,348 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_priv [2021-11-23 02:45:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 02:45:11,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 02:45:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_check_bssid_list [2021-11-23 02:45:11,349 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_check_bssid_list [2021-11-23 02:45:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure __toupper [2021-11-23 02:45:11,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __toupper [2021-11-23 02:45:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:45:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320b_early_init [2021-11-23 02:45:11,349 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320b_early_init [2021-11-23 02:45:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure set_channel [2021-11-23 02:45:11,350 INFO L138 BoogieDeclarations]: Found implementation of procedure set_channel [2021-11-23 02:45:11,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 02:45:11,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 02:45:11,350 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_status [2021-11-23 02:45:11,350 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_status [2021-11-23 02:45:11,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-23 02:45:11,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-23 02:45:11,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:45:11,350 INFO L130 BoogieDeclarations]: Found specification of procedure level_to_qual [2021-11-23 02:45:11,350 INFO L138 BoogieDeclarations]: Found implementation of procedure level_to_qual [2021-11-23 02:45:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 02:45:11,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 02:45:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure set_essid [2021-11-23 02:45:11,351 INFO L138 BoogieDeclarations]: Found implementation of procedure set_essid [2021-11-23 02:45:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:45:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_put_bss [2021-11-23 02:45:11,351 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_put_bss [2021-11-23 02:45:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_start_bssid_list_scan [2021-11-23 02:45:11,351 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_start_bssid_list_scan [2021-11-23 02:45:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:45:11,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:45:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2021-11-23 02:45:11,352 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2021-11-23 02:45:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_copy_module_params [2021-11-23 02:45:11,352 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_copy_module_params [2021-11-23 02:45:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-23 02:45:11,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-23 02:45:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure set_auth_mode [2021-11-23 02:45:11,353 INFO L138 BoogieDeclarations]: Found implementation of procedure set_auth_mode [2021-11-23 02:45:11,353 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-11-23 02:45:11,353 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-11-23 02:45:11,353 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 02:45:11,353 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 02:45:11,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:45:11,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:45:11,353 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 02:45:11,353 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 02:45:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-23 02:45:11,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-23 02:45:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:45:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:45:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:45:11,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:45:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2021-11-23 02:45:11,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2021-11-23 02:45:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-23 02:45:11,354 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-23 02:45:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_cipher_to_alg [2021-11-23 02:45:11,355 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_cipher_to_alg [2021-11-23 02:45:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:45:11,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:45:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-23 02:45:11,355 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-23 02:45:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_channel [2021-11-23 02:45:11,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_channel [2021-11-23 02:45:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-23 02:45:11,355 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-23 02:45:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure add_wep_key [2021-11-23 02:45:11,355 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wep_key [2021-11-23 02:45:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2021-11-23 02:45:11,355 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2021-11-23 02:45:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure is_broadcast_ether_addr [2021-11-23 02:45:11,356 INFO L138 BoogieDeclarations]: Found implementation of procedure is_broadcast_ether_addr [2021-11-23 02:45:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 02:45:11,356 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 02:45:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure set_bssid [2021-11-23 02:45:11,356 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bssid [2021-11-23 02:45:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:45:11,356 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:45:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-23 02:45:11,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-23 02:45:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-23 02:45:11,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-23 02:45:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:45:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 02:45:11,357 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 02:45:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bssid [2021-11-23 02:45:11,357 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bssid [2021-11-23 02:45:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:45:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure set_device_pmkids [2021-11-23 02:45:11,358 INFO L138 BoogieDeclarations]: Found implementation of procedure set_device_pmkids [2021-11-23 02:45:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure get_device_pmkids [2021-11-23 02:45:11,358 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device_pmkids [2021-11-23 02:45:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure netif_addr_unlock_bh [2021-11-23 02:45:11,358 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_addr_unlock_bh [2021-11-23 02:45:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-23 02:45:11,358 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-23 02:45:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:45:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure next_bssid_list_item [2021-11-23 02:45:11,359 INFO L138 BoogieDeclarations]: Found implementation of procedure next_bssid_list_item [2021-11-23 02:45:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 02:45:11,359 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 02:45:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure set_priv_filter [2021-11-23 02:45:11,359 INFO L138 BoogieDeclarations]: Found implementation of procedure set_priv_filter [2021-11-23 02:45:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-23 02:45:11,359 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-23 02:45:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 02:45:11,359 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 02:45:11,360 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_wiphy_params [2021-11-23 02:45:11,360 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_wiphy_params [2021-11-23 02:45:11,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 02:45:11,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 02:45:11,360 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-23 02:45:11,360 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-23 02:45:11,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_7_4 [2021-11-23 02:45:11,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_7_4 [2021-11-23 02:45:11,360 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-11-23 02:45:11,360 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-11-23 02:45:11,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 02:45:11,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 02:45:11,361 INFO L130 BoogieDeclarations]: Found specification of procedure oid_to_string [2021-11-23 02:45:11,361 INFO L138 BoogieDeclarations]: Found implementation of procedure oid_to_string [2021-11-23 02:45:11,361 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2021-11-23 02:45:11,361 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2021-11-23 02:45:11,361 INFO L130 BoogieDeclarations]: Found specification of procedure deauthenticate [2021-11-23 02:45:11,361 INFO L138 BoogieDeclarations]: Found implementation of procedure deauthenticate [2021-11-23 02:45:11,362 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:45:11,362 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:45:11,362 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320a_early_init [2021-11-23 02:45:11,362 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320a_early_init [2021-11-23 02:45:11,362 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_michael_mic_failure [2021-11-23 02:45:11,362 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_michael_mic_failure [2021-11-23 02:45:11,362 INFO L130 BoogieDeclarations]: Found specification of procedure set_default_iw_params [2021-11-23 02:45:11,362 INFO L138 BoogieDeclarations]: Found implementation of procedure set_default_iw_params [2021-11-23 02:45:11,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:45:11,363 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_error_status [2021-11-23 02:45:11,363 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_error_status [2021-11-23 02:45:11,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:45:11,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:45:11,363 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume_rx [2021-11-23 02:45:11,363 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume_rx [2021-11-23 02:45:11,363 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2021-11-23 02:45:11,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2021-11-23 02:45:11,363 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-23 02:45:11,364 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-23 02:45:11,364 INFO L130 BoogieDeclarations]: Found specification of procedure get_bcm4320_power_dbm [2021-11-23 02:45:11,364 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bcm4320_power_dbm [2021-11-23 02:45:11,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 02:45:11,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 02:45:11,364 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-23 02:45:11,364 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-23 02:45:11,364 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_rx_fixup [2021-11-23 02:45:11,364 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_rx_fixup [2021-11-23 02:45:11,365 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_oid [2021-11-23 02:45:11,365 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_oid [2021-11-23 02:45:11,365 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_indication [2021-11-23 02:45:11,365 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_indication [2021-11-23 02:45:11,365 INFO L130 BoogieDeclarations]: Found specification of procedure get_bssid [2021-11-23 02:45:11,365 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bssid [2021-11-23 02:45:11,365 INFO L130 BoogieDeclarations]: Found specification of procedure is_associated [2021-11-23 02:45:11,365 INFO L138 BoogieDeclarations]: Found implementation of procedure is_associated [2021-11-23 02:45:11,365 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-23 02:45:11,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:45:11,366 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-23 02:45:11,366 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-23 02:45:11,366 INFO L130 BoogieDeclarations]: Found specification of procedure debug_print_pmkids [2021-11-23 02:45:11,366 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_print_pmkids [2021-11-23 02:45:11,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 02:45:11,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 02:45:12,474 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:45:12,478 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:45:13,105 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:45:33,364 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 02:45:33,739 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:45:35,135 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:45:35,135 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:45:35,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:45:35 BoogieIcfgContainer [2021-11-23 02:45:35,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:45:35,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:45:35,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:45:35,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:45:35,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:45:04" (1/3) ... [2021-11-23 02:45:35,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a05754a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:45:35, skipping insertion in model container [2021-11-23 02:45:35,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:10" (2/3) ... [2021-11-23 02:45:35,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a05754a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:45:35, skipping insertion in model container [2021-11-23 02:45:35,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:45:35" (3/3) ... [2021-11-23 02:45:35,154 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i [2021-11-23 02:45:35,161 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:45:35,161 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-23 02:45:35,242 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:45:35,249 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:45:35,249 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 02:45:35,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 2039 states, 1232 states have (on average 1.3133116883116882) internal successors, (1618), 1236 states have internal predecessors, (1618), 689 states have call successors, (689), 116 states have call predecessors, (689), 115 states have return successors, (681), 681 states have call predecessors, (681), 681 states have call successors, (681) [2021-11-23 02:45:35,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2021-11-23 02:45:35,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:45:35,358 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 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] [2021-11-23 02:45:35,359 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:45:35,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:45:35,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1193229731, now seen corresponding path program 1 times [2021-11-23 02:45:35,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:45:35,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975673021] [2021-11-23 02:45:35,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:45:35,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:45:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:45:36,518 INFO L134 CoverageAnalysis]: Checked inductivity of 5115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5115 trivial. 0 not checked. [2021-11-23 02:45:36,519 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:45:36,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975673021] [2021-11-23 02:45:36,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975673021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:45:36,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:45:36,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:45:36,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605834302] [2021-11-23 02:45:36,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:45:36,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:45:36,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:45:36,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:45:36,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:45:36,566 INFO L87 Difference]: Start difference. First operand has 2039 states, 1232 states have (on average 1.3133116883116882) internal successors, (1618), 1236 states have internal predecessors, (1618), 689 states have call successors, (689), 116 states have call predecessors, (689), 115 states have return successors, (681), 681 states have call predecessors, (681), 681 states have call successors, (681) Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-23 02:45:40,152 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:42,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:44,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:46,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:45:46,294 INFO L93 Difference]: Finished difference Result 5880 states and 8680 transitions. [2021-11-23 02:45:46,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:45:46,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 385 [2021-11-23 02:45:46,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:45:46,381 INFO L225 Difference]: With dead ends: 5880 [2021-11-23 02:45:46,382 INFO L226 Difference]: Without dead ends: 3902 [2021-11-23 02:45:46,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:45:46,413 INFO L933 BasicCegarLoop]: 3209 mSDtfsCounter, 2766 mSDsluCounter, 2913 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2773 SdHoareTripleChecker+Valid, 5705 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:45:46,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2773 Valid, 5705 Invalid, 925 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 909 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2021-11-23 02:45:46,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3902 states. [2021-11-23 02:45:46,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3902 to 3898. [2021-11-23 02:45:46,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3898 states, 2380 states have (on average 1.3096638655462185) internal successors, (3117), 2387 states have internal predecessors, (3117), 1289 states have call successors, (1289), 227 states have call predecessors, (1289), 226 states have return successors, (1292), 1285 states have call predecessors, (1292), 1285 states have call successors, (1292) [2021-11-23 02:45:46,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3898 states to 3898 states and 5698 transitions. [2021-11-23 02:45:46,981 INFO L78 Accepts]: Start accepts. Automaton has 3898 states and 5698 transitions. Word has length 385 [2021-11-23 02:45:46,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:45:46,984 INFO L470 AbstractCegarLoop]: Abstraction has 3898 states and 5698 transitions. [2021-11-23 02:45:46,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-23 02:45:46,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3898 states and 5698 transitions. [2021-11-23 02:45:47,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2021-11-23 02:45:47,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:45:47,012 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:45:47,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:45:47,012 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:45:47,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:45:47,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1790696617, now seen corresponding path program 1 times [2021-11-23 02:45:47,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:45:47,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625950790] [2021-11-23 02:45:47,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:45:47,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:45:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:45:47,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2021-11-23 02:45:47,662 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:45:47,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625950790] [2021-11-23 02:45:47,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625950790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:45:47,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:45:47,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:45:47,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398699121] [2021-11-23 02:45:47,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:45:47,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:45:47,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:45:47,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:45:47,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:45:47,668 INFO L87 Difference]: Start difference. First operand 3898 states and 5698 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, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-23 02:45:51,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:53,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:55,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:57,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:45:57,357 INFO L93 Difference]: Finished difference Result 9573 states and 13978 transitions. [2021-11-23 02:45:57,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:45:57,360 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, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 423 [2021-11-23 02:45:57,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:45:57,418 INFO L225 Difference]: With dead ends: 9573 [2021-11-23 02:45:57,418 INFO L226 Difference]: Without dead ends: 5748 [2021-11-23 02:45:57,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:45:57,448 INFO L933 BasicCegarLoop]: 3196 mSDtfsCounter, 2732 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2739 SdHoareTripleChecker+Valid, 5687 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:45:57,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2739 Valid, 5687 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 911 Invalid, 3 Unknown, 0 Unchecked, 9.2s Time] [2021-11-23 02:45:57,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5748 states. [2021-11-23 02:45:57,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5748 to 5722. [2021-11-23 02:45:57,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5722 states, 3508 states have (on average 1.3078677309007982) internal successors, (4588), 3521 states have internal predecessors, (4588), 1869 states have call successors, (1869), 343 states have call predecessors, (1869), 342 states have return successors, (1879), 1860 states have call predecessors, (1879), 1865 states have call successors, (1879) [2021-11-23 02:45:57,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5722 states to 5722 states and 8336 transitions. [2021-11-23 02:45:57,811 INFO L78 Accepts]: Start accepts. Automaton has 5722 states and 8336 transitions. Word has length 423 [2021-11-23 02:45:57,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:45:57,814 INFO L470 AbstractCegarLoop]: Abstraction has 5722 states and 8336 transitions. [2021-11-23 02:45:57,814 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, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-23 02:45:57,815 INFO L276 IsEmpty]: Start isEmpty. Operand 5722 states and 8336 transitions. [2021-11-23 02:45:57,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-11-23 02:45:57,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:45:57,834 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:45:57,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:45:57,835 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:45:57,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:45:57,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1404737944, now seen corresponding path program 1 times [2021-11-23 02:45:57,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:45:57,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631225040] [2021-11-23 02:45:57,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:45:57,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:45:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:45:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2021-11-23 02:45:58,355 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:45:58,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631225040] [2021-11-23 02:45:58,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631225040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:45:58,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:45:58,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:45:58,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566053744] [2021-11-23 02:45:58,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:45:58,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:45:58,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:45:58,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:45:58,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:45:58,359 INFO L87 Difference]: Start difference. First operand 5722 states and 8336 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-23 02:46:02,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:04,877 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:06,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:07,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:07,908 INFO L93 Difference]: Finished difference Result 16754 states and 24405 transitions. [2021-11-23 02:46:07,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:46:07,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 431 [2021-11-23 02:46:07,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:08,029 INFO L225 Difference]: With dead ends: 16754 [2021-11-23 02:46:08,030 INFO L226 Difference]: Without dead ends: 11105 [2021-11-23 02:46:08,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:46:08,076 INFO L933 BasicCegarLoop]: 3231 mSDtfsCounter, 2687 mSDsluCounter, 2916 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2694 SdHoareTripleChecker+Valid, 5726 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:08,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2694 Valid, 5726 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 920 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2021-11-23 02:46:08,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11105 states. [2021-11-23 02:46:08,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11105 to 11075. [2021-11-23 02:46:08,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11075 states, 6813 states have (on average 1.3058858065463086) internal successors, (8897), 6843 states have internal predecessors, (8897), 3590 states have call successors, (3590), 670 states have call predecessors, (3590), 669 states have return successors, (3621), 3567 states have call predecessors, (3621), 3586 states have call successors, (3621) [2021-11-23 02:46:08,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11075 states to 11075 states and 16108 transitions. [2021-11-23 02:46:08,777 INFO L78 Accepts]: Start accepts. Automaton has 11075 states and 16108 transitions. Word has length 431 [2021-11-23 02:46:08,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:08,778 INFO L470 AbstractCegarLoop]: Abstraction has 11075 states and 16108 transitions. [2021-11-23 02:46:08,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-23 02:46:08,779 INFO L276 IsEmpty]: Start isEmpty. Operand 11075 states and 16108 transitions. [2021-11-23 02:46:08,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2021-11-23 02:46:08,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:08,802 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:08,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:46:08,802 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:46:08,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:08,803 INFO L85 PathProgramCache]: Analyzing trace with hash -507529628, now seen corresponding path program 1 times [2021-11-23 02:46:08,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:08,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594983927] [2021-11-23 02:46:08,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:08,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2021-11-23 02:46:09,301 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:09,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594983927] [2021-11-23 02:46:09,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594983927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:09,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:09,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:46:09,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781398316] [2021-11-23 02:46:09,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:09,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:46:09,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:09,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:46:09,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:46:09,304 INFO L87 Difference]: Start difference. First operand 11075 states and 16108 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-23 02:46:12,341 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:15,118 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:17,189 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:18,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:18,420 INFO L93 Difference]: Finished difference Result 29089 states and 42252 transitions. [2021-11-23 02:46:18,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:46:18,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 424 [2021-11-23 02:46:18,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:18,574 INFO L225 Difference]: With dead ends: 29089 [2021-11-23 02:46:18,574 INFO L226 Difference]: Without dead ends: 18087 [2021-11-23 02:46:18,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:46:18,651 INFO L933 BasicCegarLoop]: 3232 mSDtfsCounter, 2731 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2738 SdHoareTripleChecker+Valid, 5723 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:18,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2738 Valid, 5723 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 925 Invalid, 3 Unknown, 0 Unchecked, 8.6s Time] [2021-11-23 02:46:18,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18087 states. [2021-11-23 02:46:19,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18087 to 18059. [2021-11-23 02:46:19,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18059 states, 11138 states have (on average 1.3036451786676244) internal successors, (14520), 11196 states have internal predecessors, (14520), 5800 states have call successors, (5800), 1119 states have call predecessors, (5800), 1118 states have return successors, (5838), 5753 states have call predecessors, (5838), 5796 states have call successors, (5838) [2021-11-23 02:46:19,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18059 states to 18059 states and 26158 transitions. [2021-11-23 02:46:19,844 INFO L78 Accepts]: Start accepts. Automaton has 18059 states and 26158 transitions. Word has length 424 [2021-11-23 02:46:19,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:19,846 INFO L470 AbstractCegarLoop]: Abstraction has 18059 states and 26158 transitions. [2021-11-23 02:46:19,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-23 02:46:19,847 INFO L276 IsEmpty]: Start isEmpty. Operand 18059 states and 26158 transitions. [2021-11-23 02:46:19,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2021-11-23 02:46:19,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:19,868 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:19,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:46:19,868 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:46:19,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:19,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1098935364, now seen corresponding path program 1 times [2021-11-23 02:46:19,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:19,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083753324] [2021-11-23 02:46:19,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:19,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2021-11-23 02:46:20,274 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:20,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083753324] [2021-11-23 02:46:20,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083753324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:20,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:20,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:46:20,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625152411] [2021-11-23 02:46:20,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:20,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:46:20,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:20,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:46:20,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:46:20,277 INFO L87 Difference]: Start difference. First operand 18059 states and 26158 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, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-23 02:46:23,084 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:26,389 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:28,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:29,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:29,980 INFO L93 Difference]: Finished difference Result 49131 states and 71202 transitions. [2021-11-23 02:46:29,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:46:29,980 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, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 425 [2021-11-23 02:46:29,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:30,202 INFO L225 Difference]: With dead ends: 49131 [2021-11-23 02:46:30,202 INFO L226 Difference]: Without dead ends: 31145 [2021-11-23 02:46:30,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:46:30,293 INFO L933 BasicCegarLoop]: 3435 mSDtfsCounter, 2730 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2737 SdHoareTripleChecker+Valid, 5926 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:30,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2737 Valid, 5926 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 987 Invalid, 3 Unknown, 0 Unchecked, 8.8s Time] [2021-11-23 02:46:30,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31145 states. [2021-11-23 02:46:32,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31145 to 31117. [2021-11-23 02:46:32,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31117 states, 19244 states have (on average 1.302431926834338) internal successors, (25064), 19358 states have internal predecessors, (25064), 9937 states have call successors, (9937), 1934 states have call predecessors, (9937), 1933 states have return successors, (10017), 9842 states have call predecessors, (10017), 9933 states have call successors, (10017) [2021-11-23 02:46:32,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31117 states to 31117 states and 45018 transitions. [2021-11-23 02:46:32,245 INFO L78 Accepts]: Start accepts. Automaton has 31117 states and 45018 transitions. Word has length 425 [2021-11-23 02:46:32,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:32,246 INFO L470 AbstractCegarLoop]: Abstraction has 31117 states and 45018 transitions. [2021-11-23 02:46:32,246 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, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-23 02:46:32,246 INFO L276 IsEmpty]: Start isEmpty. Operand 31117 states and 45018 transitions. [2021-11-23 02:46:32,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-23 02:46:32,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:32,264 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 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] [2021-11-23 02:46:32,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:46:32,264 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:46:32,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:32,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1161040783, now seen corresponding path program 1 times [2021-11-23 02:46:32,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:32,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958411008] [2021-11-23 02:46:32,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:32,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:32,868 INFO L134 CoverageAnalysis]: Checked inductivity of 5374 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5374 trivial. 0 not checked. [2021-11-23 02:46:32,868 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:32,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958411008] [2021-11-23 02:46:32,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958411008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:32,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:32,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:46:32,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921984454] [2021-11-23 02:46:32,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:32,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:46:32,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:32,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:46:32,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:46:32,871 INFO L87 Difference]: Start difference. First operand 31117 states and 45018 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-23 02:46:36,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:41,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:43,741 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:45,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:45,928 INFO L93 Difference]: Finished difference Result 59367 states and 85919 transitions. [2021-11-23 02:46:45,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:46:45,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 432 [2021-11-23 02:46:45,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:46,449 INFO L225 Difference]: With dead ends: 59367 [2021-11-23 02:46:46,449 INFO L226 Difference]: Without dead ends: 59365 [2021-11-23 02:46:46,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:46:46,479 INFO L933 BasicCegarLoop]: 3568 mSDtfsCounter, 2844 mSDsluCounter, 11067 mSDsCounter, 0 mSdLazyCounter, 2113 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2861 SdHoareTripleChecker+Valid, 13098 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2113 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:46,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2861 Valid, 13098 Invalid, 2117 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2113 Invalid, 3 Unknown, 0 Unchecked, 11.6s Time] [2021-11-23 02:46:46,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59365 states. [2021-11-23 02:46:49,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59365 to 59359. [2021-11-23 02:46:49,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59359 states, 36684 states have (on average 1.3032929887689455) internal successors, (47810), 36906 states have internal predecessors, (47810), 18972 states have call successors, (18972), 3702 states have call predecessors, (18972), 3700 states have return successors, (19132), 18784 states have call predecessors, (19132), 18964 states have call successors, (19132) [2021-11-23 02:46:50,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59359 states to 59359 states and 85914 transitions. [2021-11-23 02:46:50,036 INFO L78 Accepts]: Start accepts. Automaton has 59359 states and 85914 transitions. Word has length 432 [2021-11-23 02:46:50,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:50,037 INFO L470 AbstractCegarLoop]: Abstraction has 59359 states and 85914 transitions. [2021-11-23 02:46:50,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-23 02:46:50,037 INFO L276 IsEmpty]: Start isEmpty. Operand 59359 states and 85914 transitions. [2021-11-23 02:46:50,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-11-23 02:46:50,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:50,054 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 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] [2021-11-23 02:46:50,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:46:50,054 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:46:50,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:50,055 INFO L85 PathProgramCache]: Analyzing trace with hash 4412813, now seen corresponding path program 1 times [2021-11-23 02:46:50,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:50,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786671787] [2021-11-23 02:46:50,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:50,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 5377 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5375 trivial. 0 not checked. [2021-11-23 02:46:50,835 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:50,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786671787] [2021-11-23 02:46:50,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786671787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:50,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:50,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:46:50,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866299550] [2021-11-23 02:46:50,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:50,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:46:50,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:50,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:46:50,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:46:50,838 INFO L87 Difference]: Start difference. First operand 59359 states and 85914 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-23 02:46:54,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:59,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:01,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:04,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:47:04,049 INFO L93 Difference]: Finished difference Result 87532 states and 126609 transitions. [2021-11-23 02:47:04,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:47:04,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 438 [2021-11-23 02:47:04,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:47:04,571 INFO L225 Difference]: With dead ends: 87532 [2021-11-23 02:47:04,571 INFO L226 Difference]: Without dead ends: 87530 [2021-11-23 02:47:04,618 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 [2021-11-23 02:47:04,619 INFO L933 BasicCegarLoop]: 3568 mSDtfsCounter, 2815 mSDsluCounter, 11042 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2831 SdHoareTripleChecker+Valid, 13077 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:47:04,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2831 Valid, 13077 Invalid, 2115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2110 Invalid, 3 Unknown, 0 Unchecked, 11.2s Time] [2021-11-23 02:47:04,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87530 states. [2021-11-23 02:47:08,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87530 to 87511. [2021-11-23 02:47:08,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87511 states, 54022 states have (on average 1.3028395838732367) internal successors, (70382), 54367 states have internal predecessors, (70382), 27952 states have call successors, (27952), 5537 states have call predecessors, (27952), 5534 states have return successors, (28255), 27656 states have call predecessors, (28255), 27940 states have call successors, (28255) [2021-11-23 02:47:09,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87511 states to 87511 states and 126589 transitions. [2021-11-23 02:47:09,407 INFO L78 Accepts]: Start accepts. Automaton has 87511 states and 126589 transitions. Word has length 438 [2021-11-23 02:47:09,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:47:09,409 INFO L470 AbstractCegarLoop]: Abstraction has 87511 states and 126589 transitions. [2021-11-23 02:47:09,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-23 02:47:09,409 INFO L276 IsEmpty]: Start isEmpty. Operand 87511 states and 126589 transitions. [2021-11-23 02:47:09,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2021-11-23 02:47:09,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:47:09,433 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 4, 4, 3, 2, 2, 2, 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] [2021-11-23 02:47:09,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:47:09,434 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:47:09,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:47:09,435 INFO L85 PathProgramCache]: Analyzing trace with hash 2021480452, now seen corresponding path program 1 times [2021-11-23 02:47:09,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:47:09,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547715552] [2021-11-23 02:47:09,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:47:09,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:47:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:47:10,065 INFO L134 CoverageAnalysis]: Checked inductivity of 5381 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5377 trivial. 0 not checked. [2021-11-23 02:47:10,066 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:47:10,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547715552] [2021-11-23 02:47:10,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547715552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:47:10,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:47:10,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:47:10,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139673920] [2021-11-23 02:47:10,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:47:10,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:47:10,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:47:10,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:47:10,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:47:10,069 INFO L87 Difference]: Start difference. First operand 87511 states and 126589 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-23 02:47:13,576 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:18,467 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:20,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:23,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:47:23,381 INFO L93 Difference]: Finished difference Result 87523 states and 126597 transitions. [2021-11-23 02:47:23,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:47:23,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 