./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-ethernet-natsemi-natsemi.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04f516e-0cd7-489c-b30c-81404e1f0e70/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04f516e-0cd7-489c-b30c-81404e1f0e70/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04f516e-0cd7-489c-b30c-81404e1f0e70/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04f516e-0cd7-489c-b30c-81404e1f0e70/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04f516e-0cd7-489c-b30c-81404e1f0e70/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04f516e-0cd7-489c-b30c-81404e1f0e70/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6081258d9228cc20a54c5db1ec40347e5dbacbb2bb40755a07881673d13b875b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:32:43,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:32:43,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:32:43,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:32:43,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:32:43,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:32:43,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:32:43,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:32:43,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:32:43,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:32:43,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:32:43,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:32:43,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:32:43,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:32:43,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:32:43,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:32:44,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:32:44,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:32:44,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:32:44,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:32:44,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:32:44,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:32:44,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:32:44,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:32:44,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:32:44,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:32:44,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:32:44,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:32:44,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:32:44,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:32:44,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:32:44,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:32:44,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:32:44,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:32:44,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:32:44,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:32:44,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:32:44,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:32:44,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:32:44,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:32:44,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:32:44,044 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04f516e-0cd7-489c-b30c-81404e1f0e70/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:32:44,077 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:32:44,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:32:44,078 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:32:44,078 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:32:44,079 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:32:44,079 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:32:44,079 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:32:44,080 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:32:44,080 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:32:44,080 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:32:44,080 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:32:44,080 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:32:44,080 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:32:44,081 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:32:44,081 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:32:44,081 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:32:44,081 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:32:44,081 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:32:44,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:32:44,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:32:44,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:32:44,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:32:44,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:32:44,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:32:44,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:32:44,083 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:32:44,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:32:44,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:32:44,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:32:44,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:32:44,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:32:44,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:32:44,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:32:44,085 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:32:44,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:32:44,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:32:44,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:32:44,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:32:44,086 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_f04f516e-0cd7-489c-b30c-81404e1f0e70/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04f516e-0cd7-489c-b30c-81404e1f0e70/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6081258d9228cc20a54c5db1ec40347e5dbacbb2bb40755a07881673d13b875b [2021-11-20 23:32:44,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:32:44,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:32:44,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:32:44,354 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:32:44,355 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:32:44,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04f516e-0cd7-489c-b30c-81404e1f0e70/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-20 23:32:44,445 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04f516e-0cd7-489c-b30c-81404e1f0e70/bin/utaipan-TEXQjIfE4P/data/af13e1eb7/e5b3cc97b0a34d8089c1d9c47045ef21/FLAG9423dfa7b [2021-11-20 23:32:45,551 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:32:45,552 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04f516e-0cd7-489c-b30c-81404e1f0e70/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-20 23:32:45,639 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04f516e-0cd7-489c-b30c-81404e1f0e70/bin/utaipan-TEXQjIfE4P/data/af13e1eb7/e5b3cc97b0a34d8089c1d9c47045ef21/FLAG9423dfa7b [2021-11-20 23:32:45,852 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04f516e-0cd7-489c-b30c-81404e1f0e70/bin/utaipan-TEXQjIfE4P/data/af13e1eb7/e5b3cc97b0a34d8089c1d9c47045ef21 [2021-11-20 23:32:45,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:32:45,857 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:32:45,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:32:45,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:32:45,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:32:45,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:32:45" (1/1) ... [2021-11-20 23:32:45,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7094ec47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:45, skipping insertion in model container [2021-11-20 23:32:45,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:32:45" (1/1) ... [2021-11-20 23:32:45,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:32:46,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:32:49,787 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_f04f516e-0cd7-489c-b30c-81404e1f0e70/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386207,386220] [2021-11-20 23:32:49,795 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_f04f516e-0cd7-489c-b30c-81404e1f0e70/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386376,386389] [2021-11-20 23:32:49,796 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_f04f516e-0cd7-489c-b30c-81404e1f0e70/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386543,386556] [2021-11-20 23:32:49,796 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_f04f516e-0cd7-489c-b30c-81404e1f0e70/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386711,386724] [2021-11-20 23:32:49,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:32:49,893 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:32:50,399 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_f04f516e-0cd7-489c-b30c-81404e1f0e70/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386207,386220] [2021-11-20 23:32:50,400 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_f04f516e-0cd7-489c-b30c-81404e1f0e70/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386376,386389] [2021-11-20 23:32:50,400 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_f04f516e-0cd7-489c-b30c-81404e1f0e70/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386543,386556] [2021-11-20 23:32:50,401 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_f04f516e-0cd7-489c-b30c-81404e1f0e70/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386711,386724] [2021-11-20 23:32:50,411 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:32:50,693 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:32:50,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:50 WrapperNode [2021-11-20 23:32:50,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:32:50,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:32:50,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:32:50,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:32:50,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:50" (1/1) ... [2021-11-20 23:32:50,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:50" (1/1) ... [2021-11-20 23:32:51,084 INFO L137 Inliner]: procedures = 512, calls = 2538, calls flagged for inlining = 248, calls inlined = 216, statements flattened = 5394 [2021-11-20 23:32:51,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:32:51,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:32:51,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:32:51,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:32:51,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:50" (1/1) ... [2021-11-20 23:32:51,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:50" (1/1) ... [2021-11-20 23:32:51,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:50" (1/1) ... [2021-11-20 23:32:51,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:50" (1/1) ... [2021-11-20 23:32:51,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:50" (1/1) ... [2021-11-20 23:32:51,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:50" (1/1) ... [2021-11-20 23:32:51,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:50" (1/1) ... [2021-11-20 23:32:51,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:32:51,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:32:51,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:32:51,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:32:51,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:50" (1/1) ... [2021-11-20 23:32:51,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:32:51,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04f516e-0cd7-489c-b30c-81404e1f0e70/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:32:51,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04f516e-0cd7-489c-b30c-81404e1f0e70/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:32:51,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04f516e-0cd7-489c-b30c-81404e1f0e70/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:32:51,589 INFO L130 BoogieDeclarations]: Found specification of procedure drain_rx [2021-11-20 23:32:51,589 INFO L138 BoogieDeclarations]: Found implementation of procedure drain_rx [2021-11-20 23:32:51,589 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-20 23:32:51,589 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-20 23:32:51,590 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-20 23:32:51,590 INFO L130 BoogieDeclarations]: Found specification of procedure miiport_write [2021-11-20 23:32:51,590 INFO L138 BoogieDeclarations]: Found implementation of procedure miiport_write [2021-11-20 23:32:51,590 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-20 23:32:51,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-20 23:32:51,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 23:32:51,591 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 23:32:51,591 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-20 23:32:51,591 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-20 23:32:51,591 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_tx_done [2021-11-20 23:32:51,591 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_tx_done [2021-11-20 23:32:51,592 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-20 23:32:51,592 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-20 23:32:51,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:32:51,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:32:51,592 INFO L130 BoogieDeclarations]: Found specification of procedure reinit_rx [2021-11-20 23:32:51,593 INFO L138 BoogieDeclarations]: Found implementation of procedure reinit_rx [2021-11-20 23:32:51,593 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-20 23:32:51,593 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-20 23:32:51,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-20 23:32:51,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-20 23:32:51,594 INFO L130 BoogieDeclarations]: Found specification of procedure reinit_ring [2021-11-20 23:32:51,594 INFO L138 BoogieDeclarations]: Found implementation of procedure reinit_ring [2021-11-20 23:32:51,594 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-20 23:32:51,594 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-20 23:32:51,595 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-20 23:32:51,595 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-20 23:32:51,595 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-20 23:32:51,595 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-20 23:32:51,596 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-20 23:32:51,596 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-20 23:32:51,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2021-11-20 23:32:51,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2021-11-20 23:32:51,596 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-20 23:32:51,597 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-20 23:32:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-20 23:32:51,597 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-20 23:32:51,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-20 23:32:51,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-20 23:32:51,598 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-20 23:32:51,599 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-20 23:32:51,599 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-20 23:32:51,600 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-20 23:32:51,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 23:32:51,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 23:32:51,600 INFO L130 BoogieDeclarations]: Found specification of procedure __set_rx_mode [2021-11-20 23:32:51,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_rx_mode [2021-11-20 23:32:51,601 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-20 23:32:51,601 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-20 23:32:51,601 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-20 23:32:51,602 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-20 23:32:51,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:32:51,602 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-20 23:32:51,603 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-20 23:32:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2021-11-20 23:32:51,603 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2021-11-20 23:32:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-20 23:32:51,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-20 23:32:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_read [2021-11-20 23:32:51,604 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_read [2021-11-20 23:32:51,604 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-20 23:32:51,604 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-20 23:32:51,605 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_stop_rxtx [2021-11-20 23:32:51,605 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_stop_rxtx [2021-11-20 23:32:51,605 INFO L130 BoogieDeclarations]: Found specification of procedure ns_tx_timeout [2021-11-20 23:32:51,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_tx_timeout [2021-11-20 23:32:51,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:32:51,606 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-20 23:32:51,606 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-20 23:32:51,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-20 23:32:51,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-20 23:32:51,607 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_reset [2021-11-20 23:32:51,607 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_reset [2021-11-20 23:32:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:32:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-20 23:32:51,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-20 23:32:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:32:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-20 23:32:51,608 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-20 23:32:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-20 23:32:51,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-20 23:32:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure move_int_phy [2021-11-20 23:32:51,610 INFO L138 BoogieDeclarations]: Found implementation of procedure move_int_phy [2021-11-20 23:32:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:32:51,611 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:32:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-20 23:32:51,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-20 23:32:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-20 23:32:51,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-20 23:32:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-20 23:32:51,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-20 23:32:51,613 INFO L130 BoogieDeclarations]: Found specification of procedure enable_wol_mode [2021-11-20 23:32:51,613 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_wol_mode [2021-11-20 23:32:51,613 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_resume [2021-11-20 23:32:51,613 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_resume [2021-11-20 23:32:51,613 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-20 23:32:51,614 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-20 23:32:51,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-20 23:32:51,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-20 23:32:51,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:32:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-20 23:32:51,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-20 23:32:51,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-20 23:32:51,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-20 23:32:51,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-20 23:32:51,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-20 23:32:51,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:32:51,622 INFO L130 BoogieDeclarations]: Found specification of procedure mii_getbit [2021-11-20 23:32:51,622 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_getbit [2021-11-20 23:32:51,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-20 23:32:51,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-20 23:32:51,628 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-20 23:32:51,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-20 23:32:51,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:32:51,629 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:32:51,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:32:51,629 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-20 23:32:51,629 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-20 23:32:51,629 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_poll_controller [2021-11-20 23:32:51,630 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_poll_controller [2021-11-20 23:32:51,630 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-20 23:32:51,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-20 23:32:51,630 INFO L130 BoogieDeclarations]: Found specification of procedure check_link [2021-11-20 23:32:51,630 INFO L138 BoogieDeclarations]: Found implementation of procedure check_link [2021-11-20 23:32:51,630 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-20 23:32:51,631 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-20 23:32:51,631 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 23:32:51,631 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 23:32:51,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-20 23:32:51,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-20 23:32:51,631 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-20 23:32:51,631 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-20 23:32:51,632 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-20 23:32:51,632 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-20 23:32:51,632 INFO L130 BoogieDeclarations]: Found specification of procedure init_phy_fixup [2021-11-20 23:32:51,632 INFO L138 BoogieDeclarations]: Found implementation of procedure init_phy_fixup [2021-11-20 23:32:51,632 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-11-20 23:32:51,632 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-11-20 23:32:51,633 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-20 23:32:51,633 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-20 23:32:51,633 INFO L130 BoogieDeclarations]: Found specification of procedure mii_nway_result [2021-11-20 23:32:51,633 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_nway_result [2021-11-20 23:32:51,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:32:51,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:32:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:32:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:32:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 23:32:51,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 23:32:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure switch_port_external [2021-11-20 23:32:51,634 INFO L138 BoogieDeclarations]: Found implementation of procedure switch_port_external [2021-11-20 23:32:51,635 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_close [2021-11-20 23:32:51,635 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_close [2021-11-20 23:32:51,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-20 23:32:51,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-20 23:32:51,635 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-20 23:32:51,635 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-20 23:32:51,635 INFO L130 BoogieDeclarations]: Found specification of procedure get_eeprom_len [2021-11-20 23:32:51,636 INFO L138 BoogieDeclarations]: Found implementation of procedure get_eeprom_len [2021-11-20 23:32:51,636 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-11-20 23:32:51,636 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-11-20 23:32:51,636 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2021-11-20 23:32:51,636 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2021-11-20 23:32:51,636 INFO L130 BoogieDeclarations]: Found specification of procedure get_regs_len [2021-11-20 23:32:51,637 INFO L138 BoogieDeclarations]: Found implementation of procedure get_regs_len [2021-11-20 23:32:51,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-20 23:32:51,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-20 23:32:51,637 INFO L130 BoogieDeclarations]: Found specification of procedure nway_reset [2021-11-20 23:32:51,637 INFO L138 BoogieDeclarations]: Found implementation of procedure nway_reset [2021-11-20 23:32:51,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_netdev_private [2021-11-20 23:32:51,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_netdev_private [2021-11-20 23:32:51,638 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-20 23:32:51,638 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-20 23:32:51,638 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-20 23:32:51,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-20 23:32:51,638 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2021-11-20 23:32:51,640 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2021-11-20 23:32:51,640 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-20 23:32:51,640 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-20 23:32:51,640 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-20 23:32:51,641 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-20 23:32:51,641 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies [2021-11-20 23:32:51,641 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies [2021-11-20 23:32:51,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:32:51,641 INFO L130 BoogieDeclarations]: Found specification of procedure switch_port_internal [2021-11-20 23:32:51,641 INFO L138 BoogieDeclarations]: Found implementation of procedure switch_port_internal [2021-11-20 23:32:51,642 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-20 23:32:51,642 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-20 23:32:51,642 INFO L130 BoogieDeclarations]: Found specification of procedure dump_ring [2021-11-20 23:32:51,642 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_ring [2021-11-20 23:32:51,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:32:51,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:32:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure intr_handler [2021-11-20 23:32:51,643 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_handler [2021-11-20 23:32:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-20 23:32:51,643 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-20 23:32:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_netdev_private [2021-11-20 23:32:51,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_netdev_private [2021-11-20 23:32:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_68 [2021-11-20 23:32:51,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_68 [2021-11-20 23:32:51,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-20 23:32:51,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-20 23:32:51,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-20 23:32:51,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-20 23:32:51,644 INFO L130 BoogieDeclarations]: Found specification of procedure __get_stats [2021-11-20 23:32:51,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __get_stats [2021-11-20 23:32:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure set_bufsize [2021-11-20 23:32:51,645 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bufsize [2021-11-20 23:32:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-20 23:32:51,645 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-20 23:32:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_open [2021-11-20 23:32:51,646 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_open [2021-11-20 23:32:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_84 [2021-11-20 23:32:51,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_84 [2021-11-20 23:32:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure drain_ring [2021-11-20 23:32:51,646 INFO L138 BoogieDeclarations]: Found implementation of procedure drain_ring [2021-11-20 23:32:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-20 23:32:51,646 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-20 23:32:51,647 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-20 23:32:51,647 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-20 23:32:51,647 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-20 23:32:51,647 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-20 23:32:51,647 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-20 23:32:51,647 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-20 23:32:51,648 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_remove1 [2021-11-20 23:32:51,648 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_remove1 [2021-11-20 23:32:51,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_natsemi_exit_mod_15_2 [2021-11-20 23:32:51,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_natsemi_exit_mod_15_2 [2021-11-20 23:32:51,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:32:51,649 INFO L130 BoogieDeclarations]: Found specification of procedure init_ring [2021-11-20 23:32:51,653 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ring [2021-11-20 23:32:51,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:32:51,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:32:51,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_85 [2021-11-20 23:32:51,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_85 [2021-11-20 23:32:51,654 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_irq_disable [2021-11-20 23:32:51,654 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_irq_disable [2021-11-20 23:32:51,654 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2021-11-20 23:32:51,654 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2021-11-20 23:32:51,656 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-20 23:32:51,656 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-20 23:32:51,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_69 [2021-11-20 23:32:51,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_69 [2021-11-20 23:32:51,656 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-20 23:32:51,657 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-20 23:32:51,657 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-11-20 23:32:51,657 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-11-20 23:32:51,657 INFO L130 BoogieDeclarations]: Found specification of procedure ns_ioaddr [2021-11-20 23:32:51,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_ioaddr [2021-11-20 23:32:51,657 INFO L130 BoogieDeclarations]: Found specification of procedure mii_send_bits [2021-11-20 23:32:51,657 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_send_bits [2021-11-20 23:32:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure refill_rx [2021-11-20 23:32:51,658 INFO L138 BoogieDeclarations]: Found implementation of procedure refill_rx [2021-11-20 23:32:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-20 23:32:51,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-20 23:32:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed [2021-11-20 23:32:51,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed [2021-11-20 23:32:51,659 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-11-20 23:32:51,659 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-11-20 23:32:51,659 INFO L130 BoogieDeclarations]: Found specification of procedure drain_tx [2021-11-20 23:32:51,659 INFO L138 BoogieDeclarations]: Found implementation of procedure drain_tx [2021-11-20 23:32:51,659 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_irq_enable [2021-11-20 23:32:51,659 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_irq_enable [2021-11-20 23:32:51,659 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-20 23:32:51,660 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-20 23:32:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:32:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure miiport_read [2021-11-20 23:32:51,660 INFO L138 BoogieDeclarations]: Found implementation of procedure miiport_read [2021-11-20 23:32:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-20 23:32:51,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-20 23:32:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-20 23:32:51,661 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-20 23:32:52,655 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:32:52,660 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:32:53,208 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 23:32:56,767 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-20 23:32:56,875 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:32:58,612 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:32:58,612 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:32:58,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:32:58 BoogieIcfgContainer [2021-11-20 23:32:58,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:32:58,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:32:58,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:32:58,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:32:58,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:32:45" (1/3) ... [2021-11-20 23:32:58,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac3cac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:32:58, skipping insertion in model container [2021-11-20 23:32:58,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:50" (2/3) ... [2021-11-20 23:32:58,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac3cac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:32:58, skipping insertion in model container [2021-11-20 23:32:58,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:32:58" (3/3) ... [2021-11-20 23:32:58,626 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-20 23:32:58,632 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:32:58,632 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-20 23:32:58,713 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:32:58,729 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 [2021-11-20 23:32:58,729 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-20 23:32:58,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 1935 states, 1055 states have (on average 1.2654028436018958) internal successors, (1335), 1092 states have internal predecessors, (1335), 749 states have call successors, (749), 129 states have call predecessors, (749), 128 states have return successors, (743), 734 states have call predecessors, (743), 743 states have call successors, (743) [2021-11-20 23:32:58,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-20 23:32:58,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:32:58,842 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:32:58,842 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)] === [2021-11-20 23:32:58,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:32:58,847 INFO L85 PathProgramCache]: Analyzing trace with hash 2018338776, now seen corresponding path program 1 times [2021-11-20 23:32:58,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:32:58,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661012086] [2021-11-20 23:32:58,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:58,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:32:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:59,678 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2021-11-20 23:32:59,679 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:32:59,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661012086] [2021-11-20 23:32:59,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661012086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:32:59,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:32:59,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:32:59,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368171696] [2021-11-20 23:32:59,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:32:59,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:32:59,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:32:59,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:32:59,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:32:59,720 INFO L87 Difference]: Start difference. First operand has 1935 states, 1055 states have (on average 1.2654028436018958) internal successors, (1335), 1092 states have internal predecessors, (1335), 749 states have call successors, (749), 129 states have call predecessors, (749), 128 states have return successors, (743), 734 states have call predecessors, (743), 743 states have call successors, (743) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 23:33:03,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:03,253 INFO L93 Difference]: Finished difference Result 5669 states and 8427 transitions. [2021-11-20 23:33:03,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:33:03,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 171 [2021-11-20 23:33:03,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:03,324 INFO L225 Difference]: With dead ends: 5669 [2021-11-20 23:33:03,324 INFO L226 Difference]: Without dead ends: 3755 [2021-11-20 23:33:03,349 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 [2021-11-20 23:33:03,354 INFO L933 BasicCegarLoop]: 3200 mSDtfsCounter, 2692 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2692 SdHoareTripleChecker+Valid, 5664 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:03,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2692 Valid, 5664 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-20 23:33:03,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3755 states. [2021-11-20 23:33:03,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3755 to 3751. [2021-11-20 23:33:03,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3751 states, 2057 states have (on average 1.261059795819154) internal successors, (2594), 2130 states have internal predecessors, (2594), 1439 states have call successors, (1439), 253 states have call predecessors, (1439), 252 states have return successors, (1435), 1417 states have call predecessors, (1435), 1435 states have call successors, (1435) [2021-11-20 23:33:03,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5468 transitions. [2021-11-20 23:33:03,861 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5468 transitions. Word has length 171 [2021-11-20 23:33:03,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:03,865 INFO L470 AbstractCegarLoop]: Abstraction has 3751 states and 5468 transitions. [2021-11-20 23:33:03,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 23:33:03,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5468 transitions. [2021-11-20 23:33:03,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-20 23:33:03,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:03,883 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:33:03,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:33:03,883 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)] === [2021-11-20 23:33:03,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:03,885 INFO L85 PathProgramCache]: Analyzing trace with hash 54522437, now seen corresponding path program 1 times [2021-11-20 23:33:03,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:03,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500021438] [2021-11-20 23:33:03,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:03,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:04,242 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2021-11-20 23:33:04,243 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:04,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500021438] [2021-11-20 23:33:04,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500021438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:04,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:04,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:33:04,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651012664] [2021-11-20 23:33:04,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:04,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:33:04,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:04,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:33:04,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:04,251 INFO L87 Difference]: Start difference. First operand 3751 states and 5468 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 23:33:07,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:07,243 INFO L93 Difference]: Finished difference Result 10407 states and 15096 transitions. [2021-11-20 23:33:07,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:33:07,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 179 [2021-11-20 23:33:07,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:07,317 INFO L225 Difference]: With dead ends: 10407 [2021-11-20 23:33:07,317 INFO L226 Difference]: Without dead ends: 6687 [2021-11-20 23:33:07,345 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 [2021-11-20 23:33:07,347 INFO L933 BasicCegarLoop]: 3068 mSDtfsCounter, 2149 mSDsluCounter, 2706 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2149 SdHoareTripleChecker+Valid, 5495 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:07,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2149 Valid, 5495 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 23:33:07,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6687 states. [2021-11-20 23:33:07,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6687 to 6658. [2021-11-20 23:33:07,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6658 states, 3614 states have (on average 1.2476480354178197) internal successors, (4509), 3750 states have internal predecessors, (4509), 2560 states have call successors, (2560), 486 states have call predecessors, (2560), 481 states have return successors, (2558), 2509 states have call predecessors, (2558), 2556 states have call successors, (2558) [2021-11-20 23:33:07,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6658 states to 6658 states and 9627 transitions. [2021-11-20 23:33:07,937 INFO L78 Accepts]: Start accepts. Automaton has 6658 states and 9627 transitions. Word has length 179 [2021-11-20 23:33:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:07,938 INFO L470 AbstractCegarLoop]: Abstraction has 6658 states and 9627 transitions. [2021-11-20 23:33:07,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 23:33:07,939 INFO L276 IsEmpty]: Start isEmpty. Operand 6658 states and 9627 transitions. [2021-11-20 23:33:07,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-20 23:33:07,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:07,943 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:33:07,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:33:07,944 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)] === [2021-11-20 23:33:07,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:07,945 INFO L85 PathProgramCache]: Analyzing trace with hash -770422812, now seen corresponding path program 1 times [2021-11-20 23:33:07,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:07,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263517278] [2021-11-20 23:33:07,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:07,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:08,193 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2021-11-20 23:33:08,194 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:08,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263517278] [2021-11-20 23:33:08,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263517278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:08,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:08,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:33:08,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441268183] [2021-11-20 23:33:08,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:08,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:33:08,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:08,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:33:08,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:08,198 INFO L87 Difference]: Start difference. First operand 6658 states and 9627 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 23:33:12,239 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:13,670 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:13,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:13,860 INFO L93 Difference]: Finished difference Result 12773 states and 18402 transitions. [2021-11-20 23:33:13,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:33:13,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 181 [2021-11-20 23:33:13,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:13,920 INFO L225 Difference]: With dead ends: 12773 [2021-11-20 23:33:13,920 INFO L226 Difference]: Without dead ends: 6146 [2021-11-20 23:33:13,962 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 [2021-11-20 23:33:13,967 INFO L933 BasicCegarLoop]: 3663 mSDtfsCounter, 1954 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 6105 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:13,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1954 Valid, 6105 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-20 23:33:13,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6146 states. [2021-11-20 23:33:14,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6146 to 6119. [2021-11-20 23:33:14,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6119 states, 3370 states have (on average 1.2456973293768545) internal successors, (4198), 3488 states have internal predecessors, (4198), 2273 states have call successors, (2273), 478 states have call predecessors, (2273), 473 states have return successors, (2270), 2224 states have call predecessors, (2270), 2269 states have call successors, (2270) [2021-11-20 23:33:14,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6119 states to 6119 states and 8741 transitions. [2021-11-20 23:33:14,505 INFO L78 Accepts]: Start accepts. Automaton has 6119 states and 8741 transitions. Word has length 181 [2021-11-20 23:33:14,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:14,507 INFO L470 AbstractCegarLoop]: Abstraction has 6119 states and 8741 transitions. [2021-11-20 23:33:14,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 23:33:14,508 INFO L276 IsEmpty]: Start isEmpty. Operand 6119 states and 8741 transitions. [2021-11-20 23:33:14,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-20 23:33:14,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:14,513 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 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] [2021-11-20 23:33:14,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:33:14,513 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)] === [2021-11-20 23:33:14,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:14,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1213775498, now seen corresponding path program 1 times [2021-11-20 23:33:14,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:14,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927953934] [2021-11-20 23:33:14,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:14,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2021-11-20 23:33:14,743 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:14,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927953934] [2021-11-20 23:33:14,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927953934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:14,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:14,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:33:14,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357084884] [2021-11-20 23:33:14,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:14,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:33:14,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:14,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:33:14,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:14,748 INFO L87 Difference]: Start difference. First operand 6119 states and 8741 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-20 23:33:19,131 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:19,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:19,234 INFO L93 Difference]: Finished difference Result 16253 states and 23216 transitions. [2021-11-20 23:33:19,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:33:19,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 187 [2021-11-20 23:33:19,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:19,333 INFO L225 Difference]: With dead ends: 16253 [2021-11-20 23:33:19,333 INFO L226 Difference]: Without dead ends: 10165 [2021-11-20 23:33:19,373 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 [2021-11-20 23:33:19,374 INFO L933 BasicCegarLoop]: 3129 mSDtfsCounter, 2657 mSDsluCounter, 2636 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2657 SdHoareTripleChecker+Valid, 5458 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:19,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2657 Valid, 5458 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-11-20 23:33:19,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10165 states. [2021-11-20 23:33:20,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10165 to 10136. [2021-11-20 23:33:20,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10136 states, 5654 states have (on average 1.25221082419526) internal successors, (7080), 5847 states have internal predecessors, (7080), 3697 states have call successors, (3697), 797 states have call predecessors, (3697), 782 states have return successors, (3702), 3604 states have call predecessors, (3702), 3693 states have call successors, (3702) [2021-11-20 23:33:20,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10136 states to 10136 states and 14479 transitions. [2021-11-20 23:33:20,109 INFO L78 Accepts]: Start accepts. Automaton has 10136 states and 14479 transitions. Word has length 187 [2021-11-20 23:33:20,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:20,110 INFO L470 AbstractCegarLoop]: Abstraction has 10136 states and 14479 transitions. [2021-11-20 23:33:20,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-20 23:33:20,110 INFO L276 IsEmpty]: Start isEmpty. Operand 10136 states and 14479 transitions. [2021-11-20 23:33:20,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-20 23:33:20,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:20,115 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:33:20,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:33:20,116 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)] === [2021-11-20 23:33:20,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:20,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1769465417, now seen corresponding path program 1 times [2021-11-20 23:33:20,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:20,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120428380] [2021-11-20 23:33:20,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:20,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2021-11-20 23:33:20,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:20,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120428380] [2021-11-20 23:33:20,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120428380] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:20,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:20,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:33:20,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571120700] [2021-11-20 23:33:20,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:20,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:33:20,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:20,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:33:20,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:20,301 INFO L87 Difference]: Start difference. First operand 10136 states and 14479 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-20 23:33:24,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:24,430 INFO L93 Difference]: Finished difference Result 29783 states and 42561 transitions. [2021-11-20 23:33:24,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:33:24,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 195 [2021-11-20 23:33:24,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:24,584 INFO L225 Difference]: With dead ends: 29783 [2021-11-20 23:33:24,585 INFO L226 Difference]: Without dead ends: 19678 [2021-11-20 23:33:24,647 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 [2021-11-20 23:33:24,648 INFO L933 BasicCegarLoop]: 3220 mSDtfsCounter, 2687 mSDsluCounter, 2779 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2687 SdHoareTripleChecker+Valid, 5685 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:24,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2687 Valid, 5685 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-20 23:33:24,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19678 states. [2021-11-20 23:33:25,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19678 to 19637. [2021-11-20 23:33:26,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19637 states, 10933 states have (on average 1.2488795390103358) internal successors, (13654), 11333 states have internal predecessors, (13654), 7183 states have call successors, (7183), 1547 states have call predecessors, (7183), 1518 states have return successors, (7197), 6982 states have call predecessors, (7197), 7179 states have call successors, (7197) [2021-11-20 23:33:26,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19637 states to 19637 states and 28034 transitions. [2021-11-20 23:33:26,318 INFO L78 Accepts]: Start accepts. Automaton has 19637 states and 28034 transitions. Word has length 195 [2021-11-20 23:33:26,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:26,319 INFO L470 AbstractCegarLoop]: Abstraction has 19637 states and 28034 transitions. [2021-11-20 23:33:26,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-20 23:33:26,320 INFO L276 IsEmpty]: Start isEmpty. Operand 19637 states and 28034 transitions. [2021-11-20 23:33:26,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-20 23:33:26,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:26,325 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:33:26,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:33:26,326 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)] === [2021-11-20 23:33:26,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:26,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1751786339, now seen corresponding path program 1 times [2021-11-20 23:33:26,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:26,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901119306] [2021-11-20 23:33:26,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:26,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:26,644 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 999 trivial. 0 not checked. [2021-11-20 23:33:26,644 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:26,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901119306] [2021-11-20 23:33:26,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901119306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:26,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:26,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:33:26,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513770337] [2021-11-20 23:33:26,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:26,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:33:26,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:26,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:33:26,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:33:26,647 INFO L87 Difference]: Start difference. First operand 19637 states and 28034 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-20 23:33:30,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:30,814 INFO L93 Difference]: Finished difference Result 19643 states and 28039 transitions. [2021-11-20 23:33:30,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:33:30,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 213 [2021-11-20 23:33:30,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:30,952 INFO L225 Difference]: With dead ends: 19643 [2021-11-20 23:33:30,952 INFO L226 Difference]: Without dead ends: 19641 [2021-11-20 23:33:30,965 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 [2021-11-20 23:33:30,967 INFO L933 BasicCegarLoop]: 2477 mSDtfsCounter, 2743 mSDsluCounter, 5585 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2754 SdHoareTripleChecker+Valid, 7418 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:30,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2754 Valid, 7418 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-20 23:33:31,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19641 states. [2021-11-20 23:33:32,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19641 to 19641. [2021-11-20 23:33:32,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19641 states, 10936 states have (on average 1.248811265544989) internal successors, (13657), 11336 states have internal predecessors, (13657), 7183 states have call successors, (7183), 1548 states have call predecessors, (7183), 1519 states have return successors, (7197), 6982 states have call predecessors, (7197), 7179 states have call successors, (7197) [2021-11-20 23:33:32,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19641 states to 19641 states and 28037 transitions. [2021-11-20 23:33:32,416 INFO L78 Accepts]: Start accepts. Automaton has 19641 states and 28037 transitions. Word has length 213 [2021-11-20 23:33:32,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:32,417 INFO L470 AbstractCegarLoop]: Abstraction has 19641 states and 28037 transitions. [2021-11-20 23:33:32,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-20 23:33:32,417 INFO L276 IsEmpty]: Start isEmpty. Operand 19641 states and 28037 transitions. [2021-11-20 23:33:32,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-20 23:33:32,423 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:32,423 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 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] [2021-11-20 23:33:32,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:33:32,424 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)] === [2021-11-20 23:33:32,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:32,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1073752993, now seen corresponding path program 1 times [2021-11-20 23:33:32,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:32,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623229232] [2021-11-20 23:33:32,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:32,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2021-11-20 23:33:32,682 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:32,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623229232] [2021-11-20 23:33:32,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623229232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:32,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:32,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:33:32,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561222637] [2021-11-20 23:33:32,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:32,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:33:32,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:32,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:33:32,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:33:32,685 INFO L87 Difference]: Start difference. First operand 19641 states and 28037 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-20 23:33:37,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:37,271 INFO L93 Difference]: Finished difference Result 19647 states and 28042 transitions. [2021-11-20 23:33:37,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:33:37,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 221 [2021-11-20 23:33:37,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:37,394 INFO L225 Difference]: With dead ends: 19647 [2021-11-20 23:33:37,394 INFO L226 Difference]: Without dead ends: 19645 [2021-11-20 23:33:37,405 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 [2021-11-20 23:33:37,406 INFO L933 BasicCegarLoop]: 2480 mSDtfsCounter, 2737 mSDsluCounter, 5585 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2747 SdHoareTripleChecker+Valid, 7421 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:37,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2747 Valid, 7421 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-20 23:33:37,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2021-11-20 23:33:38,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 19645. [2021-11-20 23:33:38,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19645 states, 10939 states have (on average 1.2487430295273791) internal successors, (13660), 11339 states have internal predecessors, (13660), 7183 states have call successors, (7183), 1549 states have call predecessors, (7183), 1520 states have return successors, (7197), 6982 states have call predecessors, (7197), 7179 states have call successors, (7197) [2021-11-20 23:33:38,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19645 states to 19645 states and 28040 transitions. [2021-11-20 23:33:38,900 INFO L78 Accepts]: Start accepts. Automaton has 19645 states and 28040 transitions. Word has length 221 [2021-11-20 23:33:38,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:38,901 INFO L470 AbstractCegarLoop]: Abstraction has 19645 states and 28040 transitions. [2021-11-20 23:33:38,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-20 23:33:38,901 INFO L276 IsEmpty]: Start isEmpty. Operand 19645 states and 28040 transitions. [2021-11-20 23:33:38,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-20 23:33:38,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:38,908 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:33:38,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:33:38,909 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)] === [2021-11-20 23:33:38,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:38,910 INFO L85 PathProgramCache]: Analyzing trace with hash 14923811, now seen corresponding path program 1 times [2021-11-20 23:33:38,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:38,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854355436] [2021-11-20 23:33:38,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:38,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:39,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1003 trivial. 0 not checked. [2021-11-20 23:33:39,157 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:39,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854355436] [2021-11-20 23:33:39,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854355436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:39,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:39,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:33:39,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769701487] [2021-11-20 23:33:39,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:39,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:33:39,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:39,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:33:39,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:33:39,161 INFO L87 Difference]: Start difference. First operand 19645 states and 28040 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-20 23:33:42,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:42,619 INFO L93 Difference]: Finished difference Result 19651 states and 28045 transitions. [2021-11-20 23:33:42,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:33:42,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 223 [2021-11-20 23:33:42,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:42,724 INFO L225 Difference]: With dead ends: 19651 [2021-11-20 23:33:42,725 INFO L226 Difference]: Without dead ends: 19649 [2021-11-20 23:33:42,734 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 [2021-11-20 23:33:42,735 INFO L933 BasicCegarLoop]: 2480 mSDtfsCounter, 2738 mSDsluCounter, 5585 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2747 SdHoareTripleChecker+Valid, 7421 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:42,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2747 Valid, 7421 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-20 23:33:42,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19649 states. [2021-11-20 23:33:43,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19649 to 19649. [2021-11-20 23:33:43,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19649 states, 10942 states have (on average 1.2486748309267044) internal successors, (13663), 11342 states have internal predecessors, (13663), 7183 states have call successors, (7183), 1550 states have call predecessors, (7183), 1521 states have return successors, (7197), 6982 states have call predecessors, (7197), 7179 states have call successors, (7197) [2021-11-20 23:33:44,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19649 states to 19649 states and 28043 transitions. [2021-11-20 23:33:44,225 INFO L78 Accepts]: Start accepts. Automaton has 19649 states and 28043 transitions. Word has length 223 [2021-11-20 23:33:44,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:44,227 INFO L470 AbstractCegarLoop]: Abstraction has 19649 states and 28043 transitions. [2021-11-20 23:33:44,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-20 23:33:44,227 INFO L276 IsEmpty]: Start isEmpty. Operand 19649 states and 28043 transitions. [2021-11-20 23:33:44,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-20 23:33:44,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:44,237 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 4, 4, 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] [2021-11-20 23:33:44,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:33:44,238 INFO L402 AbstractCegarLoop]: === Iteration 9 === 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)] === [2021-11-20 23:33:44,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:44,239 INFO L85 PathProgramCache]: Analyzing trace with hash 548883255, now seen corresponding path program 1 times [2021-11-20 23:33:44,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:44,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971111937] [2021-11-20 23:33:44,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:44,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:44,411 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-20 23:33:44,412 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:44,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971111937] [2021-11-20 23:33:44,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971111937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:44,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:44,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:33:44,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301929156] [2021-11-20 23:33:44,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:44,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:33:44,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:44,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:33:44,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:44,416 INFO L87 Difference]: Start difference. First operand 19649 states and 28043 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-20 23:33:48,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:48,980 INFO L93 Difference]: Finished difference Result 46109 states and 65838 transitions. [2021-11-20 23:33:48,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:33:48,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 228 [2021-11-20 23:33:48,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:49,126 INFO L225 Difference]: With dead ends: 46109 [2021-11-20 23:33:49,126 INFO L226 Difference]: Without dead ends: 26608 [2021-11-20 23:33:49,217 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 [2021-11-20 23:33:49,220 INFO L933 BasicCegarLoop]: 4094 mSDtfsCounter, 1949 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1949 SdHoareTripleChecker+Valid, 6534 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:49,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1949 Valid, 6534 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-20 23:33:49,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26608 states. [2021-11-20 23:33:50,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26608 to 26557. [2021-11-20 23:33:50,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26557 states, 14868 states have (on average 1.249327414581652) internal successors, (18575), 15398 states have internal predecessors, (18575), 9609 states have call successors, (9609), 2114 states have call predecessors, (9609), 2077 states have return successors, (9623), 9344 states have call predecessors, (9623), 9605 states have call successors, (9623) [2021-11-20 23:33:50,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26557 states to 26557 states and 37807 transitions. [2021-11-20 23:33:50,785 INFO L78 Accepts]: Start accepts. Automaton has 26557 states and 37807 transitions. Word has length 228 [2021-11-20 23:33:50,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:50,786 INFO L470 AbstractCegarLoop]: Abstraction has 26557 states and 37807 transitions. [2021-11-20 23:33:50,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-20 23:33:50,786 INFO L276 IsEmpty]: Start isEmpty. Operand 26557 states and 37807 transitions. [2021-11-20 23:33:50,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-20 23:33:50,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:50,792 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:33:50,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 23:33:50,793 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)] === [2021-11-20 23:33:50,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:50,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1186664916, now seen corresponding path program 1 times [2021-11-20 23:33:50,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:50,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984090777] [2021-11-20 23:33:50,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:50,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:51,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1019 trivial. 0 not checked. [2021-11-20 23:33:51,317 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:51,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984090777] [2021-11-20 23:33:51,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984090777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:51,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:51,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:33:51,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458219931] [2021-11-20 23:33:51,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:51,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:33:51,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:51,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:33:51,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:33:51,319 INFO L87 Difference]: Start difference. First operand 26557 states and 37807 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-20 23:33:55,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:56,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:56,177 INFO L93 Difference]: Finished difference Result 26563 states and 37812 transitions. [2021-11-20 23:33:56,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:33:56,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 232 [2021-11-20 23:33:56,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:56,258 INFO L225 Difference]: With dead ends: 26563 [2021-11-20 23:33:56,258 INFO L226 Difference]: Without dead ends: 26561 [2021-11-20 23:33:56,268 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 [2021-11-20 23:33:56,269 INFO L933 BasicCegarLoop]: 2480 mSDtfsCounter, 2737 mSDsluCounter, 5585 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2745 SdHoareTripleChecker+Valid, 7421 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:56,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2745 Valid, 7421 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-20 23:33:56,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26561 states. [2021-11-20 23:33:57,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26561 to 26561. [2021-11-20 23:33:57,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26561 states, 14871 states have (on average 1.249277116535539) internal successors, (18578), 15401 states have internal predecessors, (18578), 9609 states have call successors, (9609), 2115 states have call predecessors, (9609), 2078 states have return successors, (9623), 9344 states have call predecessors, (9623), 9605 states have call successors, (9623) [2021-11-20 23:33:57,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26561 states to 26561 states and 37810 transitions. [2021-11-20 23:33:57,794 INFO L78 Accepts]: Start accepts. Automaton has 26561 states and 37810 transitions. Word has length 232 [2021-11-20 23:33:57,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:57,794 INFO L470 AbstractCegarLoop]: Abstraction has 26561 states and 37810 transitions. [2021-11-20 23:33:57,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-20 23:33:57,795 INFO L276 IsEmpty]: Start isEmpty. Operand 26561 states and 37810 transitions. [2021-11-20 23:33:57,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-20 23:33:57,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:57,802 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:33:57,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 23:33:57,803 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:33:57,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:57,803 INFO L85 PathProgramCache]: Analyzing trace with hash 897101210, now seen corresponding path program 1 times [2021-11-20 23:33:57,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:57,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117305039] [2021-11-20 23:33:57,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:57,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1031 trivial. 0 not checked. [2021-11-20 23:33:58,015 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:58,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117305039] [2021-11-20 23:33:58,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117305039] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:58,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:58,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:33:58,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855691078] [2021-11-20 23:33:58,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:58,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:33:58,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:58,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:33:58,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:33:58,018 INFO L87 Difference]: Start difference. First operand 26561 states and 37810 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-20 23:34:01,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:34:01,725 INFO L93 Difference]: Finished difference Result 26567 states and 37815 transitions. [2021-11-20 23:34:01,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:34:01,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 237 [2021-11-20 23:34:01,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:34:01,815 INFO L225 Difference]: With dead ends: 26567 [2021-11-20 23:34:01,816 INFO L226 Difference]: Without dead ends: 26565 [2021-11-20 23:34:01,826 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 [2021-11-20 23:34:01,827 INFO L933 BasicCegarLoop]: 2480 mSDtfsCounter, 2737 mSDsluCounter, 5585 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2744 SdHoareTripleChecker+Valid, 7421 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:34:01,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2744 Valid, 7421 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-20 23:34:01,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26565 states. [2021-11-20 23:34:03,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26565 to 26565. [2021-11-20 23:34:03,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26565 states, 14874 states have (on average 1.2492268387790775) internal successors, (18581), 15404 states have internal predecessors, (18581), 9609 states have call successors, (9609), 2116 states have call predecessors, (9609), 2079 states have return successors, (9623), 9344 states have call predecessors, (9623), 9605 states have call successors, (9623) [2021-11-20 23:34:03,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26565 states to 26565 states and 37813 transitions. [2021-11-20 23:34:03,302 INFO L78 Accepts]: Start accepts. Automaton has 26565 states and 37813 transitions. Word has length 237 [2021-11-20 23:34:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:34:03,303 INFO L470 AbstractCegarLoop]: Abstraction has 26565 states and 37813 transitions. [2021-11-20 23:34:03,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-20 23:34:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 26565 states and 37813 transitions. [2021-11-20 23:34:03,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-20 23:34:03,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:34:03,311 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:34:03,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 23:34:03,311 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)] === [2021-11-20 23:34:03,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:34:03,312 INFO L85 PathProgramCache]: Analyzing trace with hash 954358699, now seen corresponding path program 1 times [2021-11-20 23:34:03,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:34:03,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989457001] [2021-11-20 23:34:03,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:34:03,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:34:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:34:03,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1049 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1039 trivial. 0 not checked. [2021-11-20 23:34:03,554 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:34:03,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989457001] [2021-11-20 23:34:03,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989457001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:34:03,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:34:03,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:34:03,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567871260] [2021-11-20 23:34:03,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:34:03,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:34:03,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:34:03,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:34:03,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:34:03,557 INFO L87 Difference]: Start difference. First operand 26565 states and 37813 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-20 23:34:07,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:34:07,631 INFO L93 Difference]: Finished difference Result 26571 states and 37818 transitions. [2021-11-20 23:34:07,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:34:07,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 238 [2021-11-20 23:34:07,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:34:07,722 INFO L225 Difference]: With dead ends: 26571 [2021-11-20 23:34:07,723 INFO L226 Difference]: Without dead ends: 26569 [2021-11-20 23:34:07,735 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 [2021-11-20 23:34:07,735 INFO L933 BasicCegarLoop]: 2480 mSDtfsCounter, 2738 mSDsluCounter, 5585 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2744 SdHoareTripleChecker+Valid, 7421 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:34:07,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2744 Valid, 7421 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-20 23:34:07,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26569 states. [2021-11-20 23:34:08,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26569 to 26569. [2021-11-20 23:34:08,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26569 states, 14877 states have (on average 1.2491765812999933) internal successors, (18584), 15407 states have internal predecessors, (18584), 9609 states have call successors, (9609), 2117 states have call predecessors, (9609), 2080 states have return successors, (9623), 9344 states have call predecessors, (9623), 9605 states have call successors, (9623) [2021-11-20 23:34:09,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26569 states to 26569 states and 37816 transitions. [2021-11-20 23:34:09,150 INFO L78 Accepts]: Start accepts. Automaton has 26569 states and 37816 transitions. Word has length 238 [2021-11-20 23:34:09,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:34:09,151 INFO L470 AbstractCegarLoop]: Abstraction has 26569 states and 37816 transitions. [2021-11-20 23:34:09,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-20 23:34:09,152 INFO L276 IsEmpty]: Start isEmpty. Operand 26569 states and 37816 transitions. [2021-11-20 23:34:09,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-20 23:34:09,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:34:09,160 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 7, 6, 6, 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] [2021-11-20 23:34:09,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 23:34:09,160 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:34:09,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:34:09,161 INFO L85 PathProgramCache]: Analyzing trace with hash -556562022, now seen corresponding path program 1 times [2021-11-20 23:34:09,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:34:09,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101332434] [2021-11-20 23:34:09,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:34:09,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:34:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:34:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1067 trivial. 0 not checked. [2021-11-20 23:34:09,404 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:34:09,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101332434] [2021-11-20 23:34:09,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101332434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:34:09,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:34:09,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:34:09,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547602599] [2021-11-20 23:34:09,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:34:09,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:34:09,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:34:09,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:34:09,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:34:09,407 INFO L87 Difference]: Start difference. First operand 26569 states and 37816 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 23:34:14,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:34:14,121 INFO L93 Difference]: Finished difference Result 31147 states and 43613 transitions. [2021-11-20 23:34:14,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:34:14,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 247 [2021-11-20 23:34:14,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:34:14,327 INFO L225 Difference]: With dead ends: 31147 [2021-11-20 23:34:14,327 INFO L226 Difference]: Without dead ends: 31145 [2021-11-20 23:34:14,336 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 [2021-11-20 23:34:14,337 INFO L933 BasicCegarLoop]: 2778 mSDtfsCounter, 2052 mSDsluCounter, 7522 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2057 SdHoareTripleChecker+Valid, 9498 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:34:14,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2057 Valid, 9498 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-20 23:34:14,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31145 states. [2021-11-20 23:34:15,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31145 to 31145. [2021-11-20 23:34:15,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31145 states, 17288 states have (on average 1.2350185099490976) internal successors, (21351), 17870 states have internal predecessors, (21351), 11123 states have call successors, (11123), 2768 states have call predecessors, (11123), 2731 states have return successors, (11137), 10858 states have call predecessors, (11137), 11119 states have call successors, (11137) [2021-11-20 23:34:15,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31145 states to 31145 states and 43611 transitions. [2021-11-20 23:34:15,800 INFO L78 Accepts]: Start accepts. Automaton has 31145 states and 43611 transitions. Word has length 247 [2021-11-20 23:34:15,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:34:15,801 INFO L470 AbstractCegarLoop]: Abstraction has 31145 states and 43611 transitions. [2021-11-20 23:34:15,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 23:34:15,801 INFO L276 IsEmpty]: Start isEmpty. Operand 31145 states and 43611 transitions. [2021-11-20 23:34:15,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-20 23:34:15,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:34:15,808 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 8, 7, 7, 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] [2021-11-20 23:34:15,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 23:34:15,808 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:34:15,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:34:15,809 INFO L85 PathProgramCache]: Analyzing trace with hash 267137377, now seen corresponding path program 1 times [2021-11-20 23:34:15,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:34:15,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294185342] [2021-11-20 23:34:15,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:34:15,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:34:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:34:16,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-11-20 23:34:16,012 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:34:16,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294185342] [2021-11-20 23:34:16,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294185342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:34:16,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:34:16,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:34:16,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921659988] [2021-11-20 23:34:16,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:34:16,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:34:16,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:34:16,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:34:16,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:34:16,015 INFO L87 Difference]: Start difference. First operand 31145 states and 43611 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-20 23:34:20,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:34:20,451 INFO L93 Difference]: Finished difference Result 31151 states and 43616 transitions. [2021-11-20 23:34:20,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:34:20,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 251 [2021-11-20 23:34:20,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:34:20,549 INFO L225 Difference]: With dead ends: 31151 [2021-11-20 23:34:20,549 INFO L226 Difference]: Without dead ends: 31149 [2021-11-20 23:34:20,562 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 [2021-11-20 23:34:20,563 INFO L933 BasicCegarLoop]: 2480 mSDtfsCounter, 2737 mSDsluCounter, 5585 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2741 SdHoareTripleChecker+Valid, 7421 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:34:20,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2741 Valid, 7421 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-20 23:34:20,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31149 states. [2021-11-20 23:34:22,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31149 to 31149. [2021-11-20 23:34:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31149 states, 17291 states have (on average 1.234977734081314) internal successors, (21354), 17873 states have internal predecessors, (21354), 11123 states have call successors, (11123), 2769 states have call predecessors, (11123), 2732 states have return successors, (11137), 10858 states have call predecessors, (11137), 11119 states have call successors, (11137) [2021-11-20 23:34:22,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31149 states to 31149 states and 43614 transitions. [2021-11-20 23:34:22,192 INFO L78 Accepts]: Start accepts. Automaton has 31149 states and 43614 transitions. Word has length 251 [2021-11-20 23:34:22,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:34:22,193 INFO L470 AbstractCegarLoop]: Abstraction has 31149 states and 43614 transitions. [2021-11-20 23:34:22,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-20 23:34:22,193 INFO L276 IsEmpty]: Start isEmpty. Operand 31149 states and 43614 transitions. [2021-11-20 23:34:22,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-20 23:34:22,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:34:22,199 INFO L514 BasicCegarLoop]: trace histogram [20, 15, 15, 15, 15, 15, 15, 6, 6, 3, 3, 3, 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] [2021-11-20 23:34:22,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 23:34:22,199 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:34:22,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:34:22,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1263152662, now seen corresponding path program 1 times [2021-11-20 23:34:22,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:34:22,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883931107] [2021-11-20 23:34:22,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:34:22,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:34:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:34:22,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-11-20 23:34:22,352 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:34:22,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883931107] [2021-11-20 23:34:22,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883931107] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:34:22,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:34:22,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:34:22,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981455996] [2021-11-20 23:34:22,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:34:22,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:34:22,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:34:22,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:34:22,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:34:22,355 INFO L87 Difference]: Start difference. First operand 31149 states and 43614 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-20 23:34:27,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:34:27,609 INFO L93 Difference]: Finished difference Result 77426 states and 108435 transitions. [2021-11-20 23:34:27,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:34:27,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 252 [2021-11-20 23:34:27,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:34:27,787 INFO L225 Difference]: With dead ends: 77426 [2021-11-20 23:34:27,787 INFO L226 Difference]: Without dead ends: 46425 [2021-11-20 23:34:27,880 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 [2021-11-20 23:34:27,881 INFO L933 BasicCegarLoop]: 4859 mSDtfsCounter, 2687 mSDsluCounter, 2777 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2687 SdHoareTripleChecker+Valid, 7322 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:34:27,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2687 Valid, 7322 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-20 23:34:27,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46425 states. [2021-11-20 23:34:30,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46425 to 46344. [2021-11-20 23:34:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46344 states, 25696 states have (on average 1.2342387920298878) internal successors, (31715), 26580 states have internal predecessors, (31715), 16571 states have call successors, (16571), 4129 states have call predecessors, (16571), 4074 states have return successors, (16594), 16162 states have call predecessors, (16594), 16567 states have call successors, (16594) [2021-11-20 23:34:30,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46344 states to 46344 states and 64880 transitions. [2021-11-20 23:34:30,662 INFO L78 Accepts]: Start accepts. Automaton has 46344 states and 64880 transitions. Word has length 252 [2021-11-20 23:34:30,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:34:30,663 INFO L470 AbstractCegarLoop]: Abstraction has 46344 states and 64880 transitions. [2021-11-20 23:34:30,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-20 23:34:30,664 INFO L276 IsEmpty]: Start isEmpty. Operand 46344 states and 64880 transitions. [2021-11-20 23:34:30,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-20 23:34:30,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:34:30,670 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 9, 8, 8, 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] [2021-11-20 23:34:30,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 23:34:30,670 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:34:30,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:34:30,671 INFO L85 PathProgramCache]: Analyzing trace with hash -876800614, now seen corresponding path program 1 times [2021-11-20 23:34:30,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:34:30,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849853251] [2021-11-20 23:34:30,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:34:30,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:34:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:34:30,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1119 trivial. 0 not checked. [2021-11-20 23:34:30,909 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:34:30,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849853251] [2021-11-20 23:34:30,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849853251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:34:30,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:34:30,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:34:30,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240985811] [2021-11-20 23:34:30,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:34:30,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:34:30,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:34:30,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:34:30,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:34:30,913 INFO L87 Difference]: Start difference. First operand 46344 states and 64880 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-20 23:34:36,140 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:34:37,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:34:37,746 INFO L93 Difference]: Finished difference Result 46350 states and 64885 transitions. [2021-11-20 23:34:37,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:34:37,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 257 [2021-11-20 23:34:37,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:34:37,913 INFO L225 Difference]: With dead ends: 46350 [2021-11-20 23:34:37,913 INFO L226 Difference]: Without dead ends: 46348 [2021-11-20 23:34:37,929 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 [2021-11-20 23:34:37,930 INFO L933 BasicCegarLoop]: 2480 mSDtfsCounter, 2737 mSDsluCounter, 5585 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2740 SdHoareTripleChecker+Valid, 7421 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:34:37,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2740 Valid, 7421 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 984 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-11-20 23:34:37,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46348 states. [2021-11-20 23:34:40,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46348 to 46348. [2021-11-20 23:34:40,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46348 states, 25699 states have (on average 1.2342114479162614) internal successors, (31718), 26583 states have internal predecessors, (31718), 16571 states have call successors, (16571), 4130 states have call predecessors, (16571), 4075 states have return successors, (16594), 16162 states have call predecessors, (16594), 16567 states have call successors, (16594) [2021-11-20 23:34:40,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46348 states to 46348 states and 64883 transitions. [2021-11-20 23:34:40,719 INFO L78 Accepts]: Start accepts. Automaton has 46348 states and 64883 transitions. Word has length 257 [2021-11-20 23:34:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:34:40,720 INFO L470 AbstractCegarLoop]: Abstraction has 46348 states and 64883 transitions. [2021-11-20 23:34:40,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-20 23:34:40,720 INFO L276 IsEmpty]: Start isEmpty. Operand 46348 states and 64883 transitions. [2021-11-20 23:34:40,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-20 23:34:40,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:34:40,727 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 10, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:34:40,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 23:34:40,727 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:34:40,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:34:40,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1058029269, now seen corresponding path program 1 times [2021-11-20 23:34:40,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:34:40,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694320015] [2021-11-20 23:34:40,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:34:40,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:34:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat