./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c787d5b-b579-470b-82ac-b5d673908171/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c787d5b-b579-470b-82ac-b5d673908171/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c787d5b-b579-470b-82ac-b5d673908171/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c787d5b-b579-470b-82ac-b5d673908171/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c787d5b-b579-470b-82ac-b5d673908171/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c787d5b-b579-470b-82ac-b5d673908171/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 678d1ed0889f06c506279e4c19484f47385b64dd1d4a949ec484624bf8468835 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:49:43,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:49:43,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:49:43,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:49:43,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:49:43,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:49:43,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:49:43,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:49:43,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:49:43,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:49:43,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:49:43,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:49:43,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:49:43,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:49:43,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:49:43,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:49:43,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:49:43,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:49:43,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:49:43,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:49:43,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:49:43,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:49:43,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:49:43,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:49:43,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:49:43,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:49:43,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:49:43,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:49:43,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:49:43,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:49:43,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:49:43,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:49:43,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:49:43,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:49:43,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:49:43,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:49:43,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:49:43,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:49:43,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:49:43,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:49:43,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:49:43,289 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c787d5b-b579-470b-82ac-b5d673908171/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:49:43,343 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:49:43,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:49:43,344 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:49:43,345 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:49:43,346 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:49:43,346 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:49:43,346 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:49:43,347 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:49:43,347 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:49:43,347 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:49:43,348 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:49:43,349 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:49:43,349 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:49:43,349 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:49:43,349 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:49:43,350 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:49:43,350 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:49:43,350 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:49:43,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:49:43,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:49:43,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:49:43,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:49:43,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:49:43,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:49:43,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:49:43,353 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:49:43,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:49:43,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:49:43,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:49:43,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:49:43,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:49:43,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:49:43,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:49:43,357 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:49:43,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:49:43,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:49:43,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:49:43,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:49:43,359 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_3c787d5b-b579-470b-82ac-b5d673908171/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c787d5b-b579-470b-82ac-b5d673908171/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 678d1ed0889f06c506279e4c19484f47385b64dd1d4a949ec484624bf8468835 [2021-11-21 01:49:43,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:49:43,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:49:43,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:49:43,705 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:49:43,705 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:49:43,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c787d5b-b579-470b-82ac-b5d673908171/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i [2021-11-21 01:49:43,776 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c787d5b-b579-470b-82ac-b5d673908171/bin/utaipan-TEXQjIfE4P/data/223c031fc/57bbbff656d548d3ac38438a1c159050/FLAG8be1ffba4 [2021-11-21 01:49:44,992 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:49:44,992 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c787d5b-b579-470b-82ac-b5d673908171/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i [2021-11-21 01:49:45,076 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c787d5b-b579-470b-82ac-b5d673908171/bin/utaipan-TEXQjIfE4P/data/223c031fc/57bbbff656d548d3ac38438a1c159050/FLAG8be1ffba4 [2021-11-21 01:49:45,131 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c787d5b-b579-470b-82ac-b5d673908171/bin/utaipan-TEXQjIfE4P/data/223c031fc/57bbbff656d548d3ac38438a1c159050 [2021-11-21 01:49:45,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:49:45,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:49:45,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:49:45,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:49:45,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:49:45,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:45" (1/1) ... [2021-11-21 01:49:45,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65259e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:45, skipping insertion in model container [2021-11-21 01:49:45,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:45" (1/1) ... [2021-11-21 01:49:45,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:49:45,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:49:53,175 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_3c787d5b-b579-470b-82ac-b5d673908171/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[596672,596685] [2021-11-21 01:49:53,178 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_3c787d5b-b579-470b-82ac-b5d673908171/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[596841,596854] [2021-11-21 01:49:53,178 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_3c787d5b-b579-470b-82ac-b5d673908171/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[597008,597021] [2021-11-21 01:49:53,179 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_3c787d5b-b579-470b-82ac-b5d673908171/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[597176,597189] [2021-11-21 01:49:53,224 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:49:53,302 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:49:54,239 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_3c787d5b-b579-470b-82ac-b5d673908171/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[596672,596685] [2021-11-21 01:49:54,240 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_3c787d5b-b579-470b-82ac-b5d673908171/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[596841,596854] [2021-11-21 01:49:54,240 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_3c787d5b-b579-470b-82ac-b5d673908171/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[597008,597021] [2021-11-21 01:49:54,241 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_3c787d5b-b579-470b-82ac-b5d673908171/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[597176,597189] [2021-11-21 01:49:54,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:49:54,641 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:49:54,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:54 WrapperNode [2021-11-21 01:49:54,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:49:54,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:49:54,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:49:54,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:49:54,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:54" (1/1) ... [2021-11-21 01:49:54,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:54" (1/1) ... [2021-11-21 01:49:55,192 INFO L137 Inliner]: procedures = 824, calls = 5679, calls flagged for inlining = 430, calls inlined = 371, statements flattened = 11405 [2021-11-21 01:49:55,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:49:55,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:49:55,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:49:55,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:49:55,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:54" (1/1) ... [2021-11-21 01:49:55,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:54" (1/1) ... [2021-11-21 01:49:55,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:54" (1/1) ... [2021-11-21 01:49:55,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:54" (1/1) ... [2021-11-21 01:49:55,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:54" (1/1) ... [2021-11-21 01:49:55,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:54" (1/1) ... [2021-11-21 01:49:55,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:54" (1/1) ... [2021-11-21 01:49:55,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:49:55,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:49:55,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:49:55,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:49:55,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:54" (1/1) ... [2021-11-21 01:49:55,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:49:55,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c787d5b-b579-470b-82ac-b5d673908171/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:49:55,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c787d5b-b579-470b-82ac-b5d673908171/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:49:56,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c787d5b-b579-470b-82ac-b5d673908171/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:49:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 01:49:56,036 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 01:49:56,037 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_remove [2021-11-21 01:49:56,037 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_remove [2021-11-21 01:49:56,037 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_led [2021-11-21 01:49:56,037 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_led [2021-11-21 01:49:56,037 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_alloc_rx_skbs [2021-11-21 01:49:56,038 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_alloc_rx_skbs [2021-11-21 01:49:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:49:56,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:49:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure rx_set_rss [2021-11-21 01:49:56,038 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_set_rss [2021-11-21 01:49:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_power_aux [2021-11-21 01:49:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_power_aux [2021-11-21 01:49:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 01:49:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 01:49:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2021-11-21 01:49:56,040 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2021-11-21 01:49:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 01:49:56,040 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 01:49:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_add_filter [2021-11-21 01:49:56,040 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_add_filter [2021-11-21 01:49:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-21 01:49:56,041 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-21 01:49:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure PageTail [2021-11-21 01:49:56,041 INFO L138 BoogieDeclarations]: Found implementation of procedure PageTail [2021-11-21 01:49:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size_set [2021-11-21 01:49:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size_set [2021-11-21 01:49:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 01:49:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 01:49:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 01:49:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 01:49:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_init_netdev [2021-11-21 01:49:56,043 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_init_netdev [2021-11-21 01:49:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-21 01:49:56,043 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-21 01:49:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-21 01:49:56,044 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-21 01:49:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure netif_schedule_queue [2021-11-21 01:49:56,044 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_schedule_queue [2021-11-21 01:49:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_get_regs_len [2021-11-21 01:49:56,044 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_get_regs_len [2021-11-21 01:49:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 01:49:56,045 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 01:49:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_update [2021-11-21 01:49:56,045 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_update [2021-11-21 01:49:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 01:49:56,046 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 01:49:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:49:56,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:49:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_ramset [2021-11-21 01:49:56,046 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_ramset [2021-11-21 01:49:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:49:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_update_features [2021-11-21 01:49:56,047 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_update_features [2021-11-21 01:49:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_netpoll [2021-11-21 01:49:56,047 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_netpoll [2021-11-21 01:49:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-21 01:49:56,048 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-21 01:49:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 01:49:56,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 01:49:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2021-11-21 01:49:56,049 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2021-11-21 01:49:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-21 01:49:56,049 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-21 01:49:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-21 01:49:56,049 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-21 01:49:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 01:49:56,050 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 01:49:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_tx_lock [2021-11-21 01:49:56,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_tx_lock [2021-11-21 01:49:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-21 01:49:56,051 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-21 01:49:56,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:49:56,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:49:56,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:49:56,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 01:49:56,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 01:49:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 01:49:56,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 01:49:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_add [2021-11-21 01:49:56,052 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_add [2021-11-21 01:49:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-11-21 01:49:56,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-11-21 01:49:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-21 01:49:56,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-21 01:49:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev [2021-11-21 01:49:56,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev [2021-11-21 01:49:56,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_5 [2021-11-21 01:49:56,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_5 [2021-11-21 01:49:56,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-21 01:49:56,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-21 01:49:56,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:49:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_map_skb [2021-11-21 01:49:56,055 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_map_skb [2021-11-21 01:49:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_resume [2021-11-21 01:49:56,055 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_resume [2021-11-21 01:49:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure roundup_ring_size [2021-11-21 01:49:56,056 INFO L138 BoogieDeclarations]: Found implementation of procedure roundup_ring_size [2021-11-21 01:49:56,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:49:56,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:49:56,056 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 01:49:56,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 01:49:56,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:49:56,057 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 01:49:56,057 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_pci_read32 [2021-11-21 01:49:56,057 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_pci_read32 [2021-11-21 01:49:56,057 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-21 01:49:56,058 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-21 01:49:56,058 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_disable [2021-11-21 01:49:56,058 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_disable [2021-11-21 01:49:56,058 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_clean [2021-11-21 01:49:56,058 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_clean [2021-11-21 01:49:56,059 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-21 01:49:56,059 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-21 01:49:56,059 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:49:56,059 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:49:56,060 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_hw_down [2021-11-21 01:49:56,060 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_hw_down [2021-11-21 01:49:56,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 01:49:56,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 01:49:56,060 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_phy_reinit [2021-11-21 01:49:56,061 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_phy_reinit [2021-11-21 01:49:56,061 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 01:49:56,061 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 01:49:56,061 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_pci_read16 [2021-11-21 01:49:56,061 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_pci_read16 [2021-11-21 01:49:56,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:49:56,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:49:56,062 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_pci_write16 [2021-11-21 01:49:56,062 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_pci_write16 [2021-11-21 01:49:56,063 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-21 01:49:56,063 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-21 01:49:56,063 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_free_buffers [2021-11-21 01:49:56,063 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_free_buffers [2021-11-21 01:49:56,063 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-21 01:49:56,063 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-21 01:49:56,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:49:56,064 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 01:49:56,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 01:49:56,064 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-11-21 01:49:56,064 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-11-21 01:49:56,065 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2021-11-21 01:49:56,065 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2021-11-21 01:49:56,065 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 01:49:56,065 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 01:49:56,065 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_read32 [2021-11-21 01:49:56,066 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_read32 [2021-11-21 01:49:56,066 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-21 01:49:56,066 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_set_multicast [2021-11-21 01:49:56,066 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_set_multicast [2021-11-21 01:49:56,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 01:49:56,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 01:49:56,067 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_prefetch_init [2021-11-21 01:49:56,067 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_prefetch_init [2021-11-21 01:49:56,067 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_reset [2021-11-21 01:49:56,067 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_reset [2021-11-21 01:49:56,067 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-21 01:49:56,068 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-21 01:49:56,068 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-21 01:49:56,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-21 01:49:56,068 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-21 01:49:56,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-21 01:49:56,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_phy_lock_of_sky2_port [2021-11-21 01:49:56,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_phy_lock_of_sky2_port [2021-11-21 01:49:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:49:56,069 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:49:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-21 01:49:56,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-21 01:49:56,070 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-21 01:49:56,070 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-21 01:49:56,070 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_vpd_wait [2021-11-21 01:49:56,070 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_vpd_wait [2021-11-21 01:49:56,070 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-21 01:49:56,071 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-21 01:49:56,071 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_shutdown [2021-11-21 01:49:56,071 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_shutdown [2021-11-21 01:49:56,071 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_read16 [2021-11-21 01:49:56,071 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_read16 [2021-11-21 01:49:56,072 INFO L130 BoogieDeclarations]: Found specification of procedure get_tx_le [2021-11-21 01:49:56,072 INFO L138 BoogieDeclarations]: Found implementation of procedure get_tx_le [2021-11-21 01:49:56,072 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_stop [2021-11-21 01:49:56,072 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_stop [2021-11-21 01:49:56,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:49:56,073 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 01:49:56,073 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 01:49:56,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:49:56,073 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_all_down [2021-11-21 01:49:56,073 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_all_down [2021-11-21 01:49:56,074 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-21 01:49:56,074 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-21 01:49:56,074 INFO L130 BoogieDeclarations]: Found specification of procedure __gm_phy_read [2021-11-21 01:49:56,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __gm_phy_read [2021-11-21 01:49:56,074 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 01:49:56,075 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 01:49:56,075 INFO L130 BoogieDeclarations]: Found specification of procedure pci_find_capability [2021-11-21 01:49:56,075 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_find_capability [2021-11-21 01:49:56,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 01:49:56,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 01:49:56,076 INFO L130 BoogieDeclarations]: Found specification of procedure gma_write16 [2021-11-21 01:49:56,076 INFO L138 BoogieDeclarations]: Found implementation of procedure gma_write16 [2021-11-21 01:49:56,076 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-21 01:49:56,076 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-21 01:49:56,076 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_next_rx [2021-11-21 01:49:56,077 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_next_rx [2021-11-21 01:49:56,077 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-21 01:49:56,077 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-21 01:49:56,077 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_irq [2021-11-21 01:49:56,077 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_irq [2021-11-21 01:49:56,078 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_get_eeprom_len [2021-11-21 01:49:56,078 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_get_eeprom_len [2021-11-21 01:49:56,078 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 01:49:56,078 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 01:49:56,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_79 [2021-11-21 01:49:56,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_79 [2021-11-21 01:49:56,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:49:56,079 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_us2clk [2021-11-21 01:49:56,079 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_us2clk [2021-11-21 01:49:56,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:49:56,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:49:56,080 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2021-11-21 01:49:56,080 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2021-11-21 01:49:56,080 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-11-21 01:49:56,080 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-11-21 01:49:56,080 INFO L130 BoogieDeclarations]: Found specification of procedure device_may_wakeup [2021-11-21 01:49:56,081 INFO L138 BoogieDeclarations]: Found implementation of procedure device_may_wakeup [2021-11-21 01:49:56,081 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 01:49:56,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 01:49:56,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2021-11-21 01:49:56,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2021-11-21 01:49:56,082 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-11-21 01:49:56,082 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-11-21 01:49:56,082 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_qset [2021-11-21 01:49:56,082 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_qset [2021-11-21 01:49:56,082 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_mhz [2021-11-21 01:49:56,083 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_mhz [2021-11-21 01:49:56,083 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 01:49:56,083 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 01:49:56,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:49:56,083 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:49:56,084 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-21 01:49:56,084 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-21 01:49:56,084 INFO L130 BoogieDeclarations]: Found specification of procedure get_stats32 [2021-11-21 01:49:56,084 INFO L138 BoogieDeclarations]: Found implementation of procedure get_stats32 [2021-11-21 01:49:56,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:49:56,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:49:56,085 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 01:49:56,085 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 01:49:56,085 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_supported_modes [2021-11-21 01:49:56,085 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_supported_modes [2021-11-21 01:49:56,086 INFO L130 BoogieDeclarations]: Found specification of procedure gm_phy_read [2021-11-21 01:49:56,086 INFO L138 BoogieDeclarations]: Found implementation of procedure gm_phy_read [2021-11-21 01:49:56,086 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_alloc [2021-11-21 01:49:56,086 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_alloc [2021-11-21 01:49:56,086 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2021-11-21 01:49:56,087 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2021-11-21 01:49:56,087 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_tx_unlock [2021-11-21 01:49:56,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_tx_unlock [2021-11-21 01:49:56,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:49:56,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:49:56,088 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_show_addr [2021-11-21 01:49:56,088 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_show_addr [2021-11-21 01:49:56,088 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-21 01:49:56,088 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-21 01:49:56,088 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_close [2021-11-21 01:49:56,089 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_close [2021-11-21 01:49:56,089 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 01:49:56,089 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 01:49:56,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:49:56,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:49:56,090 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_start [2021-11-21 01:49:56,090 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_start [2021-11-21 01:49:56,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:49:56,090 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2021-11-21 01:49:56,090 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2021-11-21 01:49:56,091 INFO L130 BoogieDeclarations]: Found specification of procedure get_stats64 [2021-11-21 01:49:56,091 INFO L138 BoogieDeclarations]: Found implementation of procedure get_stats64 [2021-11-21 01:49:56,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-21 01:49:56,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-21 01:49:56,091 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-21 01:49:56,092 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-21 01:49:56,092 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:49:56,092 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:49:56,092 INFO L130 BoogieDeclarations]: Found specification of procedure pci_is_pcie [2021-11-21 01:49:56,092 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_is_pcie [2021-11-21 01:49:56,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:49:56,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-21 01:49:56,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-21 01:49:56,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:49:56,093 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 01:49:56,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 01:49:56,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_80 [2021-11-21 01:49:56,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_80 [2021-11-21 01:49:56,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:49:56,094 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:49:56,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 01:49:56,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 01:49:56,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:49:56,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:49:56,095 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_hw_up [2021-11-21 01:49:56,095 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_hw_up [2021-11-21 01:49:56,096 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-11-21 01:49:56,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-11-21 01:49:56,096 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_tx_unmap [2021-11-21 01:49:56,096 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_tx_unmap [2021-11-21 01:49:56,096 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_put_idx [2021-11-21 01:49:56,097 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_put_idx [2021-11-21 01:49:56,097 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:49:56,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:49:56,097 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_dma_map [2021-11-21 01:49:56,097 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_dma_map [2021-11-21 01:49:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:49:56,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:49:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_phy_power_up [2021-11-21 01:49:56,098 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_phy_power_up [2021-11-21 01:49:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_phy_init [2021-11-21 01:49:56,098 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_phy_init [2021-11-21 01:49:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-21 01:49:56,099 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-21 01:49:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_tx_complete [2021-11-21 01:49:56,099 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_tx_complete [2021-11-21 01:49:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2021-11-21 01:49:56,100 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2021-11-21 01:49:56,100 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-21 01:49:56,100 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-21 01:49:56,100 INFO L130 BoogieDeclarations]: Found specification of procedure gma_read16 [2021-11-21 01:49:56,100 INFO L138 BoogieDeclarations]: Found implementation of procedure gma_read16 [2021-11-21 01:49:56,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:49:56,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:49:56,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:49:56,101 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_all_up [2021-11-21 01:49:56,101 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_all_up [2021-11-21 01:49:56,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:49:56,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:49:56,102 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_tx_timeout [2021-11-21 01:49:56,102 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_tx_timeout [2021-11-21 01:49:56,102 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-21 01:49:56,103 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-21 01:49:56,103 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_wol_supported [2021-11-21 01:49:56,103 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_wol_supported [2021-11-21 01:49:56,103 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_pci_write32 [2021-11-21 01:49:56,103 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_pci_write32 [2021-11-21 01:49:56,103 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2021-11-21 01:49:56,104 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2021-11-21 01:49:56,104 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_submit [2021-11-21 01:49:56,104 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_submit [2021-11-21 01:49:56,104 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-11-21 01:49:56,104 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-11-21 01:49:56,105 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-21 01:49:56,105 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-21 01:49:56,105 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_vlan_mode [2021-11-21 01:49:56,105 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_vlan_mode [2021-11-21 01:49:56,105 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_read8 [2021-11-21 01:49:56,105 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_read8 [2021-11-21 01:49:56,106 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_update_begin [2021-11-21 01:49:56,106 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_update_begin [2021-11-21 01:49:56,106 INFO L130 BoogieDeclarations]: Found specification of procedure gma_read32 [2021-11-21 01:49:56,106 INFO L138 BoogieDeclarations]: Found implementation of procedure gma_read32 [2021-11-21 01:49:56,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_phy_lock_of_sky2_port [2021-11-21 01:49:56,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_phy_lock_of_sky2_port [2021-11-21 01:49:56,107 INFO L130 BoogieDeclarations]: Found specification of procedure gma_set_addr [2021-11-21 01:49:56,107 INFO L138 BoogieDeclarations]: Found implementation of procedure gma_set_addr [2021-11-21 01:49:56,107 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-21 01:49:56,107 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-21 01:49:56,108 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2021-11-21 01:49:56,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2021-11-21 01:49:56,108 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 01:49:56,108 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 01:49:56,108 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-21 01:49:56,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-21 01:49:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 01:49:56,109 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 01:49:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:49:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_nway_reset [2021-11-21 01:49:56,110 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_nway_reset [2021-11-21 01:49:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 01:49:56,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 01:49:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-21 01:49:56,111 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-21 01:49:56,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-21 01:49:56,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-21 01:49:56,111 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-21 01:49:56,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-21 01:49:56,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-21 01:49:56,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-21 01:49:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:49:56,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:49:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure tx_avail [2021-11-21 01:49:56,112 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_avail [2021-11-21 01:49:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_unmap_skb [2021-11-21 01:49:56,113 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_unmap_skb [2021-11-21 01:49:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 01:49:56,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 01:49:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_clk2us [2021-11-21 01:49:56,114 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_clk2us [2021-11-21 01:49:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_set_tx_stfwd [2021-11-21 01:49:56,114 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_set_tx_stfwd [2021-11-21 01:49:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_enable_rx_tx [2021-11-21 01:49:56,114 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_enable_rx_tx [2021-11-21 01:49:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 01:49:56,115 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 01:49:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2021-11-21 01:49:56,115 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2021-11-21 01:49:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_sky2_cleanup_module_22_2 [2021-11-21 01:49:56,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_sky2_cleanup_module_22_2 [2021-11-21 01:49:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-21 01:49:56,116 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-21 01:49:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_setup_irq [2021-11-21 01:49:56,116 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_setup_irq [2021-11-21 01:49:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:49:56,117 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:49:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-11-21 01:49:56,117 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-11-21 01:49:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-21 01:49:56,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-21 01:49:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_is_copper [2021-11-21 01:49:56,118 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_is_copper [2021-11-21 01:49:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 01:49:56,118 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 01:49:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_suspend [2021-11-21 01:49:56,119 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_suspend [2021-11-21 01:49:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_2_6 [2021-11-21 01:49:56,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_2_6 [2021-11-21 01:49:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-21 01:49:56,119 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-21 01:49:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_write16 [2021-11-21 01:49:56,120 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_write16 [2021-11-21 01:49:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:49:56,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:49:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-21 01:49:56,120 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-21 01:49:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_write8 [2021-11-21 01:49:56,121 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_write8 [2021-11-21 01:49:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure gm_phy_write [2021-11-21 01:49:56,121 INFO L138 BoogieDeclarations]: Found implementation of procedure gm_phy_write [2021-11-21 01:49:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2021-11-21 01:49:56,121 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2021-11-21 01:49:56,122 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 01:49:56,122 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 01:49:56,122 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_write32 [2021-11-21 01:49:56,122 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_write32 [2021-11-21 01:49:56,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:49:56,123 INFO L130 BoogieDeclarations]: Found specification of procedure gma_read64 [2021-11-21 01:49:56,123 INFO L138 BoogieDeclarations]: Found implementation of procedure gma_read64 [2021-11-21 01:49:56,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:49:56,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:49:56,123 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-21 01:49:56,123 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-21 01:49:56,124 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_open [2021-11-21 01:49:56,124 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_open [2021-11-21 01:49:56,124 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-21 01:49:57,541 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:49:57,546 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:49:57,684 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:50:12,668 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 01:50:12,846 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:50:15,523 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:50:15,523 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-21 01:50:15,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:50:15 BoogieIcfgContainer [2021-11-21 01:50:15,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:50:15,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:50:15,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:50:15,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:50:15,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:49:45" (1/3) ... [2021-11-21 01:50:15,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9265c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:50:15, skipping insertion in model container [2021-11-21 01:50:15,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:54" (2/3) ... [2021-11-21 01:50:15,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9265c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:50:15, skipping insertion in model container [2021-11-21 01:50:15,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:50:15" (3/3) ... [2021-11-21 01:50:15,542 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i [2021-11-21 01:50:15,547 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:50:15,547 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 01:50:15,606 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:50:15,612 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 [2021-11-21 01:50:15,613 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 01:50:15,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 3404 states, 1943 states have (on average 1.3113741636644365) internal successors, (2548), 2024 states have internal predecessors, (2548), 1244 states have call successors, (1244), 216 states have call predecessors, (1244), 215 states have return successors, (1234), 1209 states have call predecessors, (1234), 1234 states have call successors, (1234) [2021-11-21 01:50:15,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2021-11-21 01:50:15,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:15,735 INFO L514 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:15,735 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)] === [2021-11-21 01:50:15,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:15,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1080043505, now seen corresponding path program 1 times [2021-11-21 01:50:15,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:15,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721761212] [2021-11-21 01:50:15,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:15,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4032 trivial. 0 not checked. [2021-11-21 01:50:17,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:17,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721761212] [2021-11-21 01:50:17,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721761212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:17,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:17,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:50:17,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976002388] [2021-11-21 01:50:17,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:17,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:50:17,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:17,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:50:17,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:17,208 INFO L87 Difference]: Start difference. First operand has 3404 states, 1943 states have (on average 1.3113741636644365) internal successors, (2548), 2024 states have internal predecessors, (2548), 1244 states have call successors, (1244), 216 states have call predecessors, (1244), 215 states have return successors, (1234), 1209 states have call predecessors, (1234), 1234 states have call successors, (1234) Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 01:50:22,834 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:24,728 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:25,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:25,327 INFO L93 Difference]: Finished difference Result 9936 states and 14877 transitions. [2021-11-21 01:50:25,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:50:25,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 343 [2021-11-21 01:50:25,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:25,415 INFO L225 Difference]: With dead ends: 9936 [2021-11-21 01:50:25,415 INFO L226 Difference]: Without dead ends: 6583 [2021-11-21 01:50:25,452 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 [2021-11-21 01:50:25,455 INFO L933 BasicCegarLoop]: 5555 mSDtfsCounter, 4769 mSDsluCounter, 4932 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4771 SdHoareTripleChecker+Valid, 9898 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:25,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4771 Valid, 9898 Invalid, 1240 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 1230 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-11-21 01:50:25,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2021-11-21 01:50:25,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 6579. [2021-11-21 01:50:25,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6579 states, 3771 states have (on average 1.3097321665340758) internal successors, (4939), 3931 states have internal predecessors, (4939), 2381 states have call successors, (2381), 426 states have call predecessors, (2381), 424 states have return successors, (2377), 2327 states have call predecessors, (2377), 2377 states have call successors, (2377) [2021-11-21 01:50:26,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6579 states to 6579 states and 9697 transitions. [2021-11-21 01:50:26,072 INFO L78 Accepts]: Start accepts. Automaton has 6579 states and 9697 transitions. Word has length 343 [2021-11-21 01:50:26,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:26,075 INFO L470 AbstractCegarLoop]: Abstraction has 6579 states and 9697 transitions. [2021-11-21 01:50:26,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 01:50:26,075 INFO L276 IsEmpty]: Start isEmpty. Operand 6579 states and 9697 transitions. [2021-11-21 01:50:26,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2021-11-21 01:50:26,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:26,094 INFO L514 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:26,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:50:26,101 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)] === [2021-11-21 01:50:26,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:26,111 INFO L85 PathProgramCache]: Analyzing trace with hash 139948868, now seen corresponding path program 1 times [2021-11-21 01:50:26,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:26,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997673957] [2021-11-21 01:50:26,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:26,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:26,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4032 trivial. 0 not checked. [2021-11-21 01:50:26,865 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:26,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997673957] [2021-11-21 01:50:26,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997673957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:26,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:26,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:50:26,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420377619] [2021-11-21 01:50:26,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:26,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:50:26,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:26,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:50:26,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:26,871 INFO L87 Difference]: Start difference. First operand 6579 states and 9697 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 01:50:32,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:35,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:35,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:35,730 INFO L93 Difference]: Finished difference Result 15833 states and 23304 transitions. [2021-11-21 01:50:35,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:50:35,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 370 [2021-11-21 01:50:35,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:35,816 INFO L225 Difference]: With dead ends: 15833 [2021-11-21 01:50:35,816 INFO L226 Difference]: Without dead ends: 9319 [2021-11-21 01:50:35,858 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 [2021-11-21 01:50:35,859 INFO L933 BasicCegarLoop]: 5455 mSDtfsCounter, 4392 mSDsluCounter, 4921 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4394 SdHoareTripleChecker+Valid, 9788 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:35,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4394 Valid, 9788 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1258 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-11-21 01:50:35,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9319 states. [2021-11-21 01:50:36,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9319 to 9291. [2021-11-21 01:50:36,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9291 states, 5328 states have (on average 1.305367867867868) internal successors, (6955), 5551 states have internal predecessors, (6955), 3342 states have call successors, (3342), 622 states have call predecessors, (3342), 618 states have return successors, (3338), 3260 states have call predecessors, (3338), 3338 states have call successors, (3338) [2021-11-21 01:50:36,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 13635 transitions. [2021-11-21 01:50:36,668 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 13635 transitions. Word has length 370 [2021-11-21 01:50:36,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:36,674 INFO L470 AbstractCegarLoop]: Abstraction has 9291 states and 13635 transitions. [2021-11-21 01:50:36,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 01:50:36,677 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 13635 transitions. [2021-11-21 01:50:36,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2021-11-21 01:50:36,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:36,693 INFO L514 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:36,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:50:36,694 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)] === [2021-11-21 01:50:36,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:36,695 INFO L85 PathProgramCache]: Analyzing trace with hash 702427115, now seen corresponding path program 1 times [2021-11-21 01:50:36,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:36,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599523726] [2021-11-21 01:50:36,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:36,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:37,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4032 trivial. 0 not checked. [2021-11-21 01:50:37,185 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:37,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599523726] [2021-11-21 01:50:37,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599523726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:37,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:37,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:50:37,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113502722] [2021-11-21 01:50:37,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:37,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:50:37,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:37,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:50:37,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:37,190 INFO L87 Difference]: Start difference. First operand 9291 states and 13635 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 01:50:42,998 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:44,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:44,601 INFO L93 Difference]: Finished difference Result 27167 states and 39870 transitions. [2021-11-21 01:50:44,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:50:44,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 371 [2021-11-21 01:50:44,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:44,757 INFO L225 Difference]: With dead ends: 27167 [2021-11-21 01:50:44,758 INFO L226 Difference]: Without dead ends: 17941 [2021-11-21 01:50:44,815 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 [2021-11-21 01:50:44,816 INFO L933 BasicCegarLoop]: 6399 mSDtfsCounter, 4603 mSDsluCounter, 4895 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4605 SdHoareTripleChecker+Valid, 10720 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:44,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4605 Valid, 10720 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1411 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2021-11-21 01:50:44,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17941 states. [2021-11-21 01:50:46,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17941 to 17907. [2021-11-21 01:50:46,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17907 states, 10262 states have (on average 1.299649191190801) internal successors, (13337), 10692 states have internal predecessors, (13337), 6435 states have call successors, (6435), 1215 states have call predecessors, (6435), 1207 states have return successors, (6431), 6278 states have call predecessors, (6431), 6431 states have call successors, (6431) [2021-11-21 01:50:46,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17907 states to 17907 states and 26203 transitions. [2021-11-21 01:50:46,342 INFO L78 Accepts]: Start accepts. Automaton has 17907 states and 26203 transitions. Word has length 371 [2021-11-21 01:50:46,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:46,344 INFO L470 AbstractCegarLoop]: Abstraction has 17907 states and 26203 transitions. [2021-11-21 01:50:46,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 01:50:46,344 INFO L276 IsEmpty]: Start isEmpty. Operand 17907 states and 26203 transitions. [2021-11-21 01:50:46,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-11-21 01:50:46,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:46,364 INFO L514 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:46,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:50:46,365 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)] === [2021-11-21 01:50:46,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:46,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1479964069, now seen corresponding path program 1 times [2021-11-21 01:50:46,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:46,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228109429] [2021-11-21 01:50:46,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:46,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:46,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4032 trivial. 0 not checked. [2021-11-21 01:50:46,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:46,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228109429] [2021-11-21 01:50:46,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228109429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:46,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:46,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:50:46,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803407142] [2021-11-21 01:50:46,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:46,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:50:46,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:46,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:50:46,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:46,877 INFO L87 Difference]: Start difference. First operand 17907 states and 26203 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 01:50:53,514 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:54,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:54,029 INFO L93 Difference]: Finished difference Result 43514 states and 63229 transitions. [2021-11-21 01:50:54,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:50:54,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 373 [2021-11-21 01:50:54,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:54,173 INFO L225 Difference]: With dead ends: 43514 [2021-11-21 01:50:54,173 INFO L226 Difference]: Without dead ends: 25672 [2021-11-21 01:50:54,241 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 [2021-11-21 01:50:54,246 INFO L933 BasicCegarLoop]: 5363 mSDtfsCounter, 3688 mSDsluCounter, 4861 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3689 SdHoareTripleChecker+Valid, 9679 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:54,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3689 Valid, 9679 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1274 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-11-21 01:50:54,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25672 states. [2021-11-21 01:50:55,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25672 to 25639. [2021-11-21 01:50:55,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25639 states, 14421 states have (on average 1.2765411552596908) internal successors, (18409), 15040 states have internal predecessors, (18409), 9317 states have call successors, (9317), 1915 states have call predecessors, (9317), 1898 states have return successors, (9323), 9080 states have call predecessors, (9323), 9313 states have call successors, (9323) [2021-11-21 01:50:56,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25639 states to 25639 states and 37049 transitions. [2021-11-21 01:50:56,039 INFO L78 Accepts]: Start accepts. Automaton has 25639 states and 37049 transitions. Word has length 373 [2021-11-21 01:50:56,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:56,041 INFO L470 AbstractCegarLoop]: Abstraction has 25639 states and 37049 transitions. [2021-11-21 01:50:56,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 01:50:56,042 INFO L276 IsEmpty]: Start isEmpty. Operand 25639 states and 37049 transitions. [2021-11-21 01:50:56,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2021-11-21 01:50:56,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:56,053 INFO L514 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 32, 32, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:56,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:50:56,054 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)] === [2021-11-21 01:50:56,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:56,055 INFO L85 PathProgramCache]: Analyzing trace with hash 873557452, now seen corresponding path program 1 times [2021-11-21 01:50:56,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:56,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882950797] [2021-11-21 01:50:56,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:56,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:56,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4035 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4035 trivial. 0 not checked. [2021-11-21 01:50:56,686 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:56,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882950797] [2021-11-21 01:50:56,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882950797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:56,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:56,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:50:56,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265601328] [2021-11-21 01:50:56,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:56,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:50:56,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:56,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:50:56,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:56,690 INFO L87 Difference]: Start difference. First operand 25639 states and 37049 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-21 01:51:03,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:04,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:04,218 INFO L93 Difference]: Finished difference Result 66726 states and 96545 transitions. [2021-11-21 01:51:04,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:51:04,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 395 [2021-11-21 01:51:04,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:04,493 INFO L225 Difference]: With dead ends: 66726 [2021-11-21 01:51:04,493 INFO L226 Difference]: Without dead ends: 41152 [2021-11-21 01:51:04,630 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 [2021-11-21 01:51:04,633 INFO L933 BasicCegarLoop]: 5833 mSDtfsCounter, 4750 mSDsluCounter, 4945 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4752 SdHoareTripleChecker+Valid, 10185 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:04,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4752 Valid, 10185 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1322 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2021-11-21 01:51:04,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41152 states. [2021-11-21 01:51:07,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41152 to 41108. [2021-11-21 01:51:07,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41108 states, 23352 states have (on average 1.2815176430284343) internal successors, (29926), 24356 states have internal predecessors, (29926), 14753 states have call successors, (14753), 3029 states have call predecessors, (14753), 3000 states have return successors, (14769), 14353 states have call predecessors, (14769), 14749 states have call successors, (14769) [2021-11-21 01:51:07,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41108 states to 41108 states and 59448 transitions. [2021-11-21 01:51:07,684 INFO L78 Accepts]: Start accepts. Automaton has 41108 states and 59448 transitions. Word has length 395 [2021-11-21 01:51:07,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:07,685 INFO L470 AbstractCegarLoop]: Abstraction has 41108 states and 59448 transitions. [2021-11-21 01:51:07,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-21 01:51:07,686 INFO L276 IsEmpty]: Start isEmpty. Operand 41108 states and 59448 transitions. [2021-11-21 01:51:07,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2021-11-21 01:51:07,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:07,695 INFO L514 BasicCegarLoop]: trace histogram [37, 33, 33, 33, 33, 33, 33, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:51:07,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:51:07,696 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:51:07,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:07,697 INFO L85 PathProgramCache]: Analyzing trace with hash 155059220, now seen corresponding path program 1 times [2021-11-21 01:51:07,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:51:07,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780972366] [2021-11-21 01:51:07,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:07,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:51:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4529 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4529 trivial. 0 not checked. [2021-11-21 01:51:08,394 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:51:08,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780972366] [2021-11-21 01:51:08,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780972366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:51:08,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:51:08,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:51:08,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699405857] [2021-11-21 01:51:08,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:51:08,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:51:08,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:51:08,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:51:08,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:51:08,397 INFO L87 Difference]: Start difference. First operand 41108 states and 59448 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-21 01:51:14,014 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:17,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:18,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:18,075 INFO L93 Difference]: Finished difference Result 41423 states and 59731 transitions. [2021-11-21 01:51:18,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:51:18,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 399 [2021-11-21 01:51:18,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:18,263 INFO L225 Difference]: With dead ends: 41423 [2021-11-21 01:51:18,263 INFO L226 Difference]: Without dead ends: 41421 [2021-11-21 01:51:18,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:51:18,286 INFO L933 BasicCegarLoop]: 4396 mSDtfsCounter, 4827 mSDsluCounter, 10070 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4843 SdHoareTripleChecker+Valid, 13244 SdHoareTripleChecker+Invalid, 1854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:18,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4843 Valid, 13244 Invalid, 1854 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1851 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2021-11-21 01:51:18,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41421 states. [2021-11-21 01:51:20,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41421 to 41419. [2021-11-21 01:51:20,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41419 states, 23535 states have (on average 1.2806458466114299) internal successors, (30140), 24555 states have internal predecessors, (30140), 14786 states have call successors, (14786), 3124 states have call predecessors, (14786), 3095 states have return successors, (14802), 14386 states have call predecessors, (14802), 14782 states have call successors, (14802) [2021-11-21 01:51:20,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41419 states to 41419 states and 59728 transitions. [2021-11-21 01:51:20,682 INFO L78 Accepts]: Start accepts. Automaton has 41419 states and 59728 transitions. Word has length 399 [2021-11-21 01:51:20,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:20,683 INFO L470 AbstractCegarLoop]: Abstraction has 41419 states and 59728 transitions. [2021-11-21 01:51:20,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-21 01:51:20,683 INFO L276 IsEmpty]: Start isEmpty. Operand 41419 states and 59728 transitions. [2021-11-21 01:51:20,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-11-21 01:51:20,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:20,691 INFO L514 BasicCegarLoop]: trace histogram [37, 33, 33, 33, 33, 33, 33, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:51:20,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:51:20,692 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)] === [2021-11-21 01:51:20,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:20,692 INFO L85 PathProgramCache]: Analyzing trace with hash -652159693, now seen corresponding path program 1 times [2021-11-21 01:51:20,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:51:20,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530749717] [2021-11-21 01:51:20,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:20,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:51:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:21,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4536 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4534 trivial. 0 not checked. [2021-11-21 01:51:21,321 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:51:21,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530749717] [2021-11-21 01:51:21,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530749717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:51:21,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:51:21,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:51:21,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408341622] [2021-11-21 01:51:21,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:51:21,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:51:21,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:51:21,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:51:21,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:51:21,324 INFO L87 Difference]: Start difference. First operand 41419 states and 59728 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-21 01:51:25,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:28,113 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:29,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:29,846 INFO L93 Difference]: Finished difference Result 41425 states and 59733 transitions. [2021-11-21 01:51:29,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:51:29,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 407 [2021-11-21 01:51:29,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:30,082 INFO L225 Difference]: With dead ends: 41425 [2021-11-21 01:51:30,082 INFO L226 Difference]: Without dead ends: 41423 [2021-11-21 01:51:30,094 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 [2021-11-21 01:51:30,095 INFO L933 BasicCegarLoop]: 4377 mSDtfsCounter, 4875 mSDsluCounter, 9944 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4888 SdHoareTripleChecker+Valid, 13109 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1839 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:30,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4888 Valid, 13109 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1839 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-11-21 01:51:30,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41423 states. [2021-11-21 01:51:31,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41423 to 41423. [2021-11-21 01:51:31,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41423 states, 23538 states have (on average 1.2806100773217775) internal successors, (30143), 24558 states have internal predecessors, (30143), 14786 states have call successors, (14786), 3125 states have call predecessors, (14786), 3096 states have return successors, (14802), 14386 states have call predecessors, (14802), 14782 states have call successors, (14802) [2021-11-21 01:51:32,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41423 states to 41423 states and 59731 transitions. [2021-11-21 01:51:32,058 INFO L78 Accepts]: Start accepts. Automaton has 41423 states and 59731 transitions. Word has length 407 [2021-11-21 01:51:32,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:32,059 INFO L470 AbstractCegarLoop]: Abstraction has 41423 states and 59731 transitions. [2021-11-21 01:51:32,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-21 01:51:32,059 INFO L276 IsEmpty]: Start isEmpty. Operand 41423 states and 59731 transitions. [2021-11-21 01:51:32,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2021-11-21 01:51:32,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:32,068 INFO L514 BasicCegarLoop]: trace histogram [37, 33, 33, 33, 33, 33, 33, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:51:32,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:51:32,068 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)] === [2021-11-21 01:51:32,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:32,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1116884492, now seen corresponding path program 1 times [2021-11-21 01:51:32,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:51:32,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891934710] [2021-11-21 01:51:32,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:32,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:51:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:32,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4537 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4533 trivial. 0 not checked. [2021-11-21 01:51:32,884 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:51:32,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891934710] [2021-11-21 01:51:32,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891934710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:51:32,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:51:32,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:51:32,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350853068] [2021-11-21 01:51:32,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:51:32,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:51:32,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:51:32,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:51:32,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:51:32,888 INFO L87 Difference]: Start difference. First operand 41423 states and 59731 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-21 01:51:40,249 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:40,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:40,671 INFO L93 Difference]: Finished difference Result 41429 states and 59736 transitions. [2021-11-21 01:51:40,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:51:40,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 409 [2021-11-21 01:51:40,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:40,809 INFO L225 Difference]: With dead ends: 41429 [2021-11-21 01:51:40,809 INFO L226 Difference]: Without dead ends: 41427 [2021-11-21 01:51:40,822 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 [2021-11-21 01:51:40,823 INFO L933 BasicCegarLoop]: 4377 mSDtfsCounter, 4876 mSDsluCounter, 9944 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4888 SdHoareTripleChecker+Valid, 13109 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1839 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:40,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4888 Valid, 13109 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1839 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-21 01:51:40,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41427 states. [2021-11-21 01:51:42,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41427 to 41427. [2021-11-21 01:51:42,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41427 states, 23541 states have (on average 1.2805743171488042) internal successors, (30146), 24561 states have internal predecessors, (30146), 14786 states have call successors, (14786), 3126 states have call predecessors, (14786), 3097 states have return successors, (14802), 14386 states have call predecessors, (14802), 14782 states have call successors, (14802) [2021-11-21 01:51:42,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41427 states to 41427 states and 59734 transitions. [2021-11-21 01:51:42,799 INFO L78 Accepts]: Start accepts. Automaton has 41427 states and 59734 transitions. Word has length 409 [2021-11-21 01:51:42,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:42,800 INFO L470 AbstractCegarLoop]: Abstraction has 41427 states and 59734 transitions. [2021-11-21 01:51:42,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-21 01:51:42,801 INFO L276 IsEmpty]: Start isEmpty. Operand 41427 states and 59734 transitions. [2021-11-21 01:51:42,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2021-11-21 01:51:42,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:42,811 INFO L514 BasicCegarLoop]: trace histogram [37, 33, 33, 33, 33, 33, 33, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:51:42,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:51:42,811 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)] === [2021-11-21 01:51:42,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:42,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1772732499, now seen corresponding path program 1 times [2021-11-21 01:51:42,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:51:42,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59129987] [2021-11-21 01:51:42,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:42,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:51:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4552 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4546 trivial. 0 not checked. [2021-11-21 01:51:43,591 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:51:43,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59129987] [2021-11-21 01:51:43,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59129987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:51:43,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:51:43,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:51:43,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159927311] [2021-11-21 01:51:43,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:51:43,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:51:43,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:51:43,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:51:43,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:51:43,594 INFO L87 Difference]: Start difference. First operand 41427 states and 59734 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-21 01:51:48,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:48,538 INFO L93 Difference]: Finished difference Result 41433 states and 59739 transitions. [2021-11-21 01:51:48,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:51:48,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 417 [2021-11-21 01:51:48,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:48,707 INFO L225 Difference]: With dead ends: 41433 [2021-11-21 01:51:48,707 INFO L226 Difference]: Without dead ends: 41431 [2021-11-21 01:51:48,727 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 [2021-11-21 01:51:48,728 INFO L933 BasicCegarLoop]: 4377 mSDtfsCounter, 4875 mSDsluCounter, 9944 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4886 SdHoareTripleChecker+Valid, 13109 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:48,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4886 Valid, 13109 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-21 01:51:48,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41431 states. [2021-11-21 01:51:50,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41431 to 41431. [2021-11-21 01:51:50,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41431 states, 23544 states have (on average 1.2805385660890247) internal successors, (30149), 24564 states have internal predecessors, (30149), 14786 states have call successors, (14786), 3127 states have call predecessors, (14786), 3098 states have return successors, (14802), 14386 states have call predecessors, (14802), 14782 states have call successors, (14802) [2021-11-21 01:51:51,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41431 states to 41431 states and 59737 transitions. [2021-11-21 01:51:51,078 INFO L78 Accepts]: Start accepts. Automaton has 41431 states and 59737 transitions. Word has length 417 [2021-11-21 01:51:51,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:51,079 INFO L470 AbstractCegarLoop]: Abstraction has 41431 states and 59737 transitions. [2021-11-21 01:51:51,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-21 01:51:51,080 INFO L276 IsEmpty]: Start isEmpty. Operand 41431 states and 59737 transitions. [2021-11-21 01:51:51,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2021-11-21 01:51:51,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:51,091 INFO L514 BasicCegarLoop]: trace histogram [37, 33, 33, 33, 33, 33, 33, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:51:51,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:51:51,091 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)] === [2021-11-21 01:51:51,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:51,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1811432393, now seen corresponding path program 1 times [2021-11-21 01:51:51,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:51:51,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729600776] [2021-11-21 01:51:51,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:51,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:51:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:51,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4567 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4559 trivial. 0 not checked. [2021-11-21 01:51:51,633 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:51:51,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729600776] [2021-11-21 01:51:51,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729600776] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:51:51,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:51:51,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:51:51,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615813342] [2021-11-21 01:51:51,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:51:51,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:51:51,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:51:51,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:51:51,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:51:51,636 INFO L87 Difference]: Start difference. First operand 41431 states and 59737 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-21 01:51:59,577 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:52:00,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:00,019 INFO L93 Difference]: Finished difference Result 41437 states and 59742 transitions. [2021-11-21 01:52:00,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:52:00,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 423 [2021-11-21 01:52:00,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:00,172 INFO L225 Difference]: With dead ends: 41437 [2021-11-21 01:52:00,172 INFO L226 Difference]: Without dead ends: 41435 [2021-11-21 01:52:00,193 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 [2021-11-21 01:52:00,194 INFO L933 BasicCegarLoop]: 4378 mSDtfsCounter, 4839 mSDsluCounter, 9983 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4851 SdHoareTripleChecker+Valid, 13147 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:00,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4851 Valid, 13147 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1841 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2021-11-21 01:52:00,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41435 states. [2021-11-21 01:52:02,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41435 to 41435. [2021-11-21 01:52:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41435 states, 23547 states have (on average 1.2805028241389562) internal successors, (30152), 24567 states have internal predecessors, (30152), 14786 states have call successors, (14786), 3128 states have call predecessors, (14786), 3099 states have return successors, (14802), 14386 states have call predecessors, (14802), 14782 states have call successors, (14802) [2021-11-21 01:52:02,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41435 states to 41435 states and 59740 transitions. [2021-11-21 01:52:02,555 INFO L78 Accepts]: Start accepts. Automaton has 41435 states and 59740 transitions. Word has length 423 [2021-11-21 01:52:02,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:52:02,556 INFO L470 AbstractCegarLoop]: Abstraction has 41435 states and 59740 transitions. [2021-11-21 01:52:02,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-21 01:52:02,556 INFO L276 IsEmpty]: Start isEmpty. Operand 41435 states and 59740 transitions. [2021-11-21 01:52:02,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2021-11-21 01:52:02,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:52:02,568 INFO L514 BasicCegarLoop]: trace histogram [37, 33, 33, 33, 33, 33, 33, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:52:02,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:52:02,568 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)] === [2021-11-21 01:52:02,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:52:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash -293110703, now seen corresponding path program 1 times [2021-11-21 01:52:02,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:52:02,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522240727] [2021-11-21 01:52:02,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:02,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:52:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:52:03,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4579 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4569 trivial. 0 not checked. [2021-11-21 01:52:03,434 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:52:03,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522240727] [2021-11-21 01:52:03,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522240727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:52:03,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:52:03,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:52:03,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171919336] [2021-11-21 01:52:03,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:52:03,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:52:03,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:52:03,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:52:03,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:52:03,438 INFO L87 Difference]: Start difference. First operand 41435 states and 59740 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-21 01:52:09,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:09,426 INFO L93 Difference]: Finished difference Result 41441 states and 59745 transitions. [2021-11-21 01:52:09,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:52:09,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 424 [2021-11-21 01:52:09,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:09,564 INFO L225 Difference]: With dead ends: 41441 [2021-11-21 01:52:09,564 INFO L226 Difference]: Without dead ends: 41439 [2021-11-21 01:52:09,580 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 [2021-11-21 01:52:09,581 INFO L933 BasicCegarLoop]: 4377 mSDtfsCounter, 4876 mSDsluCounter, 9944 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4885 SdHoareTripleChecker+Valid, 13109 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:09,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4885 Valid, 13109 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-21 01:52:09,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41439 states. [2021-11-21 01:52:11,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41439 to 41439. [2021-11-21 01:52:11,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41439 states, 23550 states have (on average 1.2804670912951168) internal successors, (30155), 24570 states have internal predecessors, (30155), 14786 states have call successors, (14786), 3129 states have call predecessors, (14786), 3100 states have return successors, (14802), 14386 states have call predecessors, (14802), 14782 states have call successors, (14802) [2021-11-21 01:52:11,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41439 states to 41439 states and 59743 transitions. [2021-11-21 01:52:11,865 INFO L78 Accepts]: Start accepts. Automaton has 41439 states and 59743 transitions. Word has length 424 [2021-11-21 01:52:11,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:52:11,865 INFO L470 AbstractCegarLoop]: Abstraction has 41439 states and 59743 transitions. [2021-11-21 01:52:11,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-21 01:52:11,866 INFO L276 IsEmpty]: Start isEmpty. Operand 41439 states and 59743 transitions. [2021-11-21 01:52:11,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-21 01:52:11,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:52:11,880 INFO L514 BasicCegarLoop]: trace histogram [37, 33, 33, 33, 33, 33, 33, 7, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:52:11,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 01:52:11,880 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)] === [2021-11-21 01:52:11,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:52:11,881 INFO L85 PathProgramCache]: Analyzing trace with hash -88456238, now seen corresponding path program 1 times [2021-11-21 01:52:11,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:52:11,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340860245] [2021-11-21 01:52:11,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:11,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:52:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:52:12,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4606 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4594 trivial. 0 not checked. [2021-11-21 01:52:12,681 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:52:12,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340860245] [2021-11-21 01:52:12,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340860245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:52:12,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:52:12,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:52:12,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118004564] [2021-11-21 01:52:12,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:52:12,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:52:12,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:52:12,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:52:12,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:52:12,685 INFO L87 Difference]: Start difference. First operand 41439 states and 59743 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-21 01:52:20,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:52:21,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:21,054 INFO L93 Difference]: Finished difference Result 41445 states and 59748 transitions. [2021-11-21 01:52:21,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:52:21,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 432 [2021-11-21 01:52:21,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:21,225 INFO L225 Difference]: With dead ends: 41445 [2021-11-21 01:52:21,225 INFO L226 Difference]: Without dead ends: 41443 [2021-11-21 01:52:21,244 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 [2021-11-21 01:52:21,245 INFO L933 BasicCegarLoop]: 4378 mSDtfsCounter, 4839 mSDsluCounter, 9983 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4849 SdHoareTripleChecker+Valid, 13147 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:21,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4849 Valid, 13147 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1841 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-11-21 01:52:21,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41443 states. [2021-11-21 01:52:23,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41443 to 41443. [2021-11-21 01:52:23,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41443 states, 23553 states have (on average 1.280431367554027) internal successors, (30158), 24573 states have internal predecessors, (30158), 14786 states have call successors, (14786), 3130 states have call predecessors, (14786), 3101 states have return successors, (14802), 14386 states have call predecessors, (14802), 14782 states have call successors, (14802) [2021-11-21 01:52:23,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41443 states to 41443 states and 59746 transitions. [2021-11-21 01:52:23,607 INFO L78 Accepts]: Start accepts. Automaton has 41443 states and 59746 transitions. Word has length 432 [2021-11-21 01:52:23,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:52:23,608 INFO L470 AbstractCegarLoop]: Abstraction has 41443 states and 59746 transitions. [2021-11-21 01:52:23,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-21 01:52:23,608 INFO L276 IsEmpty]: Start isEmpty. Operand 41443 states and 59746 transitions. [2021-11-21 01:52:23,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-11-21 01:52:23,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:52:23,622 INFO L514 BasicCegarLoop]: trace histogram [37, 33, 33, 33, 33, 33, 33, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:52:23,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 01:52:23,622 INFO L402 AbstractCegarLoop]: === Iteration 13 === 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)] === [2021-11-21 01:52:23,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:52:23,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1051494944, now seen corresponding path program 1 times [2021-11-21 01:52:23,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:52:23,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105221096] [2021-11-21 01:52:23,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:23,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:52:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:52:24,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4521 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4518 trivial. 0 not checked. [2021-11-21 01:52:24,267 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:52:24,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105221096] [2021-11-21 01:52:24,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105221096] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:52:24,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:52:24,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:52:24,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532095431] [2021-11-21 01:52:24,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:52:24,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:52:24,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:52:24,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:52:24,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:52:24,270 INFO L87 Difference]: Start difference. First operand 41443 states and 59746 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 01:52:29,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:52:34,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:52:34,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:34,881 INFO L93 Difference]: Finished difference Result 100741 states and 145273 transitions. [2021-11-21 01:52:34,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:52:34,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 431 [2021-11-21 01:52:34,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:35,182 INFO L225 Difference]: With dead ends: 100741 [2021-11-21 01:52:35,183 INFO L226 Difference]: Without dead ends: 59703 [2021-11-21 01:52:35,499 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 [2021-11-21 01:52:35,499 INFO L933 BasicCegarLoop]: 6572 mSDtfsCounter, 4378 mSDsluCounter, 4928 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4380 SdHoareTripleChecker+Valid, 10909 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:35,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4380 Valid, 10909 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1510 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-11-21 01:52:35,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59703 states. [2021-11-21 01:52:38,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59703 to 59633. [2021-11-21 01:52:38,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59633 states, 33929 states have (on average 1.2798785699549058) internal successors, (43425), 35388 states have internal predecessors, (43425), 21221 states have call successors, (21221), 4526 states have call predecessors, (21221), 4480 states have return successors, (21241), 20634 states have call predecessors, (21241), 21217 states have call successors, (21241) [2021-11-21 01:52:38,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59633 states to 59633 states and 85887 transitions. [2021-11-21 01:52:38,822 INFO L78 Accepts]: Start accepts. Automaton has 59633 states and 85887 transitions. Word has length 431 [2021-11-21 01:52:38,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:52:38,823 INFO L470 AbstractCegarLoop]: Abstraction has 59633 states and 85887 transitions. [2021-11-21 01:52:38,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 01:52:38,823 INFO L276 IsEmpty]: Start isEmpty. Operand 59633 states and 85887 transitions. [2021-11-21 01:52:38,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2021-11-21 01:52:38,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:52:38,834 INFO L514 BasicCegarLoop]: trace histogram [37, 33, 33, 33, 33, 33, 33, 8, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:52:38,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 01:52:38,834 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)] === [2021-11-21 01:52:38,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:52:38,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1608251889, now seen corresponding path program 1 times [2021-11-21 01:52:38,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:52:38,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393139316] [2021-11-21 01:52:38,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:38,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:52:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:52:39,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4627 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4613 trivial. 0 not checked. [2021-11-21 01:52:39,300 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:52:39,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393139316] [2021-11-21 01:52:39,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393139316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:52:39,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:52:39,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:52:39,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299250497] [2021-11-21 01:52:39,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:52:39,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:52:39,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:52:39,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:52:39,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:52:39,303 INFO L87 Difference]: Start difference. First operand 59633 states and 85887 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-21 01:52:45,595 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:52:49,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:52:50,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:50,207 INFO L93 Difference]: Finished difference Result 59639 states and 85892 transitions. [2021-11-21 01:52:50,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:52:50,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 434 [2021-11-21 01:52:50,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:50,449 INFO L225 Difference]: With dead ends: 59639 [2021-11-21 01:52:50,449 INFO L226 Difference]: Without dead ends: 59637 [2021-11-21 01:52:50,474 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 [2021-11-21 01:52:50,475 INFO L933 BasicCegarLoop]: 4378 mSDtfsCounter, 4840 mSDsluCounter, 9983 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4849 SdHoareTripleChecker+Valid, 13147 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:50,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4849 Valid, 13147 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1841 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2021-11-21 01:52:50,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59637 states.