445 [2021-11-23 02:47:23,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:47:23,856 INFO L225 Difference]: With dead ends: 87523 [2021-11-23 02:47:23,856 INFO L226 Difference]: Without dead ends: 87521 [2021-11-23 02:47:23,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:47:23,903 INFO L933 BasicCegarLoop]: 3572 mSDtfsCounter, 2842 mSDsluCounter, 11073 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2857 SdHoareTripleChecker+Valid, 13104 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:47:23,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2857 Valid, 13104 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2120 Invalid, 3 Unknown, 0 Unchecked, 11.3s Time] [2021-11-23 02:47:24,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87521 states. [2021-11-23 02:47:27,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87521 to 87515. [2021-11-23 02:47:27,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87515 states, 54025 states have (on average 1.30282276723739) internal successors, (70385), 54370 states have internal predecessors, (70385), 27952 states have call successors, (27952), 5538 states have call predecessors, (27952), 5535 states have return successors, (28255), 27656 states have call predecessors, (28255), 27940 states have call successors, (28255) [2021-11-23 02:47:28,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87515 states to 87515 states and 126592 transitions. [2021-11-23 02:47:28,066 INFO L78 Accepts]: Start accepts. Automaton has 87515 states and 126592 transitions. Word has length 445 [2021-11-23 02:47:28,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:47:28,068 INFO L470 AbstractCegarLoop]: Abstraction has 87515 states and 126592 transitions. [2021-11-23 02:47:28,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-23 02:47:28,068 INFO L276 IsEmpty]: Start isEmpty. Operand 87515 states and 126592 transitions. [2021-11-23 02:47:28,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2021-11-23 02:47:28,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:47:28,089 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 4, 4, 4, 3, 3, 2, 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] [2021-11-23 02:47:28,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:47:28,090 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:47:28,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:47:28,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1391298391, now seen corresponding path program 1 times [2021-11-23 02:47:28,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:47:28,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988899634] [2021-11-23 02:47:28,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:47:28,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:47:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:47:28,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5391 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5385 trivial. 0 not checked. [2021-11-23 02:47:28,996 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:47:28,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988899634] [2021-11-23 02:47:28,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988899634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:47:28,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:47:28,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:47:28,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78762460] [2021-11-23 02:47:28,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:47:28,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:47:28,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:47:28,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:47:29,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:47:29,000 INFO L87 Difference]: Start difference. First operand 87515 states and 126592 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-23 02:47:32,432 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:37,401 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:39,482 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:42,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:47:42,593 INFO L93 Difference]: Finished difference Result 87527 states and 126600 transitions. [2021-11-23 02:47:42,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:47:42,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 450 [2021-11-23 02:47:42,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:47:43,079 INFO L225 Difference]: With dead ends: 87527 [2021-11-23 02:47:43,079 INFO L226 Difference]: Without dead ends: 87525 [2021-11-23 02:47:43,124 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 [2021-11-23 02:47:43,127 INFO L933 BasicCegarLoop]: 3572 mSDtfsCounter, 2842 mSDsluCounter, 11073 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2856 SdHoareTripleChecker+Valid, 13104 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:47:43,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2856 Valid, 13104 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2120 Invalid, 3 Unknown, 0 Unchecked, 11.3s Time] [2021-11-23 02:47:43,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87525 states. [2021-11-23 02:47:46,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87525 to 87519. [2021-11-23 02:47:46,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87519 states, 54028 states have (on average 1.30280595246909) internal successors, (70388), 54373 states have internal predecessors, (70388), 27952 states have call successors, (27952), 5539 states have call predecessors, (27952), 5536 states have return successors, (28255), 27656 states have call predecessors, (28255), 27940 states have call successors, (28255) [2021-11-23 02:47:47,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87519 states to 87519 states and 126595 transitions. [2021-11-23 02:47:47,051 INFO L78 Accepts]: Start accepts. Automaton has 87519 states and 126595 transitions. Word has length 450 [2021-11-23 02:47:47,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:47:47,053 INFO L470 AbstractCegarLoop]: Abstraction has 87519 states and 126595 transitions. [2021-11-23 02:47:47,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-23 02:47:47,053 INFO L276 IsEmpty]: Start isEmpty. Operand 87519 states and 126595 transitions. [2021-11-23 02:47:47,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2021-11-23 02:47:47,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:47:47,078 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 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] [2021-11-23 02:47:47,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:47:47,078 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:47:47,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:47:47,079 INFO L85 PathProgramCache]: Analyzing trace with hash 699865521, now seen corresponding path program 1 times [2021-11-23 02:47:47,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:47:47,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841919516] [2021-11-23 02:47:47,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:47:47,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:47:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:47:47,594 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5398 trivial. 0 not checked. [2021-11-23 02:47:47,594 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:47:47,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841919516] [2021-11-23 02:47:47,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841919516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:47:47,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:47:47,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:47:47,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366457059] [2021-11-23 02:47:47,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:47:47,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:47:47,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:47:47,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:47:47,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:47:47,597 INFO L87 Difference]: Start difference. First operand 87519 states and 126595 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-23 02:47:50,787 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:55,689 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:57,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:00,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:48:00,754 INFO L93 Difference]: Finished difference Result 87531 states and 126603 transitions. [2021-11-23 02:48:00,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:48:00,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 452 [2021-11-23 02:48:00,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:48:01,255 INFO L225 Difference]: With dead ends: 87531 [2021-11-23 02:48:01,255 INFO L226 Difference]: Without dead ends: 87529 [2021-11-23 02:48:01,312 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 [2021-11-23 02:48:01,312 INFO L933 BasicCegarLoop]: 3572 mSDtfsCounter, 2841 mSDsluCounter, 11073 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2854 SdHoareTripleChecker+Valid, 13104 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:48:01,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2854 Valid, 13104 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2120 Invalid, 3 Unknown, 0 Unchecked, 10.9s Time] [2021-11-23 02:48:01,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87529 states. [2021-11-23 02:48:04,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87529 to 87523. [2021-11-23 02:48:04,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87523 states, 54031 states have (on average 1.3027891395680258) internal successors, (70391), 54376 states have internal predecessors, (70391), 27952 states have call successors, (27952), 5540 states have call predecessors, (27952), 5537 states have return successors, (28255), 27656 states have call predecessors, (28255), 27940 states have call successors, (28255) [2021-11-23 02:48:05,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87523 states to 87523 states and 126598 transitions. [2021-11-23 02:48:05,339 INFO L78 Accepts]: Start accepts. Automaton has 87523 states and 126598 transitions. Word has length 452 [2021-11-23 02:48:05,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:48:05,341 INFO L470 AbstractCegarLoop]: Abstraction has 87523 states and 126598 transitions. [2021-11-23 02:48:05,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-23 02:48:05,342 INFO L276 IsEmpty]: Start isEmpty. Operand 87523 states and 126598 transitions. [2021-11-23 02:48:05,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2021-11-23 02:48:05,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:48:05,365 INFO L514 BasicCegarLoop]: trace histogram [38, 36, 36, 36, 36, 36, 36, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:48:05,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:48:05,366 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:48:05,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:48:05,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1426447475, now seen corresponding path program 1 times [2021-11-23 02:48:05,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:48:05,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302384421] [2021-11-23 02:48:05,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:48:05,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:48:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:48:05,744 INFO L134 CoverageAnalysis]: Checked inductivity of 5203 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5192 trivial. 0 not checked. [2021-11-23 02:48:05,745 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:48:05,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302384421] [2021-11-23 02:48:05,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302384421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:48:05,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:48:05,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:48:05,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336684114] [2021-11-23 02:48:05,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:48:05,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:48:05,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:48:05,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:48:05,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:48:05,748 INFO L87 Difference]: Start difference. First operand 87523 states and 126598 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-23 02:48:08,962 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:14,183 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:16,257 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:19,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:48:19,421 INFO L93 Difference]: Finished difference Result 214147 states and 309621 transitions. [2021-11-23 02:48:19,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:48:19,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 453 [2021-11-23 02:48:19,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:48:20,029 INFO L225 Difference]: With dead ends: 214147 [2021-11-23 02:48:20,030 INFO L226 Difference]: Without dead ends: 126697 [2021-11-23 02:48:20,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:48:20,692 INFO L933 BasicCegarLoop]: 3697 mSDtfsCounter, 2684 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2691 SdHoareTripleChecker+Valid, 6210 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:48:20,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2691 Valid, 6210 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1020 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2021-11-23 02:48:20,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126697 states. [2021-11-23 02:48:25,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126697 to 126571. [2021-11-23 02:48:26,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126571 states, 78188 states have (on average 1.3016063846114494) internal successors, (101770), 78699 states have internal predecessors, (101770), 40383 states have call successors, (40383), 8024 states have call predecessors, (40383), 7997 states have return successors, (40782), 39920 states have call predecessors, (40782), 40371 states have call successors, (40782) [2021-11-23 02:48:26,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126571 states to 126571 states and 182935 transitions. [2021-11-23 02:48:26,689 INFO L78 Accepts]: Start accepts. Automaton has 126571 states and 182935 transitions. Word has length 453 [2021-11-23 02:48:26,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:48:26,689 INFO L470 AbstractCegarLoop]: Abstraction has 126571 states and 182935 transitions. [2021-11-23 02:48:26,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-23 02:48:26,690 INFO L276 IsEmpty]: Start isEmpty. Operand 126571 states and 182935 transitions. [2021-11-23 02:48:26,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2021-11-23 02:48:26,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:48:26,709 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:48:26,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 02:48:26,710 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:48:26,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:48:26,711 INFO L85 PathProgramCache]: Analyzing trace with hash 509512909, now seen corresponding path program 1 times [2021-11-23 02:48:26,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:48:26,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483278793] [2021-11-23 02:48:26,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:48:26,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:48:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat