./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.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_5342c728-8015-45e0-b8a4-23913c72bf6c/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5342c728-8015-45e0-b8a4-23913c72bf6c/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_5342c728-8015-45e0-b8a4-23913c72bf6c/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5342c728-8015-45e0-b8a4-23913c72bf6c/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5342c728-8015-45e0-b8a4-23913c72bf6c/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_5342c728-8015-45e0-b8a4-23913c72bf6c/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 3d612e3d3aaa54cbaaae78896c02f6ca9c3968df93584b0bde88897a60cfa04a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:52:09,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:52:09,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:52:10,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:52:10,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:52:10,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:52:10,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:52:10,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:52:10,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:52:10,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:52:10,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:52:10,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:52:10,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:52:10,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:52:10,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:52:10,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:52:10,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:52:10,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:52:10,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:52:10,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:52:10,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:52:10,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:52:10,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:52:10,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:52:10,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:52:10,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:52:10,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:52:10,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:52:10,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:52:10,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:52:10,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:52:10,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:52:10,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:52:10,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:52:10,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:52:10,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:52:10,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:52:10,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:52:10,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:52:10,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:52:10,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:52:10,102 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5342c728-8015-45e0-b8a4-23913c72bf6c/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:52:10,152 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:52:10,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:52:10,159 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:52:10,160 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:52:10,161 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:52:10,161 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:52:10,161 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:52:10,162 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:52:10,162 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:52:10,162 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:52:10,163 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:52:10,164 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:52:10,164 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:52:10,164 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:52:10,164 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:52:10,165 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:52:10,165 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:52:10,165 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:52:10,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:52:10,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:52:10,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:52:10,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:52:10,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:52:10,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:52:10,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:52:10,168 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:52:10,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:52:10,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:52:10,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:52:10,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:52:10,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:52:10,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:52:10,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:52:10,174 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:52:10,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:52:10,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:52:10,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:52:10,175 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:52:10,175 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_5342c728-8015-45e0-b8a4-23913c72bf6c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5342c728-8015-45e0-b8a4-23913c72bf6c/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d612e3d3aaa54cbaaae78896c02f6ca9c3968df93584b0bde88897a60cfa04a [2021-11-23 02:52:10,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:52:10,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:52:10,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:52:10,568 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:52:10,569 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:52:10,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5342c728-8015-45e0-b8a4-23913c72bf6c/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-23 02:52:10,658 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5342c728-8015-45e0-b8a4-23913c72bf6c/bin/utaipan-EQgc7hIp5V/data/fb5794533/04569c2c6021497d9761b4799013dd98/FLAG2303b321c [2021-11-23 02:52:11,799 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:52:11,800 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5342c728-8015-45e0-b8a4-23913c72bf6c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-23 02:52:11,849 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5342c728-8015-45e0-b8a4-23913c72bf6c/bin/utaipan-EQgc7hIp5V/data/fb5794533/04569c2c6021497d9761b4799013dd98/FLAG2303b321c [2021-11-23 02:52:12,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5342c728-8015-45e0-b8a4-23913c72bf6c/bin/utaipan-EQgc7hIp5V/data/fb5794533/04569c2c6021497d9761b4799013dd98 [2021-11-23 02:52:12,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:52:12,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:52:12,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:52:12,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:52:12,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:52:12,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:52:12" (1/1) ... [2021-11-23 02:52:12,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7635a32a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:12, skipping insertion in model container [2021-11-23 02:52:12,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:52:12" (1/1) ... [2021-11-23 02:52:12,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:52:12,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:52:15,878 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_5342c728-8015-45e0-b8a4-23913c72bf6c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319618,319631] [2021-11-23 02:52:15,882 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_5342c728-8015-45e0-b8a4-23913c72bf6c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319787,319800] [2021-11-23 02:52:15,893 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_5342c728-8015-45e0-b8a4-23913c72bf6c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319954,319967] [2021-11-23 02:52:15,894 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_5342c728-8015-45e0-b8a4-23913c72bf6c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[320122,320135] [2021-11-23 02:52:15,928 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:52:16,032 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:52:16,482 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_5342c728-8015-45e0-b8a4-23913c72bf6c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319618,319631] [2021-11-23 02:52:16,482 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_5342c728-8015-45e0-b8a4-23913c72bf6c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319787,319800] [2021-11-23 02:52:16,483 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_5342c728-8015-45e0-b8a4-23913c72bf6c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319954,319967] [2021-11-23 02:52:16,483 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_5342c728-8015-45e0-b8a4-23913c72bf6c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[320122,320135] [2021-11-23 02:52:16,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:52:16,766 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:52:16,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:16 WrapperNode [2021-11-23 02:52:16,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:52:16,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:52:16,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:52:16,769 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:52:16,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:16" (1/1) ... [2021-11-23 02:52:16,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:16" (1/1) ... [2021-11-23 02:52:17,210 INFO L137 Inliner]: procedures = 434, calls = 1806, calls flagged for inlining = 214, calls inlined = 197, statements flattened = 4294 [2021-11-23 02:52:17,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:52:17,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:52:17,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:52:17,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:52:17,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:16" (1/1) ... [2021-11-23 02:52:17,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:16" (1/1) ... [2021-11-23 02:52:17,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:16" (1/1) ... [2021-11-23 02:52:17,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:16" (1/1) ... [2021-11-23 02:52:17,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:16" (1/1) ... [2021-11-23 02:52:17,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:16" (1/1) ... [2021-11-23 02:52:17,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:16" (1/1) ... [2021-11-23 02:52:17,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:52:17,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:52:17,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:52:17,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:52:17,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:16" (1/1) ... [2021-11-23 02:52:17,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:52:17,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5342c728-8015-45e0-b8a4-23913c72bf6c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:52:17,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5342c728-8015-45e0-b8a4-23913c72bf6c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:52:17,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5342c728-8015-45e0-b8a4-23913c72bf6c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:52:17,655 INFO L130 BoogieDeclarations]: Found specification of procedure getlinkstatus [2021-11-23 02:52:17,655 INFO L138 BoogieDeclarations]: Found implementation of procedure getlinkstatus [2021-11-23 02:52:17,655 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-23 02:52:17,656 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-23 02:52:17,656 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-23 02:52:17,656 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-23 02:52:17,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:52:17,657 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:52:17,657 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-23 02:52:17,657 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-23 02:52:17,657 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-23 02:52:17,658 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-23 02:52:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:52:17,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:52:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:52:17,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:52:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 02:52:17,659 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 02:52:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_79 [2021-11-23 02:52:17,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_79 [2021-11-23 02:52:17,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_67 [2021-11-23 02:52:17,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_67 [2021-11-23 02:52:17,660 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-23 02:52:17,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-23 02:52:17,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 02:52:17,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 02:52:17,661 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-23 02:52:17,661 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-23 02:52:17,661 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-23 02:52:17,662 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-23 02:52:17,662 INFO L130 BoogieDeclarations]: Found specification of procedure fealnx_tx_timeout [2021-11-23 02:52:17,662 INFO L138 BoogieDeclarations]: Found implementation of procedure fealnx_tx_timeout [2021-11-23 02:52:17,662 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-23 02:52:17,663 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-23 02:52:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 02:52:17,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 02:52:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 02:52:17,663 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 02:52:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure __set_rx_mode [2021-11-23 02:52:17,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_rx_mode [2021-11-23 02:52:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure getlinktype [2021-11-23 02:52:17,664 INFO L138 BoogieDeclarations]: Found implementation of procedure getlinktype [2021-11-23 02:52:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-23 02:52:17,665 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-23 02:52:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:52:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-23 02:52:17,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-23 02:52:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 02:52:17,666 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 02:52:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:52:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure reset_rx_descriptors [2021-11-23 02:52:17,667 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_rx_descriptors [2021-11-23 02:52:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 02:52:17,667 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 02:52:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure fealnx_remove_one [2021-11-23 02:52:17,668 INFO L138 BoogieDeclarations]: Found implementation of procedure fealnx_remove_one [2021-11-23 02:52:17,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:52:17,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 02:52:17,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 02:52:17,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:52:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-23 02:52:17,669 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-23 02:52:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 02:52:17,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 02:52:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-23 02:52:17,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-23 02:52:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 02:52:17,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 02:52:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 02:52:17,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 02:52:17,671 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-23 02:52:17,671 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-23 02:52:17,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 02:52:17,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 02:52:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:52:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-23 02:52:17,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-23 02:52:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 02:52:17,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 02:52:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:52:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2021-11-23 02:52:17,673 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2021-11-23 02:52:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 02:52:17,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 02:52:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 02:52:17,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 02:52:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:52:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:52:17,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:52:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:52:17,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:52:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-23 02:52:17,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-23 02:52:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-23 02:52:17,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-23 02:52:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:52:17,676 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:52:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-23 02:52:17,677 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-23 02:52:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-23 02:52:17,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-23 02:52:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure stop_nic_rx [2021-11-23 02:52:17,678 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_nic_rx [2021-11-23 02:52:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-23 02:52:17,678 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-23 02:52:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:52:17,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:52:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:52:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:52:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:52:17,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:52:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_close [2021-11-23 02:52:17,680 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_close [2021-11-23 02:52:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:52:17,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:52:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-23 02:52:17,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-23 02:52:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_netdev_private [2021-11-23 02:52:17,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_netdev_private [2021-11-23 02:52:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure enable_rxtx [2021-11-23 02:52:17,682 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_rxtx [2021-11-23 02:52:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-23 02:52:17,682 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-23 02:52:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:52:17,682 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:52:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-23 02:52:17,683 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-23 02:52:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-23 02:52:17,683 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-23 02:52:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_78 [2021-11-23 02:52:17,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_78 [2021-11-23 02:52:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-23 02:52:17,684 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-23 02:52:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-23 02:52:17,684 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-23 02:52:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:52:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure reset_and_disable_rxtx [2021-11-23 02:52:17,685 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_and_disable_rxtx [2021-11-23 02:52:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-23 02:52:17,685 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-23 02:52:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:52:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-23 02:52:17,686 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-23 02:52:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:52:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-23 02:52:17,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-23 02:52:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 02:52:17,687 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 02:52:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_netdev_private [2021-11-23 02:52:17,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_netdev_private [2021-11-23 02:52:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 02:52:17,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 02:52:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_open [2021-11-23 02:52:17,688 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_open [2021-11-23 02:52:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-23 02:52:17,688 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-23 02:52:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-23 02:52:17,689 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-23 02:52:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-23 02:52:17,689 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-23 02:52:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure stop_nic_rxtx [2021-11-23 02:52:17,689 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_nic_rxtx [2021-11-23 02:52:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure m80x_send_cmd_to_phy [2021-11-23 02:52:17,690 INFO L138 BoogieDeclarations]: Found implementation of procedure m80x_send_cmd_to_phy [2021-11-23 02:52:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:52:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_rx_buffers [2021-11-23 02:52:17,690 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_rx_buffers [2021-11-23 02:52:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:52:17,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:52:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 02:52:17,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 02:52:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-23 02:52:17,691 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-23 02:52:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-23 02:52:17,692 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-23 02:52:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:52:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 02:52:17,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 02:52:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fealnx_exit_14_2 [2021-11-23 02:52:17,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fealnx_exit_14_2 [2021-11-23 02:52:18,665 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:52:18,670 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:52:19,458 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:52:22,334 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 02:52:22,447 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:52:23,966 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:52:23,966 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:52:23,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:52:23 BoogieIcfgContainer [2021-11-23 02:52:23,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:52:23,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:52:23,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:52:23,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:52:23,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:52:12" (1/3) ... [2021-11-23 02:52:23,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ffa1351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:52:23, skipping insertion in model container [2021-11-23 02:52:23,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:16" (2/3) ... [2021-11-23 02:52:23,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ffa1351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:52:23, skipping insertion in model container [2021-11-23 02:52:23,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:52:23" (3/3) ... [2021-11-23 02:52:23,989 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-23 02:52:24,005 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:52:24,005 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-23 02:52:24,085 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:52:24,106 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:52:24,111 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 02:52:24,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 1124 states, 651 states have (on average 1.2995391705069124) internal successors, (846), 672 states have internal predecessors, (846), 389 states have call successors, (389), 82 states have call predecessors, (389), 81 states have return successors, (383), 380 states have call predecessors, (383), 383 states have call successors, (383) [2021-11-23 02:52:24,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 02:52:24,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:24,194 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:52:24,195 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:52:24,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:24,202 INFO L85 PathProgramCache]: Analyzing trace with hash 969674018, now seen corresponding path program 1 times [2021-11-23 02:52:24,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:24,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027404671] [2021-11-23 02:52:24,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:24,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:25,063 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-23 02:52:25,063 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:25,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027404671] [2021-11-23 02:52:25,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027404671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:25,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:25,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:52:25,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580631275] [2021-11-23 02:52:25,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:25,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:52:25,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:25,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:52:25,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:25,129 INFO L87 Difference]: Start difference. First operand has 1124 states, 651 states have (on average 1.2995391705069124) internal successors, (846), 672 states have internal predecessors, (846), 389 states have call successors, (389), 82 states have call predecessors, (389), 81 states have return successors, (383), 380 states have call predecessors, (383), 383 states have call successors, (383) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-23 02:52:28,046 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:31,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:31,080 INFO L93 Difference]: Finished difference Result 3257 states and 4760 transitions. [2021-11-23 02:52:31,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:52:31,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2021-11-23 02:52:31,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:31,139 INFO L225 Difference]: With dead ends: 3257 [2021-11-23 02:52:31,139 INFO L226 Difference]: Without dead ends: 2142 [2021-11-23 02:52:31,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:31,165 INFO L933 BasicCegarLoop]: 1712 mSDtfsCounter, 1495 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:31,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1495 Valid, 3037 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 522 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2021-11-23 02:52:31,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2021-11-23 02:52:31,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2138. [2021-11-23 02:52:31,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2138 states, 1254 states have (on average 1.2926634768740033) internal successors, (1621), 1295 states have internal predecessors, (1621), 723 states have call successors, (723), 159 states have call predecessors, (723), 158 states have return successors, (719), 713 states have call predecessors, (719), 719 states have call successors, (719) [2021-11-23 02:52:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 3063 transitions. [2021-11-23 02:52:31,508 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 3063 transitions. Word has length 111 [2021-11-23 02:52:31,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:31,512 INFO L470 AbstractCegarLoop]: Abstraction has 2138 states and 3063 transitions. [2021-11-23 02:52:31,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-23 02:52:31,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 3063 transitions. [2021-11-23 02:52:31,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 02:52:31,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:31,533 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:52:31,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:52:31,534 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:52:31,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:31,536 INFO L85 PathProgramCache]: Analyzing trace with hash 679201334, now seen corresponding path program 1 times [2021-11-23 02:52:31,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:31,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14652495] [2021-11-23 02:52:31,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:31,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-23 02:52:31,858 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:31,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14652495] [2021-11-23 02:52:31,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14652495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:31,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:31,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:52:31,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767890294] [2021-11-23 02:52:31,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:31,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:52:31,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:31,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:52:31,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:31,871 INFO L87 Difference]: Start difference. First operand 2138 states and 3063 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-23 02:52:34,887 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:36,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:38,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:38,045 INFO L93 Difference]: Finished difference Result 6046 states and 8650 transitions. [2021-11-23 02:52:38,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:52:38,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2021-11-23 02:52:38,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:38,096 INFO L225 Difference]: With dead ends: 6046 [2021-11-23 02:52:38,096 INFO L226 Difference]: Without dead ends: 3927 [2021-11-23 02:52:38,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:38,112 INFO L933 BasicCegarLoop]: 1712 mSDtfsCounter, 1347 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:38,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1347 Valid, 3017 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 514 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2021-11-23 02:52:38,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2021-11-23 02:52:38,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 3897. [2021-11-23 02:52:38,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3897 states, 2281 states have (on average 1.288908373520386) internal successors, (2940), 2357 states have internal predecessors, (2940), 1308 states have call successors, (1308), 308 states have call predecessors, (1308), 305 states have return successors, (1322), 1281 states have call predecessors, (1322), 1304 states have call successors, (1322) [2021-11-23 02:52:38,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 5570 transitions. [2021-11-23 02:52:38,435 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 5570 transitions. Word has length 113 [2021-11-23 02:52:38,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:38,436 INFO L470 AbstractCegarLoop]: Abstraction has 3897 states and 5570 transitions. [2021-11-23 02:52:38,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-23 02:52:38,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 5570 transitions. [2021-11-23 02:52:38,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 02:52:38,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:38,451 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:52:38,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:52:38,451 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:52:38,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:38,452 INFO L85 PathProgramCache]: Analyzing trace with hash 799247234, now seen corresponding path program 1 times [2021-11-23 02:52:38,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:38,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694370977] [2021-11-23 02:52:38,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:38,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-23 02:52:38,736 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:38,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694370977] [2021-11-23 02:52:38,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694370977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:38,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:38,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:52:38,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370558060] [2021-11-23 02:52:38,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:38,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:52:38,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:38,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:52:38,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:38,745 INFO L87 Difference]: Start difference. First operand 3897 states and 5570 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-23 02:52:42,909 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:43,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:43,940 INFO L93 Difference]: Finished difference Result 11379 states and 16255 transitions. [2021-11-23 02:52:43,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:52:43,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2021-11-23 02:52:43,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:44,026 INFO L225 Difference]: With dead ends: 11379 [2021-11-23 02:52:44,026 INFO L226 Difference]: Without dead ends: 7501 [2021-11-23 02:52:44,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:44,056 INFO L933 BasicCegarLoop]: 1916 mSDtfsCounter, 1487 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 3213 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:44,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 3213 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 546 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-11-23 02:52:44,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7501 states. [2021-11-23 02:52:44,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7501 to 7467. [2021-11-23 02:52:44,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7467 states, 4391 states have (on average 1.2917330904122069) internal successors, (5672), 4547 states have internal predecessors, (5672), 2476 states have call successors, (2476), 608 states have call predecessors, (2476), 597 states have return successors, (2518), 2409 states have call predecessors, (2518), 2472 states have call successors, (2518) [2021-11-23 02:52:44,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7467 states to 7467 states and 10666 transitions. [2021-11-23 02:52:44,766 INFO L78 Accepts]: Start accepts. Automaton has 7467 states and 10666 transitions. Word has length 116 [2021-11-23 02:52:44,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:44,767 INFO L470 AbstractCegarLoop]: Abstraction has 7467 states and 10666 transitions. [2021-11-23 02:52:44,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-23 02:52:44,768 INFO L276 IsEmpty]: Start isEmpty. Operand 7467 states and 10666 transitions. [2021-11-23 02:52:44,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-23 02:52:44,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:44,771 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:52:44,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:52:44,772 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:52:44,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:44,773 INFO L85 PathProgramCache]: Analyzing trace with hash -335053181, now seen corresponding path program 1 times [2021-11-23 02:52:44,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:44,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857476396] [2021-11-23 02:52:44,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:44,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-23 02:52:45,036 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:45,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857476396] [2021-11-23 02:52:45,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857476396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:45,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:45,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:52:45,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189600110] [2021-11-23 02:52:45,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:45,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:52:45,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:45,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:52:45,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:52:45,041 INFO L87 Difference]: Start difference. First operand 7467 states and 10666 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-23 02:52:52,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:53,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:56,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:58,387 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:59,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:59,725 INFO L93 Difference]: Finished difference Result 17148 states and 24353 transitions. [2021-11-23 02:52:59,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:52:59,728 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2021-11-23 02:52:59,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:59,820 INFO L225 Difference]: With dead ends: 17148 [2021-11-23 02:52:59,820 INFO L226 Difference]: Without dead ends: 9700 [2021-11-23 02:52:59,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:52:59,870 INFO L933 BasicCegarLoop]: 2028 mSDtfsCounter, 4437 mSDsluCounter, 2745 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 1575 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4552 SdHoareTripleChecker+Valid, 4199 SdHoareTripleChecker+Invalid, 3761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1575 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:59,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4552 Valid, 4199 Invalid, 3761 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1575 Valid, 2184 Invalid, 2 Unknown, 0 Unchecked, 14.0s Time] [2021-11-23 02:52:59,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9700 states. [2021-11-23 02:53:00,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9700 to 9628. [2021-11-23 02:53:00,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9628 states, 5696 states have (on average 1.285814606741573) internal successors, (7324), 5892 states have internal predecessors, (7324), 3092 states have call successors, (3092), 856 states have call predecessors, (3092), 837 states have return successors, (3111), 2999 states have call predecessors, (3111), 3088 states have call successors, (3111) [2021-11-23 02:53:00,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9628 states to 9628 states and 13527 transitions. [2021-11-23 02:53:00,786 INFO L78 Accepts]: Start accepts. Automaton has 9628 states and 13527 transitions. Word has length 117 [2021-11-23 02:53:00,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:53:00,787 INFO L470 AbstractCegarLoop]: Abstraction has 9628 states and 13527 transitions. [2021-11-23 02:53:00,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-23 02:53:00,795 INFO L276 IsEmpty]: Start isEmpty. Operand 9628 states and 13527 transitions. [2021-11-23 02:53:00,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-23 02:53:00,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:53:00,799 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:53:00,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:53:00,800 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:53:00,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:53:00,801 INFO L85 PathProgramCache]: Analyzing trace with hash -256087408, now seen corresponding path program 1 times [2021-11-23 02:53:00,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:53:00,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812267176] [2021-11-23 02:53:00,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:00,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:53:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:01,018 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-23 02:53:01,019 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:53:01,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812267176] [2021-11-23 02:53:01,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812267176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:53:01,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:53:01,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:53:01,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028359474] [2021-11-23 02:53:01,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:53:01,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:53:01,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:53:01,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:53:01,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:53:01,023 INFO L87 Difference]: Start difference. First operand 9628 states and 13527 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-23 02:53:03,731 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:53:06,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:53:06,116 INFO L93 Difference]: Finished difference Result 25152 states and 35263 transitions. [2021-11-23 02:53:06,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:53:06,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2021-11-23 02:53:06,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:53:06,441 INFO L225 Difference]: With dead ends: 25152 [2021-11-23 02:53:06,441 INFO L226 Difference]: Without dead ends: 15543 [2021-11-23 02:53:06,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:53:06,493 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 1371 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:53:06,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1371 Valid, 2990 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 536 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-11-23 02:53:06,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15543 states. [2021-11-23 02:53:07,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15543 to 15511. [2021-11-23 02:53:07,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15511 states, 9155 states have (on average 1.2723102129983614) internal successors, (11648), 9503 states have internal predecessors, (11648), 4980 states have call successors, (4980), 1410 states have call predecessors, (4980), 1373 states have return successors, (5025), 4790 states have call predecessors, (5025), 4976 states have call successors, (5025) [2021-11-23 02:53:07,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15511 states to 15511 states and 21653 transitions. [2021-11-23 02:53:07,462 INFO L78 Accepts]: Start accepts. Automaton has 15511 states and 21653 transitions. Word has length 117 [2021-11-23 02:53:07,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:53:07,464 INFO L470 AbstractCegarLoop]: Abstraction has 15511 states and 21653 transitions. [2021-11-23 02:53:07,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-23 02:53:07,465 INFO L276 IsEmpty]: Start isEmpty. Operand 15511 states and 21653 transitions. [2021-11-23 02:53:07,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-23 02:53:07,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:53:07,468 INFO L514 BasicCegarLoop]: trace histogram [11, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:53:07,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:53:07,469 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 02:53:07,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:53:07,470 INFO L85 PathProgramCache]: Analyzing trace with hash -461124589, now seen corresponding path program 1 times [2021-11-23 02:53:07,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:53:07,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443553473] [2021-11-23 02:53:07,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:07,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:53:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:07,627 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2021-11-23 02:53:07,627 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:53:07,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443553473] [2021-11-23 02:53:07,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443553473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:53:07,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:53:07,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:53:07,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370176187] [2021-11-23 02:53:07,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:53:07,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:53:07,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:53:07,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:53:07,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:53:07,630 INFO L87 Difference]: Start difference. First operand 15511 states and 21653 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-23 02:53:10,687 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:53:12,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:53:12,705 INFO L93 Difference]: Finished difference Result 45711 states and 63868 transitions. [2021-11-23 02:53:12,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:53:12,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 134 [2021-11-23 02:53:12,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:53:12,901 INFO L225 Difference]: With dead ends: 45711 [2021-11-23 02:53:12,901 INFO L226 Difference]: Without dead ends: 30219 [2021-11-23 02:53:12,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:53:12,976 INFO L933 BasicCegarLoop]: 1975 mSDtfsCounter, 1545 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 3314 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:53:12,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 3314 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 576 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2021-11-23 02:53:13,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30219 states. [2021-11-23 02:53:14,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30219 to 30145. [2021-11-23 02:53:14,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30145 states, 17764 states have (on average 1.2725737446521055) internal successors, (22606), 18488 states have internal predecessors, (22606), 9705 states have call successors, (9705), 2746 states have call predecessors, (9705), 2673 states have return successors, (9799), 9292 states have call predecessors, (9799), 9701 states have call successors, (9799) [2021-11-23 02:53:15,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30145 states to 30145 states and 42110 transitions. [2021-11-23 02:53:15,300 INFO L78 Accepts]: Start accepts. Automaton has 30145 states and 42110 transitions. Word has length 134 [2021-11-23 02:53:15,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:53:15,300 INFO L470 AbstractCegarLoop]: Abstraction has 30145 states and 42110 transitions. [2021-11-23 02:53:15,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-23 02:53:15,301 INFO L276 IsEmpty]: Start isEmpty. Operand 30145 states and 42110 transitions. [2021-11-23 02:53:15,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-23 02:53:15,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:53:15,304 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:53:15,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:53:15,305 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:53:15,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:53:15,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2059422944, now seen corresponding path program 1 times [2021-11-23 02:53:15,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:53:15,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578130188] [2021-11-23 02:53:15,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:15,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:53:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:15,560 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-23 02:53:15,560 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:53:15,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578130188] [2021-11-23 02:53:15,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578130188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:53:15,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:53:15,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:53:15,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803092318] [2021-11-23 02:53:15,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:53:15,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:53:15,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:53:15,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:53:15,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:53:15,563 INFO L87 Difference]: Start difference. First operand 30145 states and 42110 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:53:18,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:53:23,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:53:23,285 INFO L93 Difference]: Finished difference Result 60225 states and 84136 transitions. [2021-11-23 02:53:23,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:53:23,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 153 [2021-11-23 02:53:23,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:53:23,642 INFO L225 Difference]: With dead ends: 60225 [2021-11-23 02:53:23,642 INFO L226 Difference]: Without dead ends: 60223 [2021-11-23 02:53:23,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:53:23,676 INFO L933 BasicCegarLoop]: 1809 mSDtfsCounter, 1542 mSDsluCounter, 5774 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 6728 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:53:23,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1554 Valid, 6728 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1179 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-11-23 02:53:23,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60223 states. [2021-11-23 02:53:27,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60223 to 60217. [2021-11-23 02:53:27,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60217 states, 35470 states have (on average 1.2728784888638285) internal successors, (45149), 36916 states have internal predecessors, (45149), 19397 states have call successors, (19397), 5493 states have call predecessors, (19397), 5347 states have return successors, (19585), 18571 states have call predecessors, (19585), 19389 states have call successors, (19585) [2021-11-23 02:53:28,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60217 states to 60217 states and 84131 transitions. [2021-11-23 02:53:28,210 INFO L78 Accepts]: Start accepts. Automaton has 60217 states and 84131 transitions. Word has length 153 [2021-11-23 02:53:28,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:53:28,212 INFO L470 AbstractCegarLoop]: Abstraction has 60217 states and 84131 transitions. [2021-11-23 02:53:28,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:53:28,212 INFO L276 IsEmpty]: Start isEmpty. Operand 60217 states and 84131 transitions. [2021-11-23 02:53:28,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-23 02:53:28,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:53:28,216 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:53:28,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:53:28,217 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:53:28,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:53:28,218 INFO L85 PathProgramCache]: Analyzing trace with hash -702875995, now seen corresponding path program 1 times [2021-11-23 02:53:28,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:53:28,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733360409] [2021-11-23 02:53:28,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:28,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:53:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:28,445 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2021-11-23 02:53:28,445 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:53:28,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733360409] [2021-11-23 02:53:28,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733360409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:53:28,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:53:28,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:53:28,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523685148] [2021-11-23 02:53:28,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:53:28,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:53:28,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:53:28,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:53:28,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:53:28,448 INFO L87 Difference]: Start difference. First operand 60217 states and 84131 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:53:31,754 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:53:36,679 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:53:38,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:53:38,386 INFO L93 Difference]: Finished difference Result 60229 states and 84139 transitions. [2021-11-23 02:53:38,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:53:38,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 161 [2021-11-23 02:53:38,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:53:38,734 INFO L225 Difference]: With dead ends: 60229 [2021-11-23 02:53:38,734 INFO L226 Difference]: Without dead ends: 60227 [2021-11-23 02:53:38,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:53:38,772 INFO L933 BasicCegarLoop]: 1812 mSDtfsCounter, 1536 mSDsluCounter, 5774 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 6731 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:53:38,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 6731 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1178 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2021-11-23 02:53:38,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60227 states. [2021-11-23 02:53:41,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60227 to 60221. [2021-11-23 02:53:41,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60221 states, 35473 states have (on average 1.272855411157782) internal successors, (45152), 36919 states have internal predecessors, (45152), 19397 states have call successors, (19397), 5494 states have call predecessors, (19397), 5348 states have return successors, (19585), 18571 states have call predecessors, (19585), 19389 states have call successors, (19585) [2021-11-23 02:53:42,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60221 states to 60221 states and 84134 transitions. [2021-11-23 02:53:42,309 INFO L78 Accepts]: Start accepts. Automaton has 60221 states and 84134 transitions. Word has length 161 [2021-11-23 02:53:42,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:53:42,312 INFO L470 AbstractCegarLoop]: Abstraction has 60221 states and 84134 transitions. [2021-11-23 02:53:42,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:53:42,313 INFO L276 IsEmpty]: Start isEmpty. Operand 60221 states and 84134 transitions. [2021-11-23 02:53:42,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-23 02:53:42,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:53:42,318 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:53:42,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:53:42,318 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:53:42,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:53:42,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1535553920, now seen corresponding path program 1 times [2021-11-23 02:53:42,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:53:42,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825327475] [2021-11-23 02:53:42,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:42,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:53:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:42,606 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2021-11-23 02:53:42,606 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:53:42,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825327475] [2021-11-23 02:53:42,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825327475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:53:42,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:53:42,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:53:42,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961698826] [2021-11-23 02:53:42,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:53:42,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:53:42,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:53:42,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:53:42,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:53:42,610 INFO L87 Difference]: Start difference. First operand 60221 states and 84134 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:53:44,975 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:53:46,990 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:53:49,006 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:53:53,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:53:53,754 INFO L93 Difference]: Finished difference Result 60231 states and 84143 transitions. [2021-11-23 02:53:53,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:53:53,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 163 [2021-11-23 02:53:53,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:53:54,072 INFO L225 Difference]: With dead ends: 60231 [2021-11-23 02:53:54,072 INFO L226 Difference]: Without dead ends: 60229 [2021-11-23 02:53:54,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:53:54,105 INFO L933 BasicCegarLoop]: 1341 mSDtfsCounter, 1540 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 4003 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:53:54,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1550 Valid, 4003 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 774 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2021-11-23 02:53:54,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60229 states. [2021-11-23 02:53:56,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60229 to 60229. [2021-11-23 02:53:56,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60229 states, 35479 states have (on average 1.2728092674539868) internal successors, (45158), 36925 states have internal predecessors, (45158), 19397 states have call successors, (19397), 5496 states have call predecessors, (19397), 5350 states have return successors, (19585), 18571 states have call predecessors, (19585), 19389 states have call successors, (19585) [2021-11-23 02:53:57,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60229 states to 60229 states and 84140 transitions. [2021-11-23 02:53:57,101 INFO L78 Accepts]: Start accepts. Automaton has 60229 states and 84140 transitions. Word has length 163 [2021-11-23 02:53:57,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:53:57,102 INFO L470 AbstractCegarLoop]: Abstraction has 60229 states and 84140 transitions. [2021-11-23 02:53:57,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:53:57,102 INFO L276 IsEmpty]: Start isEmpty. Operand 60229 states and 84140 transitions. [2021-11-23 02:53:57,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-23 02:53:57,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:53:57,107 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:53:57,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:53:57,108 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:53:57,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:53:57,109 INFO L85 PathProgramCache]: Analyzing trace with hash -589898357, now seen corresponding path program 1 times [2021-11-23 02:53:57,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:53:57,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294390919] [2021-11-23 02:53:57,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:57,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:53:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:57,318 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2021-11-23 02:53:57,318 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:53:57,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294390919] [2021-11-23 02:53:57,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294390919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:53:57,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:53:57,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:53:57,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252572953] [2021-11-23 02:53:57,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:53:57,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:53:57,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:53:57,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:53:57,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:53:57,321 INFO L87 Difference]: Start difference. First operand 60229 states and 84140 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:54:00,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:54:05,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:05,628 INFO L93 Difference]: Finished difference Result 60241 states and 84148 transitions. [2021-11-23 02:54:05,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:54:05,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 172 [2021-11-23 02:54:05,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:05,905 INFO L225 Difference]: With dead ends: 60241 [2021-11-23 02:54:05,905 INFO L226 Difference]: Without dead ends: 60239 [2021-11-23 02:54:05,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:54:05,937 INFO L933 BasicCegarLoop]: 1812 mSDtfsCounter, 1536 mSDsluCounter, 5774 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 6731 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:05,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 6731 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1179 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-23 02:54:06,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60239 states. [2021-11-23 02:54:08,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60239 to 60233. [2021-11-23 02:54:08,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60233 states, 35482 states have (on average 1.2727862014542586) internal successors, (45161), 36928 states have internal predecessors, (45161), 19397 states have call successors, (19397), 5497 states have call predecessors, (19397), 5351 states have return successors, (19585), 18571 states have call predecessors, (19585), 19389 states have call successors, (19585) [2021-11-23 02:54:09,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60233 states to 60233 states and 84143 transitions. [2021-11-23 02:54:09,139 INFO L78 Accepts]: Start accepts. Automaton has 60233 states and 84143 transitions. Word has length 172 [2021-11-23 02:54:09,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:09,140 INFO L470 AbstractCegarLoop]: Abstraction has 60233 states and 84143 transitions. [2021-11-23 02:54:09,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:54:09,141 INFO L276 IsEmpty]: Start isEmpty. Operand 60233 states and 84143 transitions. [2021-11-23 02:54:09,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-23 02:54:09,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:09,148 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:54:09,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:54:09,148 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:54:09,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:09,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1765660048, now seen corresponding path program 1 times [2021-11-23 02:54:09,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:54:09,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096529060] [2021-11-23 02:54:09,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:09,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:09,714 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2021-11-23 02:54:09,714 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:54:09,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096529060] [2021-11-23 02:54:09,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096529060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:09,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:09,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:54:09,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793940272] [2021-11-23 02:54:09,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:09,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:54:09,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:54:09,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:54:09,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:54:09,717 INFO L87 Difference]: Start difference. First operand 60233 states and 84143 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-23 02:54:12,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:54:15,859 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:54:18,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:18,340 INFO L93 Difference]: Finished difference Result 60245 states and 84151 transitions. [2021-11-23 02:54:18,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:54:18,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 177 [2021-11-23 02:54:18,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:18,619 INFO L225 Difference]: With dead ends: 60245 [2021-11-23 02:54:18,619 INFO L226 Difference]: Without dead ends: 60243 [2021-11-23 02:54:18,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:54:18,927 INFO L933 BasicCegarLoop]: 1812 mSDtfsCounter, 1536 mSDsluCounter, 5774 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 6731 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:18,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1544 Valid, 6731 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1179 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-11-23 02:54:18,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60243 states. [2021-11-23 02:54:21,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60243 to 60237. [2021-11-23 02:54:21,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60237 states, 35485 states have (on average 1.2727631393546568) internal successors, (45164), 36931 states have internal predecessors, (45164), 19397 states have call successors, (19397), 5498 states have call predecessors, (19397), 5352 states have return successors, (19585), 18571 states have call predecessors, (19585), 19389 states have call successors, (19585) [2021-11-23 02:54:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60237 states to 60237 states and 84146 transitions. [2021-11-23 02:54:22,011 INFO L78 Accepts]: Start accepts. Automaton has 60237 states and 84146 transitions. Word has length 177 [2021-11-23 02:54:22,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:22,012 INFO L470 AbstractCegarLoop]: Abstraction has 60237 states and 84146 transitions. [2021-11-23 02:54:22,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-23 02:54:22,012 INFO L276 IsEmpty]: Start isEmpty. Operand 60237 states and 84146 transitions. [2021-11-23 02:54:22,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-23 02:54:22,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:22,019 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:54:22,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 02:54:22,019 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:54:22,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:22,020 INFO L85 PathProgramCache]: Analyzing trace with hash -417910677, now seen corresponding path program 1 times [2021-11-23 02:54:22,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:54:22,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077994466] [2021-11-23 02:54:22,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:22,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:22,245 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2021-11-23 02:54:22,246 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:54:22,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077994466] [2021-11-23 02:54:22,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077994466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:22,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:22,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:54:22,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452116267] [2021-11-23 02:54:22,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:22,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:54:22,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:54:22,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:54:22,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:54:22,250 INFO L87 Difference]: Start difference. First operand 60237 states and 84146 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-23 02:54:25,696 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:54:30,870 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:54:32,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:54:33,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:33,657 INFO L93 Difference]: Finished difference Result 60249 states and 84154 transitions. [2021-11-23 02:54:33,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:54:33,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 182 [2021-11-23 02:54:33,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:33,951 INFO L225 Difference]: With dead ends: 60249 [2021-11-23 02:54:33,951 INFO L226 Difference]: Without dead ends: 60247 [2021-11-23 02:54:33,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:54:33,978 INFO L933 BasicCegarLoop]: 1812 mSDtfsCounter, 1536 mSDsluCounter, 5774 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 6731 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:33,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1543 Valid, 6731 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1178 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2021-11-23 02:54:34,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60247 states. [2021-11-23 02:54:36,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60247 to 60241. [2021-11-23 02:54:36,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60241 states, 35488 states have (on average 1.272740081154193) internal successors, (45167), 36934 states have internal predecessors, (45167), 19397 states have call successors, (19397), 5499 states have call predecessors, (19397), 5353 states have return successors, (19585), 18571 states have call predecessors, (19585), 19389 states have call successors, (19585) [2021-11-23 02:54:37,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60241 states to 60241 states and 84149 transitions. [2021-11-23 02:54:37,425 INFO L78 Accepts]: Start accepts. Automaton has 60241 states and 84149 transitions. Word has length 182 [2021-11-23 02:54:37,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:37,427 INFO L470 AbstractCegarLoop]: Abstraction has 60241 states and 84149 transitions. [2021-11-23 02:54:37,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-23 02:54:37,428 INFO L276 IsEmpty]: Start isEmpty. Operand 60241 states and 84149 transitions. [2021-11-23 02:54:37,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-23 02:54:37,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:37,435 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:54:37,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 02:54:37,436 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:54:37,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:37,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1271837376, now seen corresponding path program 1 times [2021-11-23 02:54:37,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:54:37,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597735628] [2021-11-23 02:54:37,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:37,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:37,640 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2021-11-23 02:54:37,641 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:54:37,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597735628] [2021-11-23 02:54:37,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597735628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:37,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:37,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:54:37,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770107803] [2021-11-23 02:54:37,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:37,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:54:37,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:54:37,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:54:37,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:54:37,645 INFO L87 Difference]: Start difference. First operand 60241 states and 84149 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-23 02:54:41,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:54:45,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:54:46,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:46,833 INFO L93 Difference]: Finished difference Result 68005 states and 93143 transitions. [2021-11-23 02:54:46,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:54:46,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 183 [2021-11-23 02:54:46,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:47,249 INFO L225 Difference]: With dead ends: 68005 [2021-11-23 02:54:47,249 INFO L226 Difference]: Without dead ends: 68003 [2021-11-23 02:54:47,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:54:47,283 INFO L933 BasicCegarLoop]: 1494 mSDtfsCounter, 1175 mSDsluCounter, 4159 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 5000 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:47,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 5000 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 956 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2021-11-23 02:54:47,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68003 states. [2021-11-23 02:54:50,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68003 to 68001. [2021-11-23 02:54:50,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68001 states, 39942 states have (on average 1.2639577387211456) internal successors, (50485), 41544 states have internal predecessors, (50485), 21233 states have call successors, (21233), 6969 states have call predecessors, (21233), 6823 states have return successors, (21421), 20407 states have call predecessors, (21421), 21225 states have call successors, (21421) [2021-11-23 02:54:50,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68001 states to 68001 states and 93139 transitions. [2021-11-23 02:54:50,521 INFO L78 Accepts]: Start accepts. Automaton has 68001 states and 93139 transitions. Word has length 183 [2021-11-23 02:54:50,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:50,521 INFO L470 AbstractCegarLoop]: Abstraction has 68001 states and 93139 transitions. [2021-11-23 02:54:50,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-23 02:54:50,522 INFO L276 IsEmpty]: Start isEmpty. Operand 68001 states and 93139 transitions. [2021-11-23 02:54:50,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-23 02:54:50,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:50,529 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 8, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:54:50,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 02:54:50,529 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:54:50,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:50,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1884602181, now seen corresponding path program 1 times [2021-11-23 02:54:50,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:54:50,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70077290] [2021-11-23 02:54:50,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:50,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:50,728 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-11-23 02:54:50,729 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:54:50,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70077290] [2021-11-23 02:54:50,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70077290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:50,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:50,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:54:50,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390513215] [2021-11-23 02:54:50,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:50,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:54:50,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:54:50,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:54:50,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:54:50,732 INFO L87 Difference]: Start difference. First operand 68001 states and 93139 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-23 02:54:54,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:54:59,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:55:01,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:55:03,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []