./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/bin/utaipan-eEHZpOm5b7 --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 10193951df4eb6f67d99eaaa8758acfa57b6461ca38071389a41cbdc5c585dfb --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:23:55,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:23:55,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:23:55,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:23:55,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:23:55,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:23:55,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:23:55,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:23:55,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:23:56,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:23:56,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:23:56,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:23:56,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:23:56,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:23:56,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:23:56,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:23:56,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:23:56,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:23:56,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:23:56,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:23:56,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:23:56,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:23:56,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:23:56,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:23:56,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:23:56,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:23:56,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:23:56,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:23:56,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:23:56,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:23:56,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:23:56,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:23:56,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:23:56,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:23:56,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:23:56,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:23:56,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:23:56,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:23:56,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:23:56,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:23:56,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:23:56,057 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:23:56,109 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:23:56,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:23:56,110 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:23:56,110 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:23:56,111 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:23:56,111 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:23:56,112 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:23:56,112 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:23:56,112 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:23:56,112 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:23:56,113 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:23:56,114 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:23:56,114 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:23:56,114 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:23:56,120 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:23:56,121 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:23:56,121 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:23:56,121 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:23:56,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:23:56,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:23:56,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:23:56,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:23:56,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:23:56,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:23:56,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:23:56,123 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:23:56,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:23:56,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:23:56,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:23:56,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:23:56,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:23:56,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:23:56,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:23:56,127 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:23:56,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:23:56,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:23:56,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:23:56,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:23:56,128 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_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10193951df4eb6f67d99eaaa8758acfa57b6461ca38071389a41cbdc5c585dfb [2021-11-25 20:23:56,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:23:56,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:23:56,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:23:56,425 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:23:56,429 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:23:56,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i [2021-11-25 20:23:56,507 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/bin/utaipan-eEHZpOm5b7/data/d1a939c86/3711733784dc4264aa23ac35db03f91d/FLAG34d5de24a [2021-11-25 20:23:57,535 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:23:57,536 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i [2021-11-25 20:23:57,590 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/bin/utaipan-eEHZpOm5b7/data/d1a939c86/3711733784dc4264aa23ac35db03f91d/FLAG34d5de24a [2021-11-25 20:23:57,909 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/bin/utaipan-eEHZpOm5b7/data/d1a939c86/3711733784dc4264aa23ac35db03f91d [2021-11-25 20:23:57,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:23:57,912 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:23:57,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:23:57,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:23:57,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:23:57,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:23:57" (1/1) ... [2021-11-25 20:23:57,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c0ee8b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:23:57, skipping insertion in model container [2021-11-25 20:23:57,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:23:57" (1/1) ... [2021-11-25 20:23:57,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:23:58,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:24:01,157 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_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i[341176,341189] [2021-11-25 20:24:01,162 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_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i[341345,341358] [2021-11-25 20:24:01,163 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_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i[341512,341525] [2021-11-25 20:24:01,164 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_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i[341680,341693] [2021-11-25 20:24:01,192 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:24:01,243 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:24:01,696 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_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i[341176,341189] [2021-11-25 20:24:01,696 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_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i[341345,341358] [2021-11-25 20:24:01,697 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_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i[341512,341525] [2021-11-25 20:24:01,697 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_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i[341680,341693] [2021-11-25 20:24:01,707 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:24:01,905 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:24:01,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:01 WrapperNode [2021-11-25 20:24:01,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:24:01,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:24:01,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:24:01,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:24:01,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:01" (1/1) ... [2021-11-25 20:24:02,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:01" (1/1) ... [2021-11-25 20:24:02,218 INFO L137 Inliner]: procedures = 427, calls = 1735, calls flagged for inlining = 206, calls inlined = 187, statements flattened = 4611 [2021-11-25 20:24:02,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:24:02,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:24:02,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:24:02,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:24:02,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:01" (1/1) ... [2021-11-25 20:24:02,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:01" (1/1) ... [2021-11-25 20:24:02,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:01" (1/1) ... [2021-11-25 20:24:02,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:01" (1/1) ... [2021-11-25 20:24:02,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:01" (1/1) ... [2021-11-25 20:24:02,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:01" (1/1) ... [2021-11-25 20:24:02,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:01" (1/1) ... [2021-11-25 20:24:02,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:24:02,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:24:02,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:24:02,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:24:02,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:01" (1/1) ... [2021-11-25 20:24:02,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:24:02,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:24:02,614 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:24:02,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ff525f-a684-4ce2-b4c0-d2cd5ca0685d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:24:02,662 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2021-11-25 20:24:02,662 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2021-11-25 20:24:02,662 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 20:24:02,663 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 20:24:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 20:24:02,663 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 20:24:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_82 [2021-11-25 20:24:02,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_82 [2021-11-25 20:24:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 20:24:02,663 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 20:24:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 20:24:02,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 20:24:02,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rr_driver_exit_13_2 [2021-11-25 20:24:02,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rr_driver_exit_13_2 [2021-11-25 20:24:02,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_rr_private [2021-11-25 20:24:02,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_rr_private [2021-11-25 20:24:02,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 20:24:02,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 20:24:02,664 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 20:24:02,665 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 20:24:02,665 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-25 20:24:02,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 20:24:02,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 20:24:02,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 20:24:02,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 20:24:02,666 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 20:24:02,666 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 20:24:02,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:24:02,666 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-25 20:24:02,666 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-25 20:24:02,666 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 20:24:02,667 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 20:24:02,667 INFO L130 BoogieDeclarations]: Found specification of procedure set_rraddr [2021-11-25 20:24:02,667 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rraddr [2021-11-25 20:24:02,667 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 20:24:02,667 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 20:24:02,668 INFO L130 BoogieDeclarations]: Found specification of procedure rr_read_eeprom_word [2021-11-25 20:24:02,668 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_read_eeprom_word [2021-11-25 20:24:02,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 20:24:02,668 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-25 20:24:02,668 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-25 20:24:02,669 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 20:24:02,669 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 20:24:02,669 INFO L130 BoogieDeclarations]: Found specification of procedure rr_read_eeprom [2021-11-25 20:24:02,670 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_read_eeprom [2021-11-25 20:24:02,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 20:24:02,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 20:24:02,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 20:24:02,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:24:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 20:24:02,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 20:24:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 20:24:02,671 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 20:24:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 20:24:02,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 20:24:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 20:24:02,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 20:24:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 20:24:02,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 20:24:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 20:24:02,672 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 20:24:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 20:24:02,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 20:24:02,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:24:02,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 20:24:02,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 20:24:02,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:24:02,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 20:24:02,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 20:24:02,674 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 20:24:02,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 20:24:02,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:24:02,675 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:24:02,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:24:02,675 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-25 20:24:02,675 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-25 20:24:02,675 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:24:02,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:24:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_rr_private [2021-11-25 20:24:02,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_rr_private [2021-11-25 20:24:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 20:24:02,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 20:24:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 20:24:02,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 20:24:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 20:24:02,677 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 20:24:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-25 20:24:02,678 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-25 20:24:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 20:24:02,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 20:24:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 20:24:02,679 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 20:24:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:24:02,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:24:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-25 20:24:02,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-25 20:24:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 20:24:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 20:24:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 20:24:02,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 20:24:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 20:24:02,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 20:24:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 20:24:02,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 20:24:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure rr_remove_one [2021-11-25 20:24:02,682 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_remove_one [2021-11-25 20:24:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 20:24:02,684 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 20:24:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 20:24:02,684 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 20:24:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 20:24:02,686 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 20:24:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-25 20:24:02,686 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-25 20:24:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure rr_init1 [2021-11-25 20:24:02,693 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_init1 [2021-11-25 20:24:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 20:24:02,693 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 20:24:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-25 20:24:02,693 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-25 20:24:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:24:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure rr_open [2021-11-25 20:24:02,694 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_open [2021-11-25 20:24:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:24:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-25 20:24:02,694 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-25 20:24:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:24:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-25 20:24:02,694 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-25 20:24:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 20:24:02,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 20:24:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 20:24:02,695 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 20:24:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 20:24:02,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 20:24:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 20:24:02,695 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 20:24:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 20:24:02,695 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 20:24:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 20:24:02,696 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 20:24:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:24:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 20:24:02,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 20:24:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure rr_raz_tx [2021-11-25 20:24:02,696 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_raz_tx [2021-11-25 20:24:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure rr_close [2021-11-25 20:24:02,696 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_close [2021-11-25 20:24:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 20:24:02,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 20:24:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-25 20:24:02,697 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-25 20:24:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 20:24:02,697 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 20:24:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:24:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 20:24:02,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 20:24:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure rr_raz_rx [2021-11-25 20:24:02,698 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_raz_rx [2021-11-25 20:24:03,568 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:24:03,571 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:24:04,247 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 20:24:06,150 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 20:24:06,243 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:24:07,044 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:24:07,044 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 20:24:07,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:24:07 BoogieIcfgContainer [2021-11-25 20:24:07,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:24:07,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:24:07,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:24:07,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:24:07,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:23:57" (1/3) ... [2021-11-25 20:24:07,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1535fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:24:07, skipping insertion in model container [2021-11-25 20:24:07,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:01" (2/3) ... [2021-11-25 20:24:07,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1535fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:24:07, skipping insertion in model container [2021-11-25 20:24:07,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:24:07" (3/3) ... [2021-11-25 20:24:07,063 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i [2021-11-25 20:24:07,069 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:24:07,069 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 20:24:07,137 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:24:07,152 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 [2021-11-25 20:24:07,153 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 20:24:07,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 1212 states, 670 states have (on average 1.3044776119402985) internal successors, (874), 695 states have internal predecessors, (874), 469 states have call successors, (469), 71 states have call predecessors, (469), 70 states have return successors, (463), 452 states have call predecessors, (463), 463 states have call successors, (463) [2021-11-25 20:24:07,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 20:24:07,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:07,242 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:24:07,243 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)] === [2021-11-25 20:24:07,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:07,248 INFO L85 PathProgramCache]: Analyzing trace with hash -579458953, now seen corresponding path program 1 times [2021-11-25 20:24:07,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:07,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640715665] [2021-11-25 20:24:07,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:07,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-25 20:24:07,867 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:07,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640715665] [2021-11-25 20:24:07,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640715665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:07,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:07,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:24:07,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750355110] [2021-11-25 20:24:07,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:07,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:24:07,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:07,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:24:07,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:24:07,919 INFO L87 Difference]: Start difference. First operand has 1212 states, 670 states have (on average 1.3044776119402985) internal successors, (874), 695 states have internal predecessors, (874), 469 states have call successors, (469), 71 states have call predecessors, (469), 70 states have return successors, (463), 452 states have call predecessors, (463), 463 states have call successors, (463) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:24:08,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:08,966 INFO L93 Difference]: Finished difference Result 3529 states and 5347 transitions. [2021-11-25 20:24:08,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:24:08,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2021-11-25 20:24:08,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:09,023 INFO L225 Difference]: With dead ends: 3529 [2021-11-25 20:24:09,023 INFO L226 Difference]: Without dead ends: 2322 [2021-11-25 20:24:09,043 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 [2021-11-25 20:24:09,046 INFO L933 BasicCegarLoop]: 2002 mSDtfsCounter, 1689 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 3543 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:09,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1689 Valid, 3543 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:24:09,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2021-11-25 20:24:09,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 2318. [2021-11-25 20:24:09,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 1295 states have (on average 1.2972972972972974) internal successors, (1680), 1344 states have internal predecessors, (1680), 884 states have call successors, (884), 137 states have call predecessors, (884), 136 states have return successors, (880), 858 states have call predecessors, (880), 880 states have call successors, (880) [2021-11-25 20:24:09,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 3444 transitions. [2021-11-25 20:24:09,345 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 3444 transitions. Word has length 91 [2021-11-25 20:24:09,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:09,346 INFO L470 AbstractCegarLoop]: Abstraction has 2318 states and 3444 transitions. [2021-11-25 20:24:09,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:24:09,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 3444 transitions. [2021-11-25 20:24:09,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 20:24:09,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:09,354 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:24:09,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:24:09,354 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)] === [2021-11-25 20:24:09,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:09,355 INFO L85 PathProgramCache]: Analyzing trace with hash 500607433, now seen corresponding path program 1 times [2021-11-25 20:24:09,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:09,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319065685] [2021-11-25 20:24:09,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:09,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-25 20:24:09,501 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:09,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319065685] [2021-11-25 20:24:09,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319065685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:09,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:09,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:24:09,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279762840] [2021-11-25 20:24:09,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:09,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:24:09,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:09,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:24:09,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:24:09,505 INFO L87 Difference]: Start difference. First operand 2318 states and 3444 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 20:24:10,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:10,412 INFO L93 Difference]: Finished difference Result 6550 states and 9706 transitions. [2021-11-25 20:24:10,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:24:10,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 98 [2021-11-25 20:24:10,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:10,453 INFO L225 Difference]: With dead ends: 6550 [2021-11-25 20:24:10,454 INFO L226 Difference]: Without dead ends: 4247 [2021-11-25 20:24:10,467 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 [2021-11-25 20:24:10,468 INFO L933 BasicCegarLoop]: 2041 mSDtfsCounter, 1489 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 3565 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:10,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1489 Valid, 3565 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:24:10,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4247 states. [2021-11-25 20:24:10,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4247 to 4215. [2021-11-25 20:24:10,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4215 states, 2336 states have (on average 1.2846746575342465) internal successors, (3001), 2412 states have internal predecessors, (3001), 1613 states have call successors, (1613), 270 states have call predecessors, (1613), 263 states have return successors, (1621), 1568 states have call predecessors, (1621), 1609 states have call successors, (1621) [2021-11-25 20:24:10,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4215 states to 4215 states and 6235 transitions. [2021-11-25 20:24:10,804 INFO L78 Accepts]: Start accepts. Automaton has 4215 states and 6235 transitions. Word has length 98 [2021-11-25 20:24:10,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:10,806 INFO L470 AbstractCegarLoop]: Abstraction has 4215 states and 6235 transitions. [2021-11-25 20:24:10,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 20:24:10,807 INFO L276 IsEmpty]: Start isEmpty. Operand 4215 states and 6235 transitions. [2021-11-25 20:24:10,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-25 20:24:10,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:10,811 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:24:10,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:24:10,811 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)] === [2021-11-25 20:24:10,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:10,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1767529696, now seen corresponding path program 1 times [2021-11-25 20:24:10,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:10,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961832299] [2021-11-25 20:24:10,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:10,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:11,059 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-25 20:24:11,059 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:11,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961832299] [2021-11-25 20:24:11,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961832299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:11,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:11,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:24:11,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298817865] [2021-11-25 20:24:11,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:11,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:24:11,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:11,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:24:11,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:24:11,066 INFO L87 Difference]: Start difference. First operand 4215 states and 6235 transitions. 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:24:11,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:11,959 INFO L93 Difference]: Finished difference Result 8466 states and 12512 transitions. [2021-11-25 20:24:11,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:24:11,960 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 101 [2021-11-25 20:24:11,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:11,999 INFO L225 Difference]: With dead ends: 8466 [2021-11-25 20:24:11,999 INFO L226 Difference]: Without dead ends: 4266 [2021-11-25 20:24:12,019 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 [2021-11-25 20:24:12,026 INFO L933 BasicCegarLoop]: 1988 mSDtfsCounter, 1227 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 3508 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:12,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1227 Valid, 3508 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:24:12,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2021-11-25 20:24:12,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 4236. [2021-11-25 20:24:12,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4236 states, 2337 states have (on average 1.278990158322636) internal successors, (2989), 2413 states have internal predecessors, (2989), 1611 states have call successors, (1611), 291 states have call predecessors, (1611), 285 states have return successors, (1613), 1565 states have call predecessors, (1613), 1607 states have call successors, (1613) [2021-11-25 20:24:12,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4236 states to 4236 states and 6213 transitions. [2021-11-25 20:24:12,464 INFO L78 Accepts]: Start accepts. Automaton has 4236 states and 6213 transitions. Word has length 101 [2021-11-25 20:24:12,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:12,467 INFO L470 AbstractCegarLoop]: Abstraction has 4236 states and 6213 transitions. [2021-11-25 20:24:12,467 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:24:12,467 INFO L276 IsEmpty]: Start isEmpty. Operand 4236 states and 6213 transitions. [2021-11-25 20:24:12,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-25 20:24:12,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:12,476 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:24:12,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:24:12,477 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)] === [2021-11-25 20:24:12,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:12,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1443289555, now seen corresponding path program 1 times [2021-11-25 20:24:12,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:12,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221240232] [2021-11-25 20:24:12,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:12,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:12,678 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-25 20:24:12,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:12,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221240232] [2021-11-25 20:24:12,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221240232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:12,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:12,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:24:12,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733811019] [2021-11-25 20:24:12,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:12,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:24:12,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:12,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:24:12,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:24:12,682 INFO L87 Difference]: Start difference. First operand 4236 states and 6213 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 20:24:13,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:13,713 INFO L93 Difference]: Finished difference Result 11148 states and 16342 transitions. [2021-11-25 20:24:13,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:24:13,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2021-11-25 20:24:13,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:13,779 INFO L225 Difference]: With dead ends: 11148 [2021-11-25 20:24:13,779 INFO L226 Difference]: Without dead ends: 6927 [2021-11-25 20:24:13,802 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 [2021-11-25 20:24:13,805 INFO L933 BasicCegarLoop]: 1946 mSDtfsCounter, 1491 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 3465 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:13,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1491 Valid, 3465 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:24:13,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6927 states. [2021-11-25 20:24:14,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6927 to 6896. [2021-11-25 20:24:14,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6896 states, 3786 states have (on average 1.272054939249868) internal successors, (4816), 3923 states have internal predecessors, (4816), 2630 states have call successors, (2630), 490 states have call predecessors, (2630), 477 states have return successors, (2638), 2533 states have call predecessors, (2638), 2626 states have call successors, (2638) [2021-11-25 20:24:14,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6896 states to 6896 states and 10084 transitions. [2021-11-25 20:24:14,453 INFO L78 Accepts]: Start accepts. Automaton has 6896 states and 10084 transitions. Word has length 114 [2021-11-25 20:24:14,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:14,453 INFO L470 AbstractCegarLoop]: Abstraction has 6896 states and 10084 transitions. [2021-11-25 20:24:14,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 20:24:14,455 INFO L276 IsEmpty]: Start isEmpty. Operand 6896 states and 10084 transitions. [2021-11-25 20:24:14,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-25 20:24:14,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:14,457 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 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] [2021-11-25 20:24:14,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:24:14,458 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)] === [2021-11-25 20:24:14,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:14,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1988526711, now seen corresponding path program 1 times [2021-11-25 20:24:14,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:14,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443765167] [2021-11-25 20:24:14,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:14,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:14,634 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-25 20:24:14,634 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:14,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443765167] [2021-11-25 20:24:14,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443765167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:14,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:14,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:24:14,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777987004] [2021-11-25 20:24:14,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:14,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:24:14,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:14,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:24:14,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:24:14,637 INFO L87 Difference]: Start difference. First operand 6896 states and 10084 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 20:24:15,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:15,745 INFO L93 Difference]: Finished difference Result 18916 states and 27596 transitions. [2021-11-25 20:24:15,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:24:15,746 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 124 [2021-11-25 20:24:15,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:15,856 INFO L225 Difference]: With dead ends: 18916 [2021-11-25 20:24:15,856 INFO L226 Difference]: Without dead ends: 12035 [2021-11-25 20:24:15,891 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 [2021-11-25 20:24:15,892 INFO L933 BasicCegarLoop]: 2326 mSDtfsCounter, 1709 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 3824 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:15,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1709 Valid, 3824 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:24:15,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12035 states. [2021-11-25 20:24:16,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12035 to 11994. [2021-11-25 20:24:16,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11994 states, 6727 states have (on average 1.2797680987067044) internal successors, (8609), 7003 states have internal predecessors, (8609), 4420 states have call successors, (4420), 873 states have call predecessors, (4420), 844 states have return successors, (4444), 4210 states have call predecessors, (4444), 4416 states have call successors, (4444) [2021-11-25 20:24:16,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11994 states to 11994 states and 17473 transitions. [2021-11-25 20:24:16,857 INFO L78 Accepts]: Start accepts. Automaton has 11994 states and 17473 transitions. Word has length 124 [2021-11-25 20:24:16,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:16,858 INFO L470 AbstractCegarLoop]: Abstraction has 11994 states and 17473 transitions. [2021-11-25 20:24:16,858 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 20:24:16,858 INFO L276 IsEmpty]: Start isEmpty. Operand 11994 states and 17473 transitions. [2021-11-25 20:24:16,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-25 20:24:16,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:16,861 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 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] [2021-11-25 20:24:16,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:24:16,862 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)] === [2021-11-25 20:24:16,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:16,862 INFO L85 PathProgramCache]: Analyzing trace with hash 456897818, now seen corresponding path program 1 times [2021-11-25 20:24:16,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:16,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688682384] [2021-11-25 20:24:16,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:16,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:17,040 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2021-11-25 20:24:17,040 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:17,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688682384] [2021-11-25 20:24:17,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688682384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:17,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:17,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:24:17,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952964455] [2021-11-25 20:24:17,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:17,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:24:17,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:17,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:24:17,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:24:17,043 INFO L87 Difference]: Start difference. First operand 11994 states and 17473 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 20:24:18,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:18,176 INFO L93 Difference]: Finished difference Result 12000 states and 17478 transitions. [2021-11-25 20:24:18,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:24:18,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2021-11-25 20:24:18,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:18,232 INFO L225 Difference]: With dead ends: 12000 [2021-11-25 20:24:18,232 INFO L226 Difference]: Without dead ends: 11998 [2021-11-25 20:24:18,239 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 [2021-11-25 20:24:18,241 INFO L933 BasicCegarLoop]: 1554 mSDtfsCounter, 1735 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1749 SdHoareTripleChecker+Valid, 4646 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:18,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1749 Valid, 4646 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:24:18,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11998 states. [2021-11-25 20:24:19,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11998 to 11998. [2021-11-25 20:24:19,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11998 states, 6730 states have (on average 1.2796433878157503) internal successors, (8612), 7006 states have internal predecessors, (8612), 4420 states have call successors, (4420), 874 states have call predecessors, (4420), 845 states have return successors, (4444), 4210 states have call predecessors, (4444), 4416 states have call successors, (4444) [2021-11-25 20:24:19,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11998 states to 11998 states and 17476 transitions. [2021-11-25 20:24:19,260 INFO L78 Accepts]: Start accepts. Automaton has 11998 states and 17476 transitions. Word has length 133 [2021-11-25 20:24:19,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:19,261 INFO L470 AbstractCegarLoop]: Abstraction has 11998 states and 17476 transitions. [2021-11-25 20:24:19,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 20:24:19,262 INFO L276 IsEmpty]: Start isEmpty. Operand 11998 states and 17476 transitions. [2021-11-25 20:24:19,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-25 20:24:19,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:19,266 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:24:19,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:24:19,267 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)] === [2021-11-25 20:24:19,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:19,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1540103732, now seen corresponding path program 1 times [2021-11-25 20:24:19,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:19,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878959399] [2021-11-25 20:24:19,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:19,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2021-11-25 20:24:19,496 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:19,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878959399] [2021-11-25 20:24:19,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878959399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:19,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:19,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:24:19,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778908972] [2021-11-25 20:24:19,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:19,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:24:19,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:19,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:24:19,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:24:19,499 INFO L87 Difference]: Start difference. First operand 11998 states and 17476 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-25 20:24:20,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:20,624 INFO L93 Difference]: Finished difference Result 12004 states and 17481 transitions. [2021-11-25 20:24:20,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:24:20,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 138 [2021-11-25 20:24:20,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:20,685 INFO L225 Difference]: With dead ends: 12004 [2021-11-25 20:24:20,686 INFO L226 Difference]: Without dead ends: 12002 [2021-11-25 20:24:20,694 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 [2021-11-25 20:24:20,695 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1730 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 4649 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:20,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1743 Valid, 4649 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:24:20,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12002 states. [2021-11-25 20:24:21,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12002 to 12002. [2021-11-25 20:24:21,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12002 states, 6733 states have (on average 1.2795187880588148) internal successors, (8615), 7009 states have internal predecessors, (8615), 4420 states have call successors, (4420), 875 states have call predecessors, (4420), 846 states have return successors, (4444), 4210 states have call predecessors, (4444), 4416 states have call successors, (4444) [2021-11-25 20:24:21,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12002 states to 12002 states and 17479 transitions. [2021-11-25 20:24:21,766 INFO L78 Accepts]: Start accepts. Automaton has 12002 states and 17479 transitions. Word has length 138 [2021-11-25 20:24:21,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:21,766 INFO L470 AbstractCegarLoop]: Abstraction has 12002 states and 17479 transitions. [2021-11-25 20:24:21,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-25 20:24:21,767 INFO L276 IsEmpty]: Start isEmpty. Operand 12002 states and 17479 transitions. [2021-11-25 20:24:21,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-25 20:24:21,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:21,770 INFO L514 BasicCegarLoop]: trace histogram [9, 7, 7, 7, 7, 7, 7, 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] [2021-11-25 20:24:21,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:24:21,771 INFO L402 AbstractCegarLoop]: === Iteration 8 === 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)] === [2021-11-25 20:24:21,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:21,772 INFO L85 PathProgramCache]: Analyzing trace with hash -883809846, now seen corresponding path program 1 times [2021-11-25 20:24:21,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:21,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381669075] [2021-11-25 20:24:21,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:21,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:21,901 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2021-11-25 20:24:21,901 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:21,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381669075] [2021-11-25 20:24:21,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381669075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:21,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:21,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:24:21,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812486985] [2021-11-25 20:24:21,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:21,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:24:21,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:21,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:24:21,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:24:21,904 INFO L87 Difference]: Start difference. First operand 12002 states and 17479 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-25 20:24:23,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:23,533 INFO L93 Difference]: Finished difference Result 35084 states and 51145 transitions. [2021-11-25 20:24:23,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:24:23,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 142 [2021-11-25 20:24:23,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:23,641 INFO L225 Difference]: With dead ends: 35084 [2021-11-25 20:24:23,641 INFO L226 Difference]: Without dead ends: 23097 [2021-11-25 20:24:23,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:24:23,691 INFO L933 BasicCegarLoop]: 2195 mSDtfsCounter, 1743 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 3750 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:23,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1743 Valid, 3750 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:24:23,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23097 states. [2021-11-25 20:24:25,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23097 to 23029. [2021-11-25 20:24:25,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23029 states, 12925 states have (on average 1.281624758220503) internal successors, (16565), 13495 states have internal predecessors, (16565), 8480 states have call successors, (8480), 1678 states have call predecessors, (8480), 1621 states have return successors, (8532), 8039 states have call predecessors, (8532), 8476 states have call successors, (8532) [2021-11-25 20:24:25,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23029 states to 23029 states and 33577 transitions. [2021-11-25 20:24:25,334 INFO L78 Accepts]: Start accepts. Automaton has 23029 states and 33577 transitions. Word has length 142 [2021-11-25 20:24:25,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:25,335 INFO L470 AbstractCegarLoop]: Abstraction has 23029 states and 33577 transitions. [2021-11-25 20:24:25,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-25 20:24:25,335 INFO L276 IsEmpty]: Start isEmpty. Operand 23029 states and 33577 transitions. [2021-11-25 20:24:25,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-25 20:24:25,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:25,339 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 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] [2021-11-25 20:24:25,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:24:25,339 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:24:25,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:25,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1318087962, now seen corresponding path program 1 times [2021-11-25 20:24:25,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:25,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789001064] [2021-11-25 20:24:25,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:25,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-25 20:24:25,665 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:25,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789001064] [2021-11-25 20:24:25,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789001064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:25,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:25,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:24:25,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804833488] [2021-11-25 20:24:25,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:25,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:24:25,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:25,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:24:25,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:24:25,668 INFO L87 Difference]: Start difference. First operand 23029 states and 33577 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 20:24:27,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:27,318 INFO L93 Difference]: Finished difference Result 23035 states and 33582 transitions. [2021-11-25 20:24:27,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:24:27,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 143 [2021-11-25 20:24:27,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:27,413 INFO L225 Difference]: With dead ends: 23035 [2021-11-25 20:24:27,413 INFO L226 Difference]: Without dead ends: 23033 [2021-11-25 20:24:27,421 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 [2021-11-25 20:24:27,423 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1730 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1742 SdHoareTripleChecker+Valid, 4649 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:27,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1742 Valid, 4649 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:24:27,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23033 states. [2021-11-25 20:24:28,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23033 to 23033. [2021-11-25 20:24:29,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23033 states, 12928 states have (on average 1.2815594059405941) internal successors, (16568), 13498 states have internal predecessors, (16568), 8480 states have call successors, (8480), 1679 states have call predecessors, (8480), 1622 states have return successors, (8532), 8039 states have call predecessors, (8532), 8476 states have call successors, (8532) [2021-11-25 20:24:29,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23033 states to 23033 states and 33580 transitions. [2021-11-25 20:24:29,211 INFO L78 Accepts]: Start accepts. Automaton has 23033 states and 33580 transitions. Word has length 143 [2021-11-25 20:24:29,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:29,212 INFO L470 AbstractCegarLoop]: Abstraction has 23033 states and 33580 transitions. [2021-11-25 20:24:29,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 20:24:29,212 INFO L276 IsEmpty]: Start isEmpty. Operand 23033 states and 33580 transitions. [2021-11-25 20:24:29,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-25 20:24:29,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:29,216 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 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] [2021-11-25 20:24:29,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:24:29,216 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)] === [2021-11-25 20:24:29,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:29,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1552757858, now seen corresponding path program 1 times [2021-11-25 20:24:29,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:29,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814689489] [2021-11-25 20:24:29,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:29,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:29,395 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2021-11-25 20:24:29,395 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:29,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814689489] [2021-11-25 20:24:29,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814689489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:29,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:29,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:24:29,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021459558] [2021-11-25 20:24:29,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:29,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:24:29,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:29,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:24:29,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:24:29,398 INFO L87 Difference]: Start difference. First operand 23033 states and 33580 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 20:24:31,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:31,041 INFO L93 Difference]: Finished difference Result 23039 states and 33585 transitions. [2021-11-25 20:24:31,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:24:31,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 152 [2021-11-25 20:24:31,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:31,140 INFO L225 Difference]: With dead ends: 23039 [2021-11-25 20:24:31,140 INFO L226 Difference]: Without dead ends: 23037 [2021-11-25 20:24:31,150 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 [2021-11-25 20:24:31,150 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1729 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 4649 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:31,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1740 Valid, 4649 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:24:31,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23037 states. [2021-11-25 20:24:32,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23037 to 23037. [2021-11-25 20:24:32,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23037 states, 12931 states have (on average 1.281494083984224) internal successors, (16571), 13501 states have internal predecessors, (16571), 8480 states have call successors, (8480), 1680 states have call predecessors, (8480), 1623 states have return successors, (8532), 8039 states have call predecessors, (8532), 8476 states have call successors, (8532) [2021-11-25 20:24:32,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23037 states to 23037 states and 33583 transitions. [2021-11-25 20:24:32,888 INFO L78 Accepts]: Start accepts. Automaton has 23037 states and 33583 transitions. Word has length 152 [2021-11-25 20:24:32,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:32,890 INFO L470 AbstractCegarLoop]: Abstraction has 23037 states and 33583 transitions. [2021-11-25 20:24:32,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 20:24:32,890 INFO L276 IsEmpty]: Start isEmpty. Operand 23037 states and 33583 transitions. [2021-11-25 20:24:32,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-25 20:24:32,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:32,918 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 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] [2021-11-25 20:24:32,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:24:32,920 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:24:32,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:32,921 INFO L85 PathProgramCache]: Analyzing trace with hash -189116576, now seen corresponding path program 1 times [2021-11-25 20:24:32,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:32,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030336739] [2021-11-25 20:24:32,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:32,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:33,052 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-11-25 20:24:33,052 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:33,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030336739] [2021-11-25 20:24:33,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030336739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:33,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:33,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:24:33,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85140087] [2021-11-25 20:24:33,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:33,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:24:33,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:33,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:24:33,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:24:33,055 INFO L87 Difference]: Start difference. First operand 23037 states and 33583 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 20:24:35,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:35,035 INFO L93 Difference]: Finished difference Result 53869 states and 78585 transitions. [2021-11-25 20:24:35,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:24:35,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 148 [2021-11-25 20:24:35,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:35,198 INFO L225 Difference]: With dead ends: 53869 [2021-11-25 20:24:35,198 INFO L226 Difference]: Without dead ends: 30893 [2021-11-25 20:24:35,275 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 [2021-11-25 20:24:35,276 INFO L933 BasicCegarLoop]: 2286 mSDtfsCounter, 1231 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 3796 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:35,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1231 Valid, 3796 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:24:35,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30893 states. [2021-11-25 20:24:37,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30893 to 30819. [2021-11-25 20:24:37,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30819 states, 17393 states have (on average 1.2822974759960903) internal successors, (22303), 18195 states have internal predecessors, (22303), 11200 states have call successors, (11200), 2296 states have call predecessors, (11200), 2223 states have return successors, (11252), 10579 states have call predecessors, (11252), 11196 states have call successors, (11252) [2021-11-25 20:24:37,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30819 states to 30819 states and 44755 transitions. [2021-11-25 20:24:37,243 INFO L78 Accepts]: Start accepts. Automaton has 30819 states and 44755 transitions. Word has length 148 [2021-11-25 20:24:37,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:37,243 INFO L470 AbstractCegarLoop]: Abstraction has 30819 states and 44755 transitions. [2021-11-25 20:24:37,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 20:24:37,244 INFO L276 IsEmpty]: Start isEmpty. Operand 30819 states and 44755 transitions. [2021-11-25 20:24:37,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-25 20:24:37,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:37,247 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 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] [2021-11-25 20:24:37,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 20:24:37,247 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)] === [2021-11-25 20:24:37,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:37,248 INFO L85 PathProgramCache]: Analyzing trace with hash 2009477932, now seen corresponding path program 1 times [2021-11-25 20:24:37,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:37,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977013186] [2021-11-25 20:24:37,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:37,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:37,389 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2021-11-25 20:24:37,389 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:37,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977013186] [2021-11-25 20:24:37,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977013186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:37,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:37,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:24:37,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564100046] [2021-11-25 20:24:37,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:37,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:24:37,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:37,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:24:37,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:24:37,392 INFO L87 Difference]: Start difference. First operand 30819 states and 44755 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 20:24:39,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:39,198 INFO L93 Difference]: Finished difference Result 30825 states and 44760 transitions. [2021-11-25 20:24:39,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:24:39,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 157 [2021-11-25 20:24:39,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:39,289 INFO L225 Difference]: With dead ends: 30825 [2021-11-25 20:24:39,289 INFO L226 Difference]: Without dead ends: 30823 [2021-11-25 20:24:39,298 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 [2021-11-25 20:24:39,299 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1729 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 4649 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:39,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1739 Valid, 4649 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:24:39,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30823 states. [2021-11-25 20:24:40,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30823 to 30823. [2021-11-25 20:24:40,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30823 states, 17396 states have (on average 1.282248792825937) internal successors, (22306), 18198 states have internal predecessors, (22306), 11200 states have call successors, (11200), 2297 states have call predecessors, (11200), 2224 states have return successors, (11252), 10579 states have call predecessors, (11252), 11196 states have call successors, (11252) [2021-11-25 20:24:40,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30823 states to 30823 states and 44758 transitions. [2021-11-25 20:24:40,947 INFO L78 Accepts]: Start accepts. Automaton has 30823 states and 44758 transitions. Word has length 157 [2021-11-25 20:24:40,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:40,948 INFO L470 AbstractCegarLoop]: Abstraction has 30823 states and 44758 transitions. [2021-11-25 20:24:40,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 20:24:40,948 INFO L276 IsEmpty]: Start isEmpty. Operand 30823 states and 44758 transitions. [2021-11-25 20:24:40,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-25 20:24:40,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:40,950 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:24:40,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 20:24:40,951 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)] === [2021-11-25 20:24:40,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:40,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1733032546, now seen corresponding path program 1 times [2021-11-25 20:24:40,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:40,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562362286] [2021-11-25 20:24:40,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:40,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:41,304 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-25 20:24:41,304 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:41,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562362286] [2021-11-25 20:24:41,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562362286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:41,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:41,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:24:41,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764556264] [2021-11-25 20:24:41,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:41,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:24:41,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:41,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:24:41,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:24:41,308 INFO L87 Difference]: Start difference. First operand 30823 states and 44758 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:24:43,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:43,040 INFO L93 Difference]: Finished difference Result 30829 states and 44763 transitions. [2021-11-25 20:24:43,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:24:43,041 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 162 [2021-11-25 20:24:43,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:43,128 INFO L225 Difference]: With dead ends: 30829 [2021-11-25 20:24:43,129 INFO L226 Difference]: Without dead ends: 30827 [2021-11-25 20:24:43,140 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 [2021-11-25 20:24:43,141 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1729 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1738 SdHoareTripleChecker+Valid, 4649 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:43,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1738 Valid, 4649 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:24:43,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30827 states. [2021-11-25 20:24:44,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30827 to 30827. [2021-11-25 20:24:44,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30827 states, 17399 states have (on average 1.2822001264440486) internal successors, (22309), 18201 states have internal predecessors, (22309), 11200 states have call successors, (11200), 2298 states have call predecessors, (11200), 2225 states have return successors, (11252), 10579 states have call predecessors, (11252), 11196 states have call successors, (11252) [2021-11-25 20:24:44,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30827 states to 30827 states and 44761 transitions. [2021-11-25 20:24:44,940 INFO L78 Accepts]: Start accepts. Automaton has 30827 states and 44761 transitions. Word has length 162 [2021-11-25 20:24:44,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:44,941 INFO L470 AbstractCegarLoop]: Abstraction has 30827 states and 44761 transitions. [2021-11-25 20:24:44,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:24:44,941 INFO L276 IsEmpty]: Start isEmpty. Operand 30827 states and 44761 transitions. [2021-11-25 20:24:44,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-25 20:24:44,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:44,945 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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] [2021-11-25 20:24:44,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 20:24:44,945 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)] === [2021-11-25 20:24:44,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:44,946 INFO L85 PathProgramCache]: Analyzing trace with hash 69266714, now seen corresponding path program 1 times [2021-11-25 20:24:44,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:44,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755635720] [2021-11-25 20:24:44,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:44,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:45,117 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2021-11-25 20:24:45,118 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:45,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755635720] [2021-11-25 20:24:45,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755635720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:45,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:45,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:24:45,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040260755] [2021-11-25 20:24:45,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:45,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:24:45,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:45,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:24:45,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:24:45,121 INFO L87 Difference]: Start difference. First operand 30827 states and 44761 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 20:24:47,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:47,026 INFO L93 Difference]: Finished difference Result 30833 states and 44766 transitions. [2021-11-25 20:24:47,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:24:47,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 163 [2021-11-25 20:24:47,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:47,127 INFO L225 Difference]: With dead ends: 30833 [2021-11-25 20:24:47,127 INFO L226 Difference]: Without dead ends: 30831 [2021-11-25 20:24:47,140 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 [2021-11-25 20:24:47,140 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1730 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1738 SdHoareTripleChecker+Valid, 4649 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:47,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1738 Valid, 4649 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:24:47,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30831 states. [2021-11-25 20:24:48,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30831 to 30831. [2021-11-25 20:24:48,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30831 states, 17402 states have (on average 1.2821514768417424) internal successors, (22312), 18204 states have internal predecessors, (22312), 11200 states have call successors, (11200), 2299 states have call predecessors, (11200), 2226 states have return successors, (11252), 10579 states have call predecessors, (11252), 11196 states have call successors, (11252) [2021-11-25 20:24:48,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30831 states to 30831 states and 44764 transitions. [2021-11-25 20:24:48,820 INFO L78 Accepts]: Start accepts. Automaton has 30831 states and 44764 transitions. Word has length 163 [2021-11-25 20:24:48,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:48,821 INFO L470 AbstractCegarLoop]: Abstraction has 30831 states and 44764 transitions. [2021-11-25 20:24:48,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 20:24:48,822 INFO L276 IsEmpty]: Start isEmpty. Operand 30831 states and 44764 transitions. [2021-11-25 20:24:48,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-25 20:24:48,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:48,825 INFO L514 BasicCegarLoop]: trace histogram [11, 8, 7, 7, 7, 7, 7, 7, 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] [2021-11-25 20:24:48,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 20:24:48,826 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:24:48,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:48,826 INFO L85 PathProgramCache]: Analyzing trace with hash -775750610, now seen corresponding path program 1 times [2021-11-25 20:24:48,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:48,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876666139] [2021-11-25 20:24:48,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:48,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2021-11-25 20:24:49,171 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:49,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876666139] [2021-11-25 20:24:49,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876666139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:49,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:49,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:24:49,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144967589] [2021-11-25 20:24:49,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:49,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:24:49,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:49,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:24:49,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:24:49,174 INFO L87 Difference]: Start difference. First operand 30831 states and 44764 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 20:24:51,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:51,444 INFO L93 Difference]: Finished difference Result 33445 states and 47487 transitions. [2021-11-25 20:24:51,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:24:51,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 171 [2021-11-25 20:24:51,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:51,533 INFO L225 Difference]: With dead ends: 33445 [2021-11-25 20:24:51,533 INFO L226 Difference]: Without dead ends: 33443 [2021-11-25 20:24:51,546 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 [2021-11-25 20:24:51,547 INFO L933 BasicCegarLoop]: 1650 mSDtfsCounter, 1071 mSDsluCounter, 4601 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 5673 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:51,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1078 Valid, 5673 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:24:51,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33443 states. [2021-11-25 20:24:53,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33443 to 33443. [2021-11-25 20:24:53,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33443 states, 18759 states have (on average 1.2681379604456529) internal successors, (23789), 19589 states have internal predecessors, (23789), 11822 states have call successors, (11822), 2932 states have call predecessors, (11822), 2859 states have return successors, (11874), 11201 states have call predecessors, (11874), 11818 states have call successors, (11874) [2021-11-25 20:24:53,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33443 states to 33443 states and 47485 transitions. [2021-11-25 20:24:53,513 INFO L78 Accepts]: Start accepts. Automaton has 33443 states and 47485 transitions. Word has length 171 [2021-11-25 20:24:53,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:53,514 INFO L470 AbstractCegarLoop]: Abstraction has 33443 states and 47485 transitions. [2021-11-25 20:24:53,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 20:24:53,514 INFO L276 IsEmpty]: Start isEmpty. Operand 33443 states and 47485 transitions. [2021-11-25 20:24:53,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-25 20:24:53,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:53,519 INFO L514 BasicCegarLoop]: trace histogram [11, 9, 8, 8, 7, 7, 7, 7, 7, 7, 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] [2021-11-25 20:24:53,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 20:24:53,519 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)] === [2021-11-25 20:24:53,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:53,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1952140006, now seen corresponding path program 1 times [2021-11-25 20:24:53,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:53,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282119231] [2021-11-25 20:24:53,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:53,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2021-11-25 20:24:53,693 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:53,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282119231] [2021-11-25 20:24:53,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282119231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:53,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:53,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:24:53,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642411706] [2021-11-25 20:24:53,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:53,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:24:53,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:53,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:24:53,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:24:53,698 INFO L87 Difference]: Start difference. First operand 33443 states and 47485 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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) [2021-11-25 20:24:55,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:55,620 INFO L93 Difference]: Finished difference Result 33449 states and 47490 transitions. [2021-11-25 20:24:55,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:24:55,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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 173 [2021-11-25 20:24:55,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:55,709 INFO L225 Difference]: With dead ends: 33449 [2021-11-25 20:24:55,710 INFO L226 Difference]: Without dead ends: 33447 [2021-11-25 20:24:55,722 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 [2021-11-25 20:24:55,723 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1730 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 4649 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:55,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1736 Valid, 4649 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:24:55,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33447 states. [2021-11-25 20:24:57,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33447 to 33447. [2021-11-25 20:24:57,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33447 states, 18762 states have (on average 1.2680950858117472) internal successors, (23792), 19592 states have internal predecessors, (23792), 11822 states have call successors, (11822), 2933 states have call predecessors, (11822), 2860 states have return successors, (11874), 11201 states have call predecessors, (11874), 11818 states have call successors, (11874) [2021-11-25 20:24:57,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33447 states to 33447 states and 47488 transitions. [2021-11-25 20:24:57,704 INFO L78 Accepts]: Start accepts. Automaton has 33447 states and 47488 transitions. Word has length 173 [2021-11-25 20:24:57,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:57,705 INFO L470 AbstractCegarLoop]: Abstraction has 33447 states and 47488 transitions. [2021-11-25 20:24:57,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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) [2021-11-25 20:24:57,706 INFO L276 IsEmpty]: Start isEmpty. Operand 33447 states and 47488 transitions. [2021-11-25 20:24:57,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-25 20:24:57,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:57,711 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 9, 9, 7, 7, 7, 7, 7, 7, 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] [2021-11-25 20:24:57,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 20:24:57,712 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)] === [2021-11-25 20:24:57,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:57,712 INFO L85 PathProgramCache]: Analyzing trace with hash -974398412, now seen corresponding path program 1 times [2021-11-25 20:24:57,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:57,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209074717] [2021-11-25 20:24:57,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:57,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:57,892 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2021-11-25 20:24:57,892 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:57,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209074717] [2021-11-25 20:24:57,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209074717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:57,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:57,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:24:57,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472538609] [2021-11-25 20:24:57,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:57,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:24:57,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:57,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:24:57,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:24:57,895 INFO L87 Difference]: Start difference. First operand 33447 states and 47488 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 20:24:59,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:59,932 INFO L93 Difference]: Finished difference Result 33453 states and 47493 transitions. [2021-11-25 20:24:59,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:24:59,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 178 [2021-11-25 20:24:59,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:25:00,022 INFO L225 Difference]: With dead ends: 33453 [2021-11-25 20:25:00,022 INFO L226 Difference]: Without dead ends: 33451 [2021-11-25 20:25:00,034 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 [2021-11-25 20:25:00,035 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1730 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 4649 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:25:00,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1735 Valid, 4649 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:25:00,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33451 states.