./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade5d956-1d08-45db-9448-1136e6ec9864/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade5d956-1d08-45db-9448-1136e6ec9864/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade5d956-1d08-45db-9448-1136e6ec9864/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade5d956-1d08-45db-9448-1136e6ec9864/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade5d956-1d08-45db-9448-1136e6ec9864/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade5d956-1d08-45db-9448-1136e6ec9864/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 435b3fa8073a80dcd9b8b69819909b6031007c35574ec244127e6237bed3be57 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:12:46,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:12:46,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:12:46,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:12:46,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:12:46,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:12:46,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:12:46,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:12:46,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:12:46,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:12:46,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:12:46,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:12:46,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:12:46,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:12:46,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:12:46,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:12:46,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:12:46,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:12:46,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:12:46,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:12:46,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:12:46,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:12:46,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:12:46,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:12:46,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:12:46,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:12:46,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:12:46,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:12:46,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:12:46,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:12:46,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:12:46,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:12:46,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:12:46,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:12:46,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:12:46,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:12:46,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:12:46,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:12:46,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:12:46,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:12:46,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:12:46,959 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade5d956-1d08-45db-9448-1136e6ec9864/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:12:47,009 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:12:47,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:12:47,010 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:12:47,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:12:47,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:12:47,018 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:12:47,018 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:12:47,019 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:12:47,019 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:12:47,019 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:12:47,020 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:12:47,021 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:12:47,021 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:12:47,021 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:12:47,021 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:12:47,022 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:12:47,022 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:12:47,022 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:12:47,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:12:47,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:12:47,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:12:47,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:12:47,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:12:47,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:12:47,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:12:47,025 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:12:47,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:12:47,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:12:47,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:12:47,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:12:47,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:12:47,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:12:47,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:12:47,028 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:12:47,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:12:47,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:12:47,029 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:12:47,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:12:47,030 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_ade5d956-1d08-45db-9448-1136e6ec9864/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade5d956-1d08-45db-9448-1136e6ec9864/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 435b3fa8073a80dcd9b8b69819909b6031007c35574ec244127e6237bed3be57 [2021-11-23 03:12:47,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:12:47,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:12:47,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:12:47,404 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:12:47,405 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:12:47,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade5d956-1d08-45db-9448-1136e6ec9864/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-23 03:12:47,525 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade5d956-1d08-45db-9448-1136e6ec9864/bin/utaipan-EQgc7hIp5V/data/faede8d9e/a98f85da4204493ea653009501daebba/FLAG0cf28c48e [2021-11-23 03:12:48,825 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:12:48,827 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade5d956-1d08-45db-9448-1136e6ec9864/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-23 03:12:48,935 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade5d956-1d08-45db-9448-1136e6ec9864/bin/utaipan-EQgc7hIp5V/data/faede8d9e/a98f85da4204493ea653009501daebba/FLAG0cf28c48e [2021-11-23 03:12:49,427 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade5d956-1d08-45db-9448-1136e6ec9864/bin/utaipan-EQgc7hIp5V/data/faede8d9e/a98f85da4204493ea653009501daebba [2021-11-23 03:12:49,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:12:49,435 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:12:49,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:12:49,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:12:49,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:12:49,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:12:49" (1/1) ... [2021-11-23 03:12:49,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d7dba55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:49, skipping insertion in model container [2021-11-23 03:12:49,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:12:49" (1/1) ... [2021-11-23 03:12:49,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:12:49,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:12:54,936 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_ade5d956-1d08-45db-9448-1136e6ec9864/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491234,491247] [2021-11-23 03:12:54,939 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_ade5d956-1d08-45db-9448-1136e6ec9864/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491403,491416] [2021-11-23 03:12:54,940 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_ade5d956-1d08-45db-9448-1136e6ec9864/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491570,491583] [2021-11-23 03:12:54,940 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_ade5d956-1d08-45db-9448-1136e6ec9864/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491738,491751] [2021-11-23 03:12:54,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:12:55,023 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:12:55,675 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_ade5d956-1d08-45db-9448-1136e6ec9864/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491234,491247] [2021-11-23 03:12:55,675 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_ade5d956-1d08-45db-9448-1136e6ec9864/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491403,491416] [2021-11-23 03:12:55,676 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_ade5d956-1d08-45db-9448-1136e6ec9864/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491570,491583] [2021-11-23 03:12:55,676 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_ade5d956-1d08-45db-9448-1136e6ec9864/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491738,491751] [2021-11-23 03:12:55,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:12:56,053 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:12:56,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:56 WrapperNode [2021-11-23 03:12:56,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:12:56,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:12:56,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:12:56,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:12:56,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:56" (1/1) ... [2021-11-23 03:12:56,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:56" (1/1) ... [2021-11-23 03:12:56,684 INFO L137 Inliner]: procedures = 567, calls = 5326, calls flagged for inlining = 289, calls inlined = 261, statements flattened = 11363 [2021-11-23 03:12:56,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:12:56,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:12:56,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:12:56,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:12:56,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:56" (1/1) ... [2021-11-23 03:12:56,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:56" (1/1) ... [2021-11-23 03:12:56,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:56" (1/1) ... [2021-11-23 03:12:56,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:56" (1/1) ... [2021-11-23 03:12:57,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:56" (1/1) ... [2021-11-23 03:12:57,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:56" (1/1) ... [2021-11-23 03:12:57,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:56" (1/1) ... [2021-11-23 03:12:57,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:12:57,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:12:57,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:12:57,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:12:57,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:56" (1/1) ... [2021-11-23 03:12:57,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:12:57,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade5d956-1d08-45db-9448-1136e6ec9864/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:12:57,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade5d956-1d08-45db-9448-1136e6ec9864/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:12:57,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade5d956-1d08-45db-9448-1136e6ec9864/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:12:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_up [2021-11-23 03:12:57,627 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_up [2021-11-23 03:12:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_media_task [2021-11-23 03:12:57,628 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_media_task [2021-11-23 03:12:57,628 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-23 03:12:57,628 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-23 03:12:57,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 03:12:57,628 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 03:12:57,628 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-23 03:12:57,629 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-23 03:12:57,629 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-23 03:12:57,629 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-23 03:12:57,629 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_select_media [2021-11-23 03:12:57,629 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_select_media [2021-11-23 03:12:57,629 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit_le [2021-11-23 03:12:57,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit_le [2021-11-23 03:12:57,630 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:12:57,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:12:57,630 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 03:12:57,630 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 03:12:57,630 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 03:12:57,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 03:12:57,631 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 03:12:57,631 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 03:12:57,631 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-23 03:12:57,631 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-23 03:12:57,631 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-23 03:12:57,632 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-23 03:12:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-23 03:12:57,632 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-23 03:12:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2021-11-23 03:12:57,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2021-11-23 03:12:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-23 03:12:57,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-23 03:12:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-23 03:12:57,633 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-23 03:12:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2021-11-23 03:12:57,633 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2021-11-23 03:12:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 03:12:57,634 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 03:12:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-23 03:12:57,634 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-23 03:12:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 03:12:57,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 03:12:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_do_nway [2021-11-23 03:12:57,635 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_do_nway [2021-11-23 03:12:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-23 03:12:57,635 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-23 03:12:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-23 03:12:57,635 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-23 03:12:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-23 03:12:57,636 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-23 03:12:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 03:12:57,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 03:12:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 03:12:57,636 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 03:12:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-23 03:12:57,637 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-23 03:12:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:12:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_wolopts [2021-11-23 03:12:57,637 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_wolopts [2021-11-23 03:12:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_61 [2021-11-23 03:12:57,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_61 [2021-11-23 03:12:57,638 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_resume [2021-11-23 03:12:57,638 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_resume [2021-11-23 03:12:57,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-23 03:12:57,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-23 03:12:57,638 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_interrupt [2021-11-23 03:12:57,639 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_interrupt [2021-11-23 03:12:57,639 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 03:12:57,639 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 03:12:57,639 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___3 [2021-11-23 03:12:57,639 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___3 [2021-11-23 03:12:57,639 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___1 [2021-11-23 03:12:57,640 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___1 [2021-11-23 03:12:57,640 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_media_task [2021-11-23 03:12:57,640 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_media_task [2021-11-23 03:12:57,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:12:57,640 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___5 [2021-11-23 03:12:57,640 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___5 [2021-11-23 03:12:57,641 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___4 [2021-11-23 03:12:57,641 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___4 [2021-11-23 03:12:57,641 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 03:12:57,641 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 03:12:57,641 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-23 03:12:57,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-23 03:12:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:12:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 03:12:57,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 03:12:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:12:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-23 03:12:57,642 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-23 03:12:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 03:12:57,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 03:12:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 03:12:57,643 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 03:12:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-23 03:12:57,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-23 03:12:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 03:12:57,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 03:12:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 03:12:57,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 03:12:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_timer [2021-11-23 03:12:57,644 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_timer [2021-11-23 03:12:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-23 03:12:57,645 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-23 03:12:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 03:12:57,645 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 03:12:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure poll_tulip [2021-11-23 03:12:57,645 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_tulip [2021-11-23 03:12:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_write [2021-11-23 03:12:57,646 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_write [2021-11-23 03:12:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 03:12:57,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 03:12:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:12:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-23 03:12:57,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-23 03:12:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 03:12:57,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 03:12:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-23 03:12:57,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-23 03:12:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-23 03:12:57,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-23 03:12:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:12:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 03:12:57,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 03:12:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 03:12:57,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 03:12:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:12:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_start_nway [2021-11-23 03:12:57,649 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_start_nway [2021-11-23 03:12:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-23 03:12:57,649 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-23 03:12:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-23 03:12:57,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-23 03:12:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:12:57,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:12:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_tulip_private [2021-11-23 03:12:57,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_tulip_private [2021-11-23 03:12:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-23 03:12:57,650 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-23 03:12:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-23 03:12:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-23 03:12:57,651 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 03:12:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 03:12:57,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-23 03:12:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-23 03:12:57,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mii_lock_of_tulip_private [2021-11-23 03:12:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mii_lock_of_tulip_private [2021-11-23 03:12:57,652 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 03:12:57,652 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 03:12:57,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_tulip_private [2021-11-23 03:12:57,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_tulip_private [2021-11-23 03:12:57,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:12:57,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:12:57,653 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_close [2021-11-23 03:12:57,653 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_close [2021-11-23 03:12:57,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:12:57,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:12:57,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 03:12:57,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 03:12:57,653 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-11-23 03:12:57,654 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-11-23 03:12:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 03:12:57,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 03:12:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-23 03:12:57,654 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-23 03:12:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_power_state [2021-11-23 03:12:57,654 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_power_state [2021-11-23 03:12:57,655 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-23 03:12:57,655 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-23 03:12:57,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2021-11-23 03:12:57,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2021-11-23 03:12:57,655 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2021-11-23 03:12:57,655 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2021-11-23 03:12:57,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-23 03:12:57,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-23 03:12:57,656 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_tx_timeout [2021-11-23 03:12:57,656 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_tx_timeout [2021-11-23 03:12:57,656 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_check_duplex [2021-11-23 03:12:57,656 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_check_duplex [2021-11-23 03:12:57,656 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-23 03:12:57,657 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-23 03:12:57,657 INFO L130 BoogieDeclarations]: Found specification of procedure bitrev32 [2021-11-23 03:12:57,657 INFO L138 BoogieDeclarations]: Found implementation of procedure bitrev32 [2021-11-23 03:12:57,657 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2021-11-23 03:12:57,657 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2021-11-23 03:12:57,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 03:12:57,657 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 03:12:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-23 03:12:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-23 03:12:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure comet_timer [2021-11-23 03:12:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure comet_timer [2021-11-23 03:12:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2021-11-23 03:12:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2021-11-23 03:12:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-23 03:12:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-23 03:12:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:12:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_read [2021-11-23 03:12:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_read [2021-11-23 03:12:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-23 03:12:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-23 03:12:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:12:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-23 03:12:57,660 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-23 03:12:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-23 03:12:57,660 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-23 03:12:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2021-11-23 03:12:57,660 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2021-11-23 03:12:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:12:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_down [2021-11-23 03:12:57,661 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_down [2021-11-23 03:12:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_stop_rxtx___2 [2021-11-23 03:12:57,661 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_stop_rxtx___2 [2021-11-23 03:12:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_remove_one [2021-11-23 03:12:57,661 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_remove_one [2021-11-23 03:12:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 03:12:57,662 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 03:12:57,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-23 03:12:57,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-23 03:12:57,662 INFO L130 BoogieDeclarations]: Found specification of procedure mxic_timer [2021-11-23 03:12:57,662 INFO L138 BoogieDeclarations]: Found implementation of procedure mxic_timer [2021-11-23 03:12:57,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 03:12:57,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 03:12:57,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-23 03:12:57,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-23 03:12:57,663 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_free_ring [2021-11-23 03:12:57,663 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_free_ring [2021-11-23 03:12:57,663 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-23 03:12:57,664 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-23 03:12:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_refill_rx [2021-11-23 03:12:57,664 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_refill_rx [2021-11-23 03:12:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_timer [2021-11-23 03:12:57,664 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_timer [2021-11-23 03:12:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-23 03:12:57,665 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-23 03:12:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-23 03:12:57,665 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-23 03:12:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-23 03:12:57,665 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-23 03:12:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_62 [2021-11-23 03:12:57,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_62 [2021-11-23 03:12:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 03:12:57,666 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 03:12:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 03:12:57,666 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 03:12:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:12:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx [2021-11-23 03:12:57,666 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx [2021-11-23 03:12:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:12:57,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:12:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61___0 [2021-11-23 03:12:57,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61___0 [2021-11-23 03:12:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2021-11-23 03:12:57,667 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2021-11-23 03:12:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_start_rxtx [2021-11-23 03:12:57,668 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_start_rxtx [2021-11-23 03:12:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-23 03:12:57,668 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-23 03:12:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_open [2021-11-23 03:12:57,668 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_open [2021-11-23 03:12:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-23 03:12:57,669 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-23 03:12:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 03:12:57,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 03:12:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-23 03:12:57,669 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-23 03:12:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-23 03:12:57,669 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-23 03:12:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-23 03:12:57,670 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-23 03:12:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_start_nway [2021-11-23 03:12:57,670 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_start_nway [2021-11-23 03:12:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-23 03:12:57,670 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-23 03:12:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_read_eeprom [2021-11-23 03:12:57,671 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_read_eeprom [2021-11-23 03:12:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:12:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_timer [2021-11-23 03:12:57,671 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_timer [2021-11-23 03:12:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 03:12:57,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 03:12:58,842 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:12:58,851 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:13:00,226 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 03:13:09,929 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 03:13:10,214 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:13:13,911 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:13:13,911 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 03:13:13,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:13:13 BoogieIcfgContainer [2021-11-23 03:13:13,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:13:13,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:13:13,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:13:13,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:13:13,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:12:49" (1/3) ... [2021-11-23 03:13:13,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651979f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:13:13, skipping insertion in model container [2021-11-23 03:13:13,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:56" (2/3) ... [2021-11-23 03:13:13,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651979f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:13:13, skipping insertion in model container [2021-11-23 03:13:13,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:13:13" (3/3) ... [2021-11-23 03:13:13,930 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-23 03:13:13,937 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:13:13,937 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-23 03:13:14,039 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:13:14,058 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:13:14,064 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 03:13:14,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 2632 states, 1547 states have (on average 1.3529411764705883) internal successors, (2093), 1648 states have internal predecessors, (2093), 951 states have call successors, (951), 133 states have call predecessors, (951), 132 states have return successors, (944), 899 states have call predecessors, (944), 944 states have call successors, (944) [2021-11-23 03:13:14,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 03:13:14,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:13:14,260 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:13:14,260 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:13:14,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:13:14,267 INFO L85 PathProgramCache]: Analyzing trace with hash 425106636, now seen corresponding path program 1 times [2021-11-23 03:13:14,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:13:14,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306924579] [2021-11-23 03:13:14,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:13:14,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:13:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:13:15,432 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-23 03:13:15,433 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:13:15,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306924579] [2021-11-23 03:13:15,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306924579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:13:15,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:13:15,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:13:15,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305519857] [2021-11-23 03:13:15,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:13:15,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:13:15,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:13:15,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:13:15,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:13:15,490 INFO L87 Difference]: Start difference. First operand has 2632 states, 1547 states have (on average 1.3529411764705883) internal successors, (2093), 1648 states have internal predecessors, (2093), 951 states have call successors, (951), 133 states have call predecessors, (951), 132 states have return successors, (944), 899 states have call predecessors, (944), 944 states have call successors, (944) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 03:13:21,845 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:13:22,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:13:22,889 INFO L93 Difference]: Finished difference Result 7601 states and 11697 transitions. [2021-11-23 03:13:22,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:13:22,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 151 [2021-11-23 03:13:22,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:13:22,976 INFO L225 Difference]: With dead ends: 7601 [2021-11-23 03:13:22,976 INFO L226 Difference]: Without dead ends: 4985 [2021-11-23 03:13:23,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:13:23,023 INFO L933 BasicCegarLoop]: 4397 mSDtfsCounter, 3591 mSDsluCounter, 3928 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3591 SdHoareTripleChecker+Valid, 7903 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:13:23,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3591 Valid, 7903 Invalid, 893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 885 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-11-23 03:13:23,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4985 states. [2021-11-23 03:13:23,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4985 to 4970. [2021-11-23 03:13:23,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4970 states, 2925 states have (on average 1.3442735042735043) internal successors, (3932), 3114 states have internal predecessors, (3932), 1785 states have call successors, (1785), 258 states have call predecessors, (1785), 257 states have return successors, (1781), 1696 states have call predecessors, (1781), 1781 states have call successors, (1781) [2021-11-23 03:13:23,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4970 states to 4970 states and 7498 transitions. [2021-11-23 03:13:23,921 INFO L78 Accepts]: Start accepts. Automaton has 4970 states and 7498 transitions. Word has length 151 [2021-11-23 03:13:23,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:13:23,923 INFO L470 AbstractCegarLoop]: Abstraction has 4970 states and 7498 transitions. [2021-11-23 03:13:23,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 03:13:23,924 INFO L276 IsEmpty]: Start isEmpty. Operand 4970 states and 7498 transitions. [2021-11-23 03:13:23,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-23 03:13:23,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:13:23,935 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:13:23,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:13:23,936 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:13:23,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:13:23,937 INFO L85 PathProgramCache]: Analyzing trace with hash 311107550, now seen corresponding path program 1 times [2021-11-23 03:13:23,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:13:23,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120664811] [2021-11-23 03:13:23,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:13:23,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:13:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:13:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-23 03:13:24,388 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:13:24,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120664811] [2021-11-23 03:13:24,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120664811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:13:24,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:13:24,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:13:24,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717561453] [2021-11-23 03:13:24,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:13:24,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:13:24,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:13:24,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:13:24,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:13:24,394 INFO L87 Difference]: Start difference. First operand 4970 states and 7498 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 03:13:31,119 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:13:31,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:13:31,690 INFO L93 Difference]: Finished difference Result 11024 states and 16652 transitions. [2021-11-23 03:13:31,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:13:31,692 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 159 [2021-11-23 03:13:31,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:13:31,771 INFO L225 Difference]: With dead ends: 11024 [2021-11-23 03:13:31,771 INFO L226 Difference]: Without dead ends: 6081 [2021-11-23 03:13:31,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:13:31,814 INFO L933 BasicCegarLoop]: 4133 mSDtfsCounter, 2643 mSDsluCounter, 3900 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2643 SdHoareTripleChecker+Valid, 7615 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:13:31,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2643 Valid, 7615 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 914 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-11-23 03:13:31,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6081 states. [2021-11-23 03:13:32,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6081 to 6055. [2021-11-23 03:13:32,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6055 states, 3615 states have (on average 1.3502074688796681) internal successors, (4881), 3833 states have internal predecessors, (4881), 2126 states have call successors, (2126), 313 states have call predecessors, (2126), 311 states have return successors, (2122), 2022 states have call predecessors, (2122), 2122 states have call successors, (2122) [2021-11-23 03:13:32,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6055 states to 6055 states and 9129 transitions. [2021-11-23 03:13:32,431 INFO L78 Accepts]: Start accepts. Automaton has 6055 states and 9129 transitions. Word has length 159 [2021-11-23 03:13:32,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:13:32,432 INFO L470 AbstractCegarLoop]: Abstraction has 6055 states and 9129 transitions. [2021-11-23 03:13:32,434 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 03:13:32,434 INFO L276 IsEmpty]: Start isEmpty. Operand 6055 states and 9129 transitions. [2021-11-23 03:13:32,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-23 03:13:32,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:13:32,443 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:13:32,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:13:32,443 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:13:32,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:13:32,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1999472241, now seen corresponding path program 1 times [2021-11-23 03:13:32,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:13:32,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073179684] [2021-11-23 03:13:32,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:13:32,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:13:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:13:32,940 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-23 03:13:32,941 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:13:32,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073179684] [2021-11-23 03:13:32,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073179684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:13:32,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:13:32,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:13:32,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971276029] [2021-11-23 03:13:32,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:13:32,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:13:32,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:13:32,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:13:32,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:13:32,945 INFO L87 Difference]: Start difference. First operand 6055 states and 9129 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 03:13:37,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:13:39,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:13:39,836 INFO L93 Difference]: Finished difference Result 15534 states and 23385 transitions. [2021-11-23 03:13:39,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:13:39,837 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 160 [2021-11-23 03:13:39,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:13:39,940 INFO L225 Difference]: With dead ends: 15534 [2021-11-23 03:13:39,940 INFO L226 Difference]: Without dead ends: 9506 [2021-11-23 03:13:39,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:13:39,982 INFO L933 BasicCegarLoop]: 4367 mSDtfsCounter, 3447 mSDsluCounter, 3886 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3447 SdHoareTripleChecker+Valid, 7843 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:13:39,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3447 Valid, 7843 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 898 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-23 03:13:39,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9506 states. [2021-11-23 03:13:40,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9506 to 9468. [2021-11-23 03:13:40,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9468 states, 5622 states have (on average 1.3413376022767698) internal successors, (7541), 5966 states have internal predecessors, (7541), 3343 states have call successors, (3343), 503 states have call predecessors, (3343), 500 states have return successors, (3342), 3170 states have call predecessors, (3342), 3339 states have call successors, (3342) [2021-11-23 03:13:40,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9468 states to 9468 states and 14226 transitions. [2021-11-23 03:13:40,881 INFO L78 Accepts]: Start accepts. Automaton has 9468 states and 14226 transitions. Word has length 160 [2021-11-23 03:13:40,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:13:40,884 INFO L470 AbstractCegarLoop]: Abstraction has 9468 states and 14226 transitions. [2021-11-23 03:13:40,884 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 03:13:40,884 INFO L276 IsEmpty]: Start isEmpty. Operand 9468 states and 14226 transitions. [2021-11-23 03:13:40,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-23 03:13:40,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:13:40,890 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:13:40,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:13:40,894 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:13:40,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:13:40,895 INFO L85 PathProgramCache]: Analyzing trace with hash -933088271, now seen corresponding path program 1 times [2021-11-23 03:13:40,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:13:40,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223865022] [2021-11-23 03:13:40,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:13:40,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:13:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:13:41,354 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-23 03:13:41,355 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:13:41,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223865022] [2021-11-23 03:13:41,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223865022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:13:41,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:13:41,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:13:41,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788836149] [2021-11-23 03:13:41,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:13:41,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:13:41,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:13:41,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:13:41,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:13:41,360 INFO L87 Difference]: Start difference. First operand 9468 states and 14226 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2021-11-23 03:13:57,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:14:00,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:00,684 INFO L93 Difference]: Finished difference Result 34033 states and 51055 transitions. [2021-11-23 03:14:00,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:14:00,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 165 [2021-11-23 03:14:00,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:00,933 INFO L225 Difference]: With dead ends: 34033 [2021-11-23 03:14:00,934 INFO L226 Difference]: Without dead ends: 24592 [2021-11-23 03:14:01,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:14:01,020 INFO L933 BasicCegarLoop]: 5256 mSDtfsCounter, 8999 mSDsluCounter, 7686 mSDsCounter, 0 mSdLazyCounter, 6163 mSolverCounterSat, 1851 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9091 SdHoareTripleChecker+Valid, 11735 SdHoareTripleChecker+Invalid, 8015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1851 IncrementalHoareTripleChecker+Valid, 6163 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:01,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9091 Valid, 11735 Invalid, 8015 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1851 Valid, 6163 Invalid, 1 Unknown, 0 Unchecked, 18.2s Time] [2021-11-23 03:14:01,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24592 states. [2021-11-23 03:14:03,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24592 to 24484. [2021-11-23 03:14:03,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24484 states, 14490 states have (on average 1.3371980676328503) internal successors, (19376), 15410 states have internal predecessors, (19376), 8656 states have call successors, (8656), 1342 states have call predecessors, (8656), 1335 states have return successors, (8661), 8184 states have call predecessors, (8661), 8652 states have call successors, (8661) [2021-11-23 03:14:03,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24484 states to 24484 states and 36693 transitions. [2021-11-23 03:14:03,512 INFO L78 Accepts]: Start accepts. Automaton has 24484 states and 36693 transitions. Word has length 165 [2021-11-23 03:14:03,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:03,519 INFO L470 AbstractCegarLoop]: Abstraction has 24484 states and 36693 transitions. [2021-11-23 03:14:03,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2021-11-23 03:14:03,519 INFO L276 IsEmpty]: Start isEmpty. Operand 24484 states and 36693 transitions. [2021-11-23 03:14:03,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-23 03:14:03,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:03,527 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:03,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:14:03,528 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:14:03,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:03,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1766944042, now seen corresponding path program 1 times [2021-11-23 03:14:03,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:03,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143453690] [2021-11-23 03:14:03,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:03,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:04,292 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-23 03:14:04,292 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:04,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143453690] [2021-11-23 03:14:04,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143453690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:04,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:04,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:04,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849285864] [2021-11-23 03:14:04,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:04,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:04,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:04,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:04,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:04,300 INFO L87 Difference]: Start difference. First operand 24484 states and 36693 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-23 03:14:10,402 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:14:12,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:12,052 INFO L93 Difference]: Finished difference Result 69483 states and 104035 transitions. [2021-11-23 03:14:12,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:12,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 172 [2021-11-23 03:14:12,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:12,486 INFO L225 Difference]: With dead ends: 69483 [2021-11-23 03:14:12,486 INFO L226 Difference]: Without dead ends: 45026 [2021-11-23 03:14:12,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:12,593 INFO L933 BasicCegarLoop]: 4689 mSDtfsCounter, 3632 mSDsluCounter, 3912 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3632 SdHoareTripleChecker+Valid, 8179 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:12,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3632 Valid, 8179 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 937 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-23 03:14:12,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45026 states. [2021-11-23 03:14:16,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45026 to 44977. [2021-11-23 03:14:16,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44977 states, 26639 states have (on average 1.335635722061639) internal successors, (35580), 28331 states have internal predecessors, (35580), 15822 states have call successors, (15822), 2538 states have call predecessors, (15822), 2513 states have return successors, (15875), 14919 states have call predecessors, (15875), 15818 states have call successors, (15875) [2021-11-23 03:14:16,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44977 states to 44977 states and 67277 transitions. [2021-11-23 03:14:16,978 INFO L78 Accepts]: Start accepts. Automaton has 44977 states and 67277 transitions. Word has length 172 [2021-11-23 03:14:16,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:16,979 INFO L470 AbstractCegarLoop]: Abstraction has 44977 states and 67277 transitions. [2021-11-23 03:14:16,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-23 03:14:16,980 INFO L276 IsEmpty]: Start isEmpty. Operand 44977 states and 67277 transitions. [2021-11-23 03:14:16,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-23 03:14:16,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:16,985 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:16,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:14:16,986 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:14:16,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:16,987 INFO L85 PathProgramCache]: Analyzing trace with hash 901733676, now seen corresponding path program 1 times [2021-11-23 03:14:16,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:16,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381260530] [2021-11-23 03:14:16,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:16,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:17,697 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-23 03:14:17,697 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:17,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381260530] [2021-11-23 03:14:17,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381260530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:17,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:17,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:17,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555643167] [2021-11-23 03:14:17,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:17,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:17,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:17,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:17,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:17,701 INFO L87 Difference]: Start difference. First operand 44977 states and 67277 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-23 03:14:24,303 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:14:27,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:27,020 INFO L93 Difference]: Finished difference Result 133717 states and 200037 transitions. [2021-11-23 03:14:27,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:27,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 172 [2021-11-23 03:14:27,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:27,665 INFO L225 Difference]: With dead ends: 133717 [2021-11-23 03:14:27,667 INFO L226 Difference]: Without dead ends: 88767 [2021-11-23 03:14:27,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:27,895 INFO L933 BasicCegarLoop]: 4538 mSDtfsCounter, 3613 mSDsluCounter, 3932 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3613 SdHoareTripleChecker+Valid, 8042 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:27,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3613 Valid, 8042 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 930 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-23 03:14:28,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88767 states. [2021-11-23 03:14:34,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88767 to 88714. [2021-11-23 03:14:34,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88714 states, 52541 states have (on average 1.3341390533107478) internal successors, (70097), 55913 states have internal predecessors, (70097), 31199 states have call successors, (31199), 5020 states have call predecessors, (31199), 4971 states have return successors, (31309), 29392 states have call predecessors, (31309), 31195 states have call successors, (31309) [2021-11-23 03:14:35,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88714 states to 88714 states and 132605 transitions. [2021-11-23 03:14:35,755 INFO L78 Accepts]: Start accepts. Automaton has 88714 states and 132605 transitions. Word has length 172 [2021-11-23 03:14:35,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:35,756 INFO L470 AbstractCegarLoop]: Abstraction has 88714 states and 132605 transitions. [2021-11-23 03:14:35,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-23 03:14:35,757 INFO L276 IsEmpty]: Start isEmpty. Operand 88714 states and 132605 transitions. [2021-11-23 03:14:35,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-23 03:14:35,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:35,761 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:35,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:14:35,762 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:14:35,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:35,763 INFO L85 PathProgramCache]: Analyzing trace with hash -615425435, now seen corresponding path program 1 times [2021-11-23 03:14:35,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:35,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021277065] [2021-11-23 03:14:35,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:35,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-23 03:14:36,112 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:36,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021277065] [2021-11-23 03:14:36,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021277065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:36,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:36,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:36,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738798027] [2021-11-23 03:14:36,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:36,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:36,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:36,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:36,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:36,116 INFO L87 Difference]: Start difference. First operand 88714 states and 132605 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-23 03:14:43,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:14:46,031 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:14:50,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:50,100 INFO L93 Difference]: Finished difference Result 259258 states and 388727 transitions. [2021-11-23 03:14:50,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:50,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 173 [2021-11-23 03:14:50,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:51,428 INFO L225 Difference]: With dead ends: 259258 [2021-11-23 03:14:51,428 INFO L226 Difference]: Without dead ends: 170571 [2021-11-23 03:14:51,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:51,813 INFO L933 BasicCegarLoop]: 4572 mSDtfsCounter, 3880 mSDsluCounter, 3823 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3880 SdHoareTripleChecker+Valid, 7983 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:51,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3880 Valid, 7983 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 870 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2021-11-23 03:14:52,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170571 states. [2021-11-23 03:15:03,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170571 to 170454. [2021-11-23 03:15:03,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170454 states, 101142 states have (on average 1.3371596369460759) internal successors, (135243), 107690 states have internal predecessors, (135243), 59772 states have call successors, (59772), 9700 states have call predecessors, (59772), 9537 states have return successors, (60972), 56113 states have call predecessors, (60972), 59768 states have call successors, (60972) [2021-11-23 03:15:05,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170454 states to 170454 states and 255987 transitions. [2021-11-23 03:15:06,004 INFO L78 Accepts]: Start accepts. Automaton has 170454 states and 255987 transitions. Word has length 173 [2021-11-23 03:15:06,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:06,005 INFO L470 AbstractCegarLoop]: Abstraction has 170454 states and 255987 transitions. [2021-11-23 03:15:06,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-23 03:15:06,006 INFO L276 IsEmpty]: Start isEmpty. Operand 170454 states and 255987 transitions. [2021-11-23 03:15:06,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-23 03:15:06,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:06,011 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:06,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:15:06,012 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)] === [2021-11-23 03:15:06,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:06,015 INFO L85 PathProgramCache]: Analyzing trace with hash -721447691, now seen corresponding path program 1 times [2021-11-23 03:15:06,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:15:06,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283070389] [2021-11-23 03:15:06,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:06,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:15:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2021-11-23 03:15:06,361 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:15:06,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283070389] [2021-11-23 03:15:06,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283070389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:06,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:06,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:15:06,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649738686] [2021-11-23 03:15:06,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:06,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:15:06,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:15:06,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:15:06,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:15:06,366 INFO L87 Difference]: Start difference. First operand 170454 states and 255987 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20)