./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-via-via-rhine.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_61da4321-a3f6-4c98-9875-368064e67dab/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61da4321-a3f6-4c98-9875-368064e67dab/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_61da4321-a3f6-4c98-9875-368064e67dab/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61da4321-a3f6-4c98-9875-368064e67dab/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61da4321-a3f6-4c98-9875-368064e67dab/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_61da4321-a3f6-4c98-9875-368064e67dab/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 6eed6410a0dd7e708ffb27250b590aa2913bf9f742c15130caf6eadad29510cc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:53:15,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:53:15,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:53:15,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:53:15,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:53:15,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:53:15,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:53:15,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:53:15,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:53:15,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:53:15,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:53:15,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:53:15,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:53:15,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:53:15,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:53:15,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:53:15,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:53:15,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:53:15,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:53:15,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:53:15,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:53:15,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:53:15,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:53:15,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:53:15,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:53:15,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:53:15,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:53:15,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:53:15,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:53:15,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:53:15,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:53:15,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:53:15,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:53:15,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:53:15,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:53:15,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:53:15,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:53:15,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:53:15,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:53:15,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:53:15,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:53:15,175 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61da4321-a3f6-4c98-9875-368064e67dab/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:53:15,220 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:53:15,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:53:15,221 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:53:15,221 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:53:15,222 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:53:15,222 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:53:15,222 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:53:15,223 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:53:15,223 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:53:15,223 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:53:15,224 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:53:15,224 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:53:15,225 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:53:15,225 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:53:15,225 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:53:15,225 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:53:15,226 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:53:15,226 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:53:15,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:53:15,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:53:15,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:53:15,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:53:15,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:53:15,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:53:15,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:53:15,228 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:53:15,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:53:15,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:53:15,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:53:15,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:53:15,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:53:15,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:53:15,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:53:15,232 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:53:15,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:53:15,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:53:15,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:53:15,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:53:15,233 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_61da4321-a3f6-4c98-9875-368064e67dab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61da4321-a3f6-4c98-9875-368064e67dab/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6eed6410a0dd7e708ffb27250b590aa2913bf9f742c15130caf6eadad29510cc [2021-11-21 01:53:15,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:53:15,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:53:15,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:53:15,616 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:53:15,617 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:53:15,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61da4321-a3f6-4c98-9875-368064e67dab/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i [2021-11-21 01:53:15,698 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61da4321-a3f6-4c98-9875-368064e67dab/bin/utaipan-TEXQjIfE4P/data/566eeaf3a/753ada964df04e09a50a63b5fc21baa2/FLAG6037ca407 [2021-11-21 01:53:16,732 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:53:16,732 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61da4321-a3f6-4c98-9875-368064e67dab/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i [2021-11-21 01:53:16,823 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61da4321-a3f6-4c98-9875-368064e67dab/bin/utaipan-TEXQjIfE4P/data/566eeaf3a/753ada964df04e09a50a63b5fc21baa2/FLAG6037ca407 [2021-11-21 01:53:17,081 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61da4321-a3f6-4c98-9875-368064e67dab/bin/utaipan-TEXQjIfE4P/data/566eeaf3a/753ada964df04e09a50a63b5fc21baa2 [2021-11-21 01:53:17,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:53:17,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:53:17,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:53:17,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:53:17,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:53:17,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:53:17" (1/1) ... [2021-11-21 01:53:17,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8b9decd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:53:17, skipping insertion in model container [2021-11-21 01:53:17,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:53:17" (1/1) ... [2021-11-21 01:53:17,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:53:17,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:53:21,524 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_61da4321-a3f6-4c98-9875-368064e67dab/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404089,404102] [2021-11-21 01:53:21,528 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_61da4321-a3f6-4c98-9875-368064e67dab/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404258,404271] [2021-11-21 01:53:21,528 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_61da4321-a3f6-4c98-9875-368064e67dab/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404425,404438] [2021-11-21 01:53:21,529 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_61da4321-a3f6-4c98-9875-368064e67dab/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404593,404606] [2021-11-21 01:53:21,572 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:53:21,677 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:53:22,271 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_61da4321-a3f6-4c98-9875-368064e67dab/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404089,404102] [2021-11-21 01:53:22,272 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_61da4321-a3f6-4c98-9875-368064e67dab/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404258,404271] [2021-11-21 01:53:22,272 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_61da4321-a3f6-4c98-9875-368064e67dab/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404425,404438] [2021-11-21 01:53:22,273 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_61da4321-a3f6-4c98-9875-368064e67dab/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404593,404606] [2021-11-21 01:53:22,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:53:22,628 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:53:22,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:53:22 WrapperNode [2021-11-21 01:53:22,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:53:22,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:53:22,630 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:53:22,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:53:22,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:53:22" (1/1) ... [2021-11-21 01:53:22,805 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:53:22" (1/1) ... [2021-11-21 01:53:23,071 INFO L137 Inliner]: procedures = 559, calls = 2801, calls flagged for inlining = 291, calls inlined = 253, statements flattened = 5819 [2021-11-21 01:53:23,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:53:23,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:53:23,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:53:23,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:53:23,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:53:22" (1/1) ... [2021-11-21 01:53:23,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:53:22" (1/1) ... [2021-11-21 01:53:23,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:53:22" (1/1) ... [2021-11-21 01:53:23,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:53:22" (1/1) ... [2021-11-21 01:53:23,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:53:22" (1/1) ... [2021-11-21 01:53:23,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:53:22" (1/1) ... [2021-11-21 01:53:23,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:53:22" (1/1) ... [2021-11-21 01:53:23,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:53:23,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:53:23,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:53:23,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:53:23,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:53:22" (1/1) ... [2021-11-21 01:53:23,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:53:23,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61da4321-a3f6-4c98-9875-368064e67dab/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:53:23,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61da4321-a3f6-4c98-9875-368064e67dab/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:53:23,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61da4321-a3f6-4c98-9875-368064e67dab/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:53:23,443 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 01:53:23,444 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 01:53:23,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:53:23,444 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:53:23,444 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-21 01:53:23,445 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-21 01:53:23,445 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 01:53:23,445 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 01:53:23,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:53:23,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:53:23,446 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 01:53:23,446 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 01:53:23,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:53:23,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:53:23,446 INFO L130 BoogieDeclarations]: Found specification of procedure free_tbufs [2021-11-21 01:53:23,447 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tbufs [2021-11-21 01:53:23,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_80 [2021-11-21 01:53:23,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_80 [2021-11-21 01:53:23,447 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-21 01:53:23,447 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-21 01:53:23,447 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 01:53:23,448 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 01:53:23,448 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-21 01:53:23,448 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-21 01:53:23,448 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 01:53:23,448 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 01:53:23,449 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-21 01:53:23,449 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-21 01:53:23,449 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_poll [2021-11-21 01:53:23,449 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_poll [2021-11-21 01:53:23,449 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-21 01:53:23,450 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-21 01:53:23,450 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-21 01:53:23,450 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-21 01:53:23,450 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_low [2021-11-21 01:53:23,450 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_low [2021-11-21 01:53:23,451 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 01:53:23,451 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 01:53:23,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:53:23,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:53:23,451 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 01:53:23,451 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 01:53:23,452 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-21 01:53:23,452 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-21 01:53:23,452 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 01:53:23,452 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 01:53:23,452 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:53:23,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:53:23,453 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-21 01:53:23,453 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-21 01:53:23,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:53:23,453 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_62 [2021-11-21 01:53:23,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_62 [2021-11-21 01:53:23,454 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-21 01:53:23,454 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-21 01:53:23,454 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit [2021-11-21 01:53:23,454 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit [2021-11-21 01:53:23,455 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:53:23,455 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:53:23,455 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 01:53:23,455 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 01:53:23,455 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_rbufs [2021-11-21 01:53:23,455 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_rbufs [2021-11-21 01:53:23,456 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 01:53:23,456 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 01:53:23,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:53:23,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:53:23,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:53:23,457 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_interrupt [2021-11-21 01:53:23,457 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_interrupt [2021-11-21 01:53:23,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:53:23,457 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 01:53:23,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 01:53:23,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:53:23,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:53:23,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 01:53:23,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 01:53:23,458 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_disable [2021-11-21 01:53:23,458 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_disable [2021-11-21 01:53:23,459 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-11-21 01:53:23,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-11-21 01:53:23,459 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-21 01:53:23,459 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-21 01:53:23,459 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 01:53:23,459 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 01:53:23,460 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_carrier [2021-11-21 01:53:23,460 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_carrier [2021-11-21 01:53:23,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:53:23,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:53:23,460 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_shutdown [2021-11-21 01:53:23,461 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_shutdown [2021-11-21 01:53:23,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:53:23,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 01:53:23,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 01:53:23,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 01:53:23,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 01:53:23,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-21 01:53:23,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-21 01:53:23,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-21 01:53:23,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-21 01:53:23,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:53:23,462 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2021-11-21 01:53:23,463 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2021-11-21 01:53:23,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:53:23,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:53:23,463 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 01:53:23,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 01:53:23,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:53:23,464 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 01:53:23,464 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-21 01:53:23,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-21 01:53:23,464 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:53:23,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:53:23,465 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_rx_mode [2021-11-21 01:53:23,465 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_rx_mode [2021-11-21 01:53:23,465 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:53:23,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:53:23,465 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_rx_crc_and_missed_errord [2021-11-21 01:53:23,465 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_rx_crc_and_missed_errord [2021-11-21 01:53:23,466 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-21 01:53:23,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-21 01:53:23,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_rhine_private [2021-11-21 01:53:23,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_rhine_private [2021-11-21 01:53:23,466 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-21 01:53:23,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-21 01:53:23,467 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-21 01:53:23,467 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-21 01:53:23,467 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:53:23,467 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:53:23,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 01:53:23,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 01:53:23,468 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2021-11-21 01:53:23,468 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2021-11-21 01:53:23,468 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 01:53:23,468 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 01:53:23,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_68 [2021-11-21 01:53:23,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_68 [2021-11-21 01:53:23,468 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_power_init [2021-11-21 01:53:23,469 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_power_init [2021-11-21 01:53:23,469 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_tx_timeout [2021-11-21 01:53:23,469 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_tx_timeout [2021-11-21 01:53:23,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_rhine_private [2021-11-21 01:53:23,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_rhine_private [2021-11-21 01:53:23,469 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-21 01:53:23,470 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-21 01:53:23,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:53:23,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:53:23,470 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-21 01:53:23,470 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-21 01:53:23,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:53:23,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:53:23,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:53:23,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:53:23,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:53:23,471 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-21 01:53:23,471 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_chip_reset [2021-11-21 01:53:23,472 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_chip_reset [2021-11-21 01:53:23,472 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-21 01:53:23,472 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-21 01:53:23,472 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-21 01:53:23,472 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-21 01:53:23,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:53:23,472 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:53:23,473 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_cam_mask [2021-11-21 01:53:23,473 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_cam_mask [2021-11-21 01:53:23,473 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2021-11-21 01:53:23,473 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2021-11-21 01:53:23,473 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 01:53:23,473 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 01:53:23,474 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_remove_one [2021-11-21 01:53:23,474 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_remove_one [2021-11-21 01:53:23,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-21 01:53:23,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-21 01:53:23,474 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-21 01:53:23,474 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-21 01:53:23,475 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_close [2021-11-21 01:53:23,475 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_close [2021-11-21 01:53:23,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_79 [2021-11-21 01:53:23,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_79 [2021-11-21 01:53:23,475 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 01:53:23,475 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 01:53:23,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:53:23,476 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 01:53:23,476 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 01:53:23,476 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 01:53:23,476 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 01:53:23,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:53:23,477 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_check_media [2021-11-21 01:53:23,477 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_check_media [2021-11-21 01:53:23,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2021-11-21 01:53:23,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2021-11-21 01:53:23,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:53:23,478 INFO L130 BoogieDeclarations]: Found specification of procedure free_rbufs [2021-11-21 01:53:23,478 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rbufs [2021-11-21 01:53:23,478 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_get_events [2021-11-21 01:53:23,478 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_get_events [2021-11-21 01:53:23,478 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 01:53:23,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 01:53:23,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-21 01:53:23,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-21 01:53:23,479 INFO L130 BoogieDeclarations]: Found specification of procedure enable_mmio [2021-11-21 01:53:23,479 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_mmio [2021-11-21 01:53:23,479 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_vlan_cam_mask [2021-11-21 01:53:23,480 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_vlan_cam_mask [2021-11-21 01:53:23,480 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-21 01:53:23,480 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-21 01:53:23,480 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-21 01:53:23,480 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-21 01:53:23,480 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 01:53:23,481 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 01:53:23,481 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-21 01:53:23,481 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-21 01:53:23,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:53:23,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:53:23,481 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-21 01:53:23,481 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-21 01:53:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 01:53:23,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 01:53:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 01:53:23,482 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 01:53:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 01:53:23,482 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 01:53:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_63 [2021-11-21 01:53:23,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_63 [2021-11-21 01:53:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_disable_linkmon [2021-11-21 01:53:23,483 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_disable_linkmon [2021-11-21 01:53:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_ack_events [2021-11-21 01:53:23,483 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_ack_events [2021-11-21 01:53:23,484 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 01:53:23,484 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 01:53:23,484 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_resume [2021-11-21 01:53:23,484 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_resume [2021-11-21 01:53:23,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:53:23,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_67 [2021-11-21 01:53:23,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_67 [2021-11-21 01:53:23,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:53:23,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:53:23,485 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2021-11-21 01:53:23,485 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2021-11-21 01:53:23,485 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 01:53:23,486 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 01:53:23,486 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_high [2021-11-21 01:53:23,486 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_high [2021-11-21 01:53:23,486 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_irq_disable [2021-11-21 01:53:23,486 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_irq_disable [2021-11-21 01:53:23,486 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_enable [2021-11-21 01:53:23,487 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_enable [2021-11-21 01:53:23,487 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_tbufs [2021-11-21 01:53:23,487 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_tbufs [2021-11-21 01:53:23,487 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-21 01:53:23,487 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-21 01:53:23,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:53:23,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:53:23,488 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-21 01:53:23,488 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-21 01:53:23,488 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-21 01:53:23,488 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-21 01:53:23,488 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_enable_linkmon [2021-11-21 01:53:23,489 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_enable_linkmon [2021-11-21 01:53:23,489 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_vcam [2021-11-21 01:53:23,489 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_vcam [2021-11-21 01:53:23,489 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 01:53:23,489 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 01:53:23,489 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-21 01:53:23,489 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-21 01:53:23,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:53:23,490 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_suspend [2021-11-21 01:53:23,490 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_suspend [2021-11-21 01:53:23,490 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_open [2021-11-21 01:53:23,490 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_open [2021-11-21 01:53:23,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:53:23,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:53:24,544 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:53:24,552 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:53:24,783 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 02:03:26,376 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 02:03:26,461 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 02:03:30,480 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 02:03:30,481 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-21 02:03:30,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:03:30 BoogieIcfgContainer [2021-11-21 02:03:30,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 02:03:30,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 02:03:30,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 02:03:30,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 02:03:30,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:53:17" (1/3) ... [2021-11-21 02:03:30,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5f0998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:03:30, skipping insertion in model container [2021-11-21 02:03:30,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:53:22" (2/3) ... [2021-11-21 02:03:30,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5f0998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:03:30, skipping insertion in model container [2021-11-21 02:03:30,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:03:30" (3/3) ... [2021-11-21 02:03:30,499 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i [2021-11-21 02:03:30,507 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 02:03:30,507 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 02:03:30,596 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 02:03:30,613 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 02:03:30,615 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 02:03:30,688 INFO L276 IsEmpty]: Start isEmpty. Operand has 1684 states, 951 states have (on average 1.3112513144058886) internal successors, (1247), 1000 states have internal predecessors, (1247), 604 states have call successors, (604), 128 states have call predecessors, (604), 127 states have return successors, (595), 582 states have call predecessors, (595), 595 states have call successors, (595) [2021-11-21 02:03:30,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-21 02:03:30,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:03:30,723 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 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] [2021-11-21 02:03:30,724 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 02:03:30,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:03:30,732 INFO L85 PathProgramCache]: Analyzing trace with hash -141573524, now seen corresponding path program 1 times [2021-11-21 02:03:30,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:03:30,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417988305] [2021-11-21 02:03:30,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:03:30,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:03:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:03:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2021-11-21 02:03:32,633 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:03:32,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417988305] [2021-11-21 02:03:32,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417988305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:03:32,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:03:32,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:03:32,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584380169] [2021-11-21 02:03:32,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:03:32,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:03:32,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:03:32,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:03:32,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:03:32,702 INFO L87 Difference]: Start difference. First operand has 1684 states, 951 states have (on average 1.3112513144058886) internal successors, (1247), 1000 states have internal predecessors, (1247), 604 states have call successors, (604), 128 states have call predecessors, (604), 127 states have return successors, (595), 582 states have call predecessors, (595), 595 states have call successors, (595) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-21 02:03:34,885 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:40,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:03:40,483 INFO L93 Difference]: Finished difference Result 4901 states and 7279 transitions. [2021-11-21 02:03:40,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:03:40,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 164 [2021-11-21 02:03:40,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:03:40,535 INFO L225 Difference]: With dead ends: 4901 [2021-11-21 02:03:40,536 INFO L226 Difference]: Without dead ends: 3233 [2021-11-21 02:03:40,555 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 02:03:40,559 INFO L933 BasicCegarLoop]: 2631 mSDtfsCounter, 2302 mSDsluCounter, 2380 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2302 SdHoareTripleChecker+Valid, 4674 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-21 02:03:40,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2302 Valid, 4674 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 720 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2021-11-21 02:03:40,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3233 states. [2021-11-21 02:03:40,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3233 to 3229. [2021-11-21 02:03:40,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3229 states, 1836 states have (on average 1.3044662309368191) internal successors, (2395), 1931 states have internal predecessors, (2395), 1140 states have call successors, (1140), 251 states have call predecessors, (1140), 250 states have return successors, (1136), 1110 states have call predecessors, (1136), 1136 states have call successors, (1136) [2021-11-21 02:03:40,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3229 states to 3229 states and 4671 transitions. [2021-11-21 02:03:40,908 INFO L78 Accepts]: Start accepts. Automaton has 3229 states and 4671 transitions. Word has length 164 [2021-11-21 02:03:40,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:03:40,910 INFO L470 AbstractCegarLoop]: Abstraction has 3229 states and 4671 transitions. [2021-11-21 02:03:40,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-21 02:03:40,910 INFO L276 IsEmpty]: Start isEmpty. Operand 3229 states and 4671 transitions. [2021-11-21 02:03:40,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-21 02:03:40,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:03:40,921 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:03:40,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 02:03:40,922 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 02:03:40,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:03:40,923 INFO L85 PathProgramCache]: Analyzing trace with hash -658676959, now seen corresponding path program 1 times [2021-11-21 02:03:40,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:03:40,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821027690] [2021-11-21 02:03:40,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:03:40,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:03:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:03:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2021-11-21 02:03:41,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:03:41,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821027690] [2021-11-21 02:03:41,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821027690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:03:41,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:03:41,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:03:41,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142410895] [2021-11-21 02:03:41,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:03:41,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:03:41,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:03:41,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:03:41,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:03:41,732 INFO L87 Difference]: Start difference. First operand 3229 states and 4671 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-21 02:03:43,866 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:47,545 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:52,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:52,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:03:52,659 INFO L93 Difference]: Finished difference Result 9107 states and 13119 transitions. [2021-11-21 02:03:52,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:03:52,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 169 [2021-11-21 02:03:52,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:03:52,717 INFO L225 Difference]: With dead ends: 9107 [2021-11-21 02:03:52,717 INFO L226 Difference]: Without dead ends: 5907 [2021-11-21 02:03:52,737 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 02:03:52,738 INFO L933 BasicCegarLoop]: 2548 mSDtfsCounter, 1960 mSDsluCounter, 2317 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1960 SdHoareTripleChecker+Valid, 4555 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-11-21 02:03:52,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1960 Valid, 4555 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 735 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2021-11-21 02:03:52,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5907 states. [2021-11-21 02:03:53,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5907 to 5878. [2021-11-21 02:03:53,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5878 states, 3331 states have (on average 1.2957069948964275) internal successors, (4316), 3511 states have internal predecessors, (4316), 2065 states have call successors, (2065), 482 states have call predecessors, (2065), 479 states have return successors, (2063), 2002 states have call predecessors, (2063), 2061 states have call successors, (2063) [2021-11-21 02:03:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5878 states to 5878 states and 8444 transitions. [2021-11-21 02:03:53,259 INFO L78 Accepts]: Start accepts. Automaton has 5878 states and 8444 transitions. Word has length 169 [2021-11-21 02:03:53,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:03:53,260 INFO L470 AbstractCegarLoop]: Abstraction has 5878 states and 8444 transitions. [2021-11-21 02:03:53,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-21 02:03:53,260 INFO L276 IsEmpty]: Start isEmpty. Operand 5878 states and 8444 transitions. [2021-11-21 02:03:53,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-21 02:03:53,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:03:53,266 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 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] [2021-11-21 02:03:53,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 02:03:53,267 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 02:03:53,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:03:53,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1072181144, now seen corresponding path program 1 times [2021-11-21 02:03:53,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:03:53,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855743707] [2021-11-21 02:03:53,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:03:53,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:03:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:03:54,427 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2021-11-21 02:03:54,427 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:03:54,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855743707] [2021-11-21 02:03:54,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855743707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:03:54,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:03:54,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 02:03:54,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283914963] [2021-11-21 02:03:54,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:03:54,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 02:03:54,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:03:54,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 02:03:54,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 02:03:54,430 INFO L87 Difference]: Start difference. First operand 5878 states and 8444 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-21 02:03:56,569 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:14,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:04:14,754 INFO L93 Difference]: Finished difference Result 15089 states and 21601 transitions. [2021-11-21 02:04:14,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 02:04:14,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 181 [2021-11-21 02:04:14,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:04:14,855 INFO L225 Difference]: With dead ends: 15089 [2021-11-21 02:04:14,856 INFO L226 Difference]: Without dead ends: 9240 [2021-11-21 02:04:14,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 02:04:14,901 INFO L933 BasicCegarLoop]: 3270 mSDtfsCounter, 5970 mSDsluCounter, 4876 mSDsCounter, 0 mSdLazyCounter, 3071 mSolverCounterSat, 1206 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6109 SdHoareTripleChecker+Valid, 7323 SdHoareTripleChecker+Invalid, 4278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1206 IncrementalHoareTripleChecker+Valid, 3071 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2021-11-21 02:04:14,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6109 Valid, 7323 Invalid, 4278 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1206 Valid, 3071 Invalid, 1 Unknown, 0 Unchecked, 19.6s Time] [2021-11-21 02:04:14,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9240 states. [2021-11-21 02:04:15,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9240 to 9182. [2021-11-21 02:04:15,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9182 states, 5212 states have (on average 1.2904834996162702) internal successors, (6726), 5492 states have internal predecessors, (6726), 3176 states have call successors, (3176), 799 states have call predecessors, (3176), 791 states have return successors, (3175), 3062 states have call predecessors, (3175), 3172 states have call successors, (3175) [2021-11-21 02:04:15,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9182 states to 9182 states and 13077 transitions. [2021-11-21 02:04:15,851 INFO L78 Accepts]: Start accepts. Automaton has 9182 states and 13077 transitions. Word has length 181 [2021-11-21 02:04:15,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:04:15,856 INFO L470 AbstractCegarLoop]: Abstraction has 9182 states and 13077 transitions. [2021-11-21 02:04:15,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-21 02:04:15,857 INFO L276 IsEmpty]: Start isEmpty. Operand 9182 states and 13077 transitions. [2021-11-21 02:04:15,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-21 02:04:15,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:04:15,866 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:04:15,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 02:04:15,867 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 02:04:15,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:04:15,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1992989176, now seen corresponding path program 1 times [2021-11-21 02:04:15,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:04:15,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313585380] [2021-11-21 02:04:15,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:04:15,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:04:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:04:16,761 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2021-11-21 02:04:16,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:04:16,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313585380] [2021-11-21 02:04:16,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313585380] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:04:16,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:04:16,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:04:16,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636394174] [2021-11-21 02:04:16,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:04:16,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:04:16,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:04:16,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:04:16,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:04:16,764 INFO L87 Difference]: Start difference. First operand 9182 states and 13077 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-21 02:04:18,929 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:24,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:04:24,337 INFO L93 Difference]: Finished difference Result 26009 states and 36940 transitions. [2021-11-21 02:04:24,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:04:24,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 186 [2021-11-21 02:04:24,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:04:24,482 INFO L225 Difference]: With dead ends: 26009 [2021-11-21 02:04:24,482 INFO L226 Difference]: Without dead ends: 16856 [2021-11-21 02:04:24,547 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 02:04:24,548 INFO L933 BasicCegarLoop]: 2791 mSDtfsCounter, 2042 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 4795 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-21 02:04:24,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2042 Valid, 4795 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 803 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2021-11-21 02:04:24,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16856 states. [2021-11-21 02:04:25,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16856 to 16817. [2021-11-21 02:04:25,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16817 states, 9511 states have (on average 1.2726316896225423) internal successors, (12104), 10020 states have internal predecessors, (12104), 5780 states have call successors, (5780), 1536 states have call predecessors, (5780), 1523 states have return successors, (5779), 5569 states have call predecessors, (5779), 5776 states have call successors, (5779) [2021-11-21 02:04:25,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16817 states to 16817 states and 23663 transitions. [2021-11-21 02:04:25,796 INFO L78 Accepts]: Start accepts. Automaton has 16817 states and 23663 transitions. Word has length 186 [2021-11-21 02:04:25,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:04:25,797 INFO L470 AbstractCegarLoop]: Abstraction has 16817 states and 23663 transitions. [2021-11-21 02:04:25,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-21 02:04:25,798 INFO L276 IsEmpty]: Start isEmpty. Operand 16817 states and 23663 transitions. [2021-11-21 02:04:25,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-21 02:04:25,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:04:25,808 INFO L514 BasicCegarLoop]: trace histogram [16, 14, 14, 14, 14, 14, 14, 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] [2021-11-21 02:04:25,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 02:04:25,809 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 02:04:25,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:04:25,810 INFO L85 PathProgramCache]: Analyzing trace with hash -159327193, now seen corresponding path program 1 times [2021-11-21 02:04:25,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:04:25,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205923157] [2021-11-21 02:04:25,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:04:25,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:04:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:04:26,637 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2021-11-21 02:04:26,637 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:04:26,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205923157] [2021-11-21 02:04:26,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205923157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:04:26,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:04:26,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:04:26,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307170394] [2021-11-21 02:04:26,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:04:26,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:04:26,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:04:26,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:04:26,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:04:26,640 INFO L87 Difference]: Start difference. First operand 16817 states and 23663 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-21 02:04:28,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:34,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:04:34,034 INFO L93 Difference]: Finished difference Result 46587 states and 65606 transitions. [2021-11-21 02:04:34,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:04:34,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 206 [2021-11-21 02:04:34,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:04:34,268 INFO L225 Difference]: With dead ends: 46587 [2021-11-21 02:04:34,269 INFO L226 Difference]: Without dead ends: 29799 [2021-11-21 02:04:34,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:04:34,374 INFO L933 BasicCegarLoop]: 2949 mSDtfsCounter, 2271 mSDsluCounter, 2369 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 4981 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-21 02:04:34,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2271 Valid, 4981 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 814 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2021-11-21 02:04:34,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29799 states. [2021-11-21 02:04:36,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29799 to 29750. [2021-11-21 02:04:36,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29750 states, 16841 states have (on average 1.2694614334065673) internal successors, (21379), 17778 states have internal predecessors, (21379), 10209 states have call successors, (10209), 2722 states have call predecessors, (10209), 2697 states have return successors, (10211), 9809 states have call predecessors, (10211), 10205 states have call successors, (10211) [2021-11-21 02:04:36,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29750 states to 29750 states and 41799 transitions. [2021-11-21 02:04:36,717 INFO L78 Accepts]: Start accepts. Automaton has 29750 states and 41799 transitions. Word has length 206 [2021-11-21 02:04:36,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:04:36,718 INFO L470 AbstractCegarLoop]: Abstraction has 29750 states and 41799 transitions. [2021-11-21 02:04:36,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-21 02:04:36,719 INFO L276 IsEmpty]: Start isEmpty. Operand 29750 states and 41799 transitions. [2021-11-21 02:04:36,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-21 02:04:36,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:04:36,726 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 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] [2021-11-21 02:04:36,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 02:04:36,726 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 02:04:36,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:04:36,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1039484783, now seen corresponding path program 1 times [2021-11-21 02:04:36,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:04:36,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886745438] [2021-11-21 02:04:36,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:04:36,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:04:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:04:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2021-11-21 02:04:37,751 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:04:37,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886745438] [2021-11-21 02:04:37,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886745438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:04:37,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:04:37,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 02:04:37,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399359771] [2021-11-21 02:04:37,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:04:37,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 02:04:37,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:04:37,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 02:04:37,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 02:04:37,754 INFO L87 Difference]: Start difference. First operand 29750 states and 41799 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-21 02:04:39,928 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:47,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:04:47,547 INFO L93 Difference]: Finished difference Result 30070 states and 42117 transitions. [2021-11-21 02:04:47,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 02:04:47,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 209 [2021-11-21 02:04:47,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:04:47,733 INFO L225 Difference]: With dead ends: 30070 [2021-11-21 02:04:47,733 INFO L226 Difference]: Without dead ends: 30068 [2021-11-21 02:04:47,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 02:04:47,754 INFO L933 BasicCegarLoop]: 2058 mSDtfsCounter, 2334 mSDsluCounter, 4836 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2345 SdHoareTripleChecker+Valid, 6192 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-21 02:04:47,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2345 Valid, 6192 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1070 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2021-11-21 02:04:47,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30068 states. [2021-11-21 02:04:49,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30068 to 30066. [2021-11-21 02:04:49,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30066 states, 17024 states have (on average 1.2686795112781954) internal successors, (21598), 17985 states have internal predecessors, (21598), 10257 states have call successors, (10257), 2807 states have call predecessors, (10257), 2782 states have return successors, (10259), 9857 states have call predecessors, (10259), 10253 states have call successors, (10259) [2021-11-21 02:04:50,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30066 states to 30066 states and 42114 transitions. [2021-11-21 02:04:50,090 INFO L78 Accepts]: Start accepts. Automaton has 30066 states and 42114 transitions. Word has length 209 [2021-11-21 02:04:50,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:04:50,106 INFO L470 AbstractCegarLoop]: Abstraction has 30066 states and 42114 transitions. [2021-11-21 02:04:50,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-21 02:04:50,107 INFO L276 IsEmpty]: Start isEmpty. Operand 30066 states and 42114 transitions. [2021-11-21 02:04:50,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-21 02:04:50,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:04:50,114 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 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] [2021-11-21 02:04:50,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 02:04:50,114 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 02:04:50,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:04:50,115 INFO L85 PathProgramCache]: Analyzing trace with hash -460443129, now seen corresponding path program 1 times [2021-11-21 02:04:50,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:04:50,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186851499] [2021-11-21 02:04:50,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:04:50,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:04:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:04:51,285 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2021-11-21 02:04:51,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:04:51,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186851499] [2021-11-21 02:04:51,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186851499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:04:51,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:04:51,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 02:04:51,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137894931] [2021-11-21 02:04:51,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:04:51,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 02:04:51,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:04:51,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 02:04:51,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 02:04:51,288 INFO L87 Difference]: Start difference. First operand 30066 states and 42114 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-21 02:04:53,436 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:59,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:01,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:05:01,037 INFO L93 Difference]: Finished difference Result 30072 states and 42119 transitions. [2021-11-21 02:05:01,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 02:05:01,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 214 [2021-11-21 02:05:01,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:05:01,204 INFO L225 Difference]: With dead ends: 30072 [2021-11-21 02:05:01,205 INFO L226 Difference]: Without dead ends: 30070 [2021-11-21 02:05:01,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 02:05:01,222 INFO L933 BasicCegarLoop]: 2057 mSDtfsCounter, 2341 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2351 SdHoareTripleChecker+Valid, 6152 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-21 02:05:01,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2351 Valid, 6152 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2021-11-21 02:05:01,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30070 states. [2021-11-21 02:05:03,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30070 to 30070. [2021-11-21 02:05:03,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30070 states, 17027 states have (on average 1.2686321724320198) internal successors, (21601), 17988 states have internal predecessors, (21601), 10257 states have call successors, (10257), 2808 states have call predecessors, (10257), 2783 states have return successors, (10259), 9857 states have call predecessors, (10259), 10253 states have call successors, (10259) [2021-11-21 02:05:03,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30070 states to 30070 states and 42117 transitions. [2021-11-21 02:05:03,266 INFO L78 Accepts]: Start accepts. Automaton has 30070 states and 42117 transitions. Word has length 214 [2021-11-21 02:05:03,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:05:03,267 INFO L470 AbstractCegarLoop]: Abstraction has 30070 states and 42117 transitions. [2021-11-21 02:05:03,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-21 02:05:03,268 INFO L276 IsEmpty]: Start isEmpty. Operand 30070 states and 42117 transitions. [2021-11-21 02:05:03,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-21 02:05:03,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:05:03,278 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 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] [2021-11-21 02:05:03,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 02:05:03,278 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 02:05:03,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:05:03,280 INFO L85 PathProgramCache]: Analyzing trace with hash -376491407, now seen corresponding path program 1 times [2021-11-21 02:05:03,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:05:03,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042819329] [2021-11-21 02:05:03,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:05:03,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:05:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:05:04,463 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2021-11-21 02:05:04,463 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:05:04,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042819329] [2021-11-21 02:05:04,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042819329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:05:04,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:05:04,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 02:05:04,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723974847] [2021-11-21 02:05:04,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:05:04,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 02:05:04,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:05:04,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 02:05:04,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 02:05:04,466 INFO L87 Difference]: Start difference. First operand 30070 states and 42117 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-21 02:05:06,634 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:12,300 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:14,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:05:14,649 INFO L93 Difference]: Finished difference Result 30076 states and 42122 transitions. [2021-11-21 02:05:14,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 02:05:14,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 217 [2021-11-21 02:05:14,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:05:14,895 INFO L225 Difference]: With dead ends: 30076 [2021-11-21 02:05:14,895 INFO L226 Difference]: Without dead ends: 30074 [2021-11-21 02:05:14,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 02:05:14,905 INFO L933 BasicCegarLoop]: 2057 mSDtfsCounter, 2342 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2351 SdHoareTripleChecker+Valid, 6152 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-21 02:05:14,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2351 Valid, 6152 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2021-11-21 02:05:14,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30074 states. [2021-11-21 02:05:16,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30074 to 30074. [2021-11-21 02:05:16,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30074 states, 17030 states have (on average 1.2685848502642396) internal successors, (21604), 17991 states have internal predecessors, (21604), 10257 states have call successors, (10257), 2809 states have call predecessors, (10257), 2784 states have return successors, (10259), 9857 states have call predecessors, (10259), 10253 states have call successors, (10259) [2021-11-21 02:05:16,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30074 states to 30074 states and 42120 transitions. [2021-11-21 02:05:16,618 INFO L78 Accepts]: Start accepts. Automaton has 30074 states and 42120 transitions. Word has length 217 [2021-11-21 02:05:16,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:05:16,620 INFO L470 AbstractCegarLoop]: Abstraction has 30074 states and 42120 transitions. [2021-11-21 02:05:16,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-21 02:05:16,621 INFO L276 IsEmpty]: Start isEmpty. Operand 30074 states and 42120 transitions. [2021-11-21 02:05:16,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-21 02:05:16,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:05:16,630 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:05:16,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 02:05:16,631 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 02:05:16,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:05:16,631 INFO L85 PathProgramCache]: Analyzing trace with hash 95076359, now seen corresponding path program 1 times [2021-11-21 02:05:16,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:05:16,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835909366] [2021-11-21 02:05:16,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:05:16,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:05:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:05:17,575 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2021-11-21 02:05:17,576 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:05:17,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835909366] [2021-11-21 02:05:17,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835909366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:05:17,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:05:17,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 02:05:17,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568415812] [2021-11-21 02:05:17,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:05:17,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 02:05:17,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:05:17,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 02:05:17,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 02:05:17,579 INFO L87 Difference]: Start difference. First operand 30074 states and 42120 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-21 02:05:19,735 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:25,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:27,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:05:27,509 INFO L93 Difference]: Finished difference Result 30080 states and 42125 transitions. [2021-11-21 02:05:27,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 02:05:27,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 224 [2021-11-21 02:05:27,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:05:27,646 INFO L225 Difference]: With dead ends: 30080 [2021-11-21 02:05:27,647 INFO L226 Difference]: Without dead ends: 30078 [2021-11-21 02:05:27,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 02:05:27,662 INFO L933 BasicCegarLoop]: 2057 mSDtfsCounter, 2341 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2349 SdHoareTripleChecker+Valid, 6152 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-21 02:05:27,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2349 Valid, 6152 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2021-11-21 02:05:27,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30078 states. [2021-11-21 02:05:29,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30078 to 30078. [2021-11-21 02:05:29,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30078 states, 17033 states have (on average 1.2685375447660423) internal successors, (21607), 17994 states have internal predecessors, (21607), 10257 states have call successors, (10257), 2810 states have call predecessors, (10257), 2785 states have return successors, (10259), 9857 states have call predecessors, (10259), 10253 states have call successors, (10259) [2021-11-21 02:05:29,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30078 states to 30078 states and 42123 transitions. [2021-11-21 02:05:29,163 INFO L78 Accepts]: Start accepts. Automaton has 30078 states and 42123 transitions. Word has length 224 [2021-11-21 02:05:29,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:05:29,164 INFO L470 AbstractCegarLoop]: Abstraction has 30078 states and 42123 transitions. [2021-11-21 02:05:29,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-21 02:05:29,164 INFO L276 IsEmpty]: Start isEmpty. Operand 30078 states and 42123 transitions. [2021-11-21 02:05:29,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-21 02:05:29,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:05:29,175 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:05:29,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 02:05:29,175 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 02:05:29,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:05:29,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1736300475, now seen corresponding path program 1 times [2021-11-21 02:05:29,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:05:29,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125160873] [2021-11-21 02:05:29,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:05:29,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:05:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:05:30,248 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2021-11-21 02:05:30,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:05:30,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125160873] [2021-11-21 02:05:30,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125160873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:05:30,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:05:30,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 02:05:30,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581614033] [2021-11-21 02:05:30,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:05:30,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 02:05:30,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:05:30,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 02:05:30,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 02:05:30,252 INFO L87 Difference]: Start difference. First operand 30078 states and 42123 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-21 02:05:32,413 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:39,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:05:39,264 INFO L93 Difference]: Finished difference Result 30084 states and 42128 transitions. [2021-11-21 02:05:39,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 02:05:39,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 228 [2021-11-21 02:05:39,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:05:39,375 INFO L225 Difference]: With dead ends: 30084 [2021-11-21 02:05:39,376 INFO L226 Difference]: Without dead ends: 30082 [2021-11-21 02:05:39,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 02:05:39,389 INFO L933 BasicCegarLoop]: 2057 mSDtfsCounter, 2341 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 6152 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-21 02:05:39,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2348 Valid, 6152 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2021-11-21 02:05:39,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30082 states. [2021-11-21 02:05:40,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30082 to 30082. [2021-11-21 02:05:40,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30082 states, 17036 states have (on average 1.2684902559286217) internal successors, (21610), 17997 states have internal predecessors, (21610), 10257 states have call successors, (10257), 2811 states have call predecessors, (10257), 2786 states have return successors, (10259), 9857 states have call predecessors, (10259), 10253 states have call successors, (10259) [2021-11-21 02:05:40,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30082 states to 30082 states and 42126 transitions. [2021-11-21 02:05:40,920 INFO L78 Accepts]: Start accepts. Automaton has 30082 states and 42126 transitions. Word has length 228 [2021-11-21 02:05:40,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:05:40,920 INFO L470 AbstractCegarLoop]: Abstraction has 30082 states and 42126 transitions. [2021-11-21 02:05:40,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-21 02:05:40,921 INFO L276 IsEmpty]: Start isEmpty. Operand 30082 states and 42126 transitions. [2021-11-21 02:05:40,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-21 02:05:40,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:05:40,934 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 3, 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 02:05:40,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 02:05:40,935 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 02:05:40,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:05:40,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1739230763, now seen corresponding path program 1 times [2021-11-21 02:05:40,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:05:40,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400653892] [2021-11-21 02:05:40,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:05:40,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:05:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:05:41,624 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2021-11-21 02:05:41,625 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:05:41,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400653892] [2021-11-21 02:05:41,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400653892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:05:41,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:05:41,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:05:41,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611425229] [2021-11-21 02:05:41,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:05:41,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:05:41,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:05:41,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:05:41,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:05:41,627 INFO L87 Difference]: Start difference. First operand 30082 states and 42126 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 02:05:43,785 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:49,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:51,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:05:51,958 INFO L93 Difference]: Finished difference Result 86528 states and 121244 transitions. [2021-11-21 02:05:51,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:05:51,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 249 [2021-11-21 02:05:51,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:05:52,203 INFO L225 Difference]: With dead ends: 86528 [2021-11-21 02:05:52,203 INFO L226 Difference]: Without dead ends: 56475 [2021-11-21 02:05:52,299 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 02:05:52,300 INFO L933 BasicCegarLoop]: 2652 mSDtfsCounter, 2334 mSDsluCounter, 2391 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2334 SdHoareTripleChecker+Valid, 4701 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-21 02:05:52,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2334 Valid, 4701 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 713 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2021-11-21 02:05:52,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56475 states. [2021-11-21 02:05:54,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56475 to 56382. [2021-11-21 02:05:54,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56382 states, 32033 states have (on average 1.2699091561826865) internal successors, (40679), 33897 states have internal predecessors, (40679), 19139 states have call successors, (19139), 5256 states have call predecessors, (19139), 5207 states have return successors, (19147), 18324 states have call predecessors, (19147), 19135 states have call successors, (19147) [2021-11-21 02:05:55,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56382 states to 56382 states and 78965 transitions. [2021-11-21 02:05:55,349 INFO L78 Accepts]: Start accepts. Automaton has 56382 states and 78965 transitions. Word has length 249 [2021-11-21 02:05:55,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:05:55,350 INFO L470 AbstractCegarLoop]: Abstraction has 56382 states and 78965 transitions. [2021-11-21 02:05:55,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 02:05:55,350 INFO L276 IsEmpty]: Start isEmpty. Operand 56382 states and 78965 transitions. [2021-11-21 02:05:55,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-21 02:05:55,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:05:55,360 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 6, 5, 5, 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] [2021-11-21 02:05:55,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 02:05:55,360 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 02:05:55,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:05:55,361 INFO L85 PathProgramCache]: Analyzing trace with hash 503370195, now seen corresponding path program 1 times [2021-11-21 02:05:55,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:05:55,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923571130] [2021-11-21 02:05:55,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:05:55,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:05:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:05:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2021-11-21 02:05:56,148 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:05:56,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923571130] [2021-11-21 02:05:56,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923571130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:05:56,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:05:56,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 02:05:56,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743248635] [2021-11-21 02:05:56,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:05:56,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 02:05:56,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:05:56,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 02:05:56,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 02:05:56,150 INFO L87 Difference]: Start difference. First operand 56382 states and 78965 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 02:05:58,283 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:05,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:06:05,905 INFO L93 Difference]: Finished difference Result 56388 states and 78970 transitions. [2021-11-21 02:06:05,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 02:06:05,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 233 [2021-11-21 02:06:05,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:06:06,074 INFO L225 Difference]: With dead ends: 56388 [2021-11-21 02:06:06,074 INFO L226 Difference]: Without dead ends: 56386 [2021-11-21 02:06:06,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 02:06:06,094 INFO L933 BasicCegarLoop]: 2057 mSDtfsCounter, 2341 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2347 SdHoareTripleChecker+Valid, 6152 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-21 02:06:06,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2347 Valid, 6152 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2021-11-21 02:06:06,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56386 states. [2021-11-21 02:06:08,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56386 to 56386. [2021-11-21 02:06:08,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56386 states, 32036 states have (on average 1.2698838806342865) internal successors, (40682), 33900 states have internal predecessors, (40682), 19139 states have call successors, (19139), 5257 states have call predecessors, (19139), 5208 states have return successors, (19147), 18324 states have call predecessors, (19147), 19135 states have call successors, (19147) [2021-11-21 02:06:08,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56386 states to 56386 states and 78968 transitions. [2021-11-21 02:06:08,980 INFO L78 Accepts]: Start accepts. Automaton has 56386 states and 78968 transitions. Word has length 233 [2021-11-21 02:06:08,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:06:08,981 INFO L470 AbstractCegarLoop]: Abstraction has 56386 states and 78968 transitions. [2021-11-21 02:06:08,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 02:06:08,981 INFO L276 IsEmpty]: Start isEmpty. Operand 56386 states and 78968 transitions. [2021-11-21 02:06:08,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-21 02:06:08,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:06:08,992 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 7, 6, 6, 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] [2021-11-21 02:06:08,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 02:06:08,992 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 02:06:08,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:06:08,993 INFO L85 PathProgramCache]: Analyzing trace with hash 377083249, now seen corresponding path program 1 times [2021-11-21 02:06:08,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:06:08,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769270438] [2021-11-21 02:06:08,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:06:08,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:06:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:06:09,742 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 941 trivial. 0 not checked. [2021-11-21 02:06:09,742 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:06:09,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769270438] [2021-11-21 02:06:09,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769270438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:06:09,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:06:09,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 02:06:09,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535828074] [2021-11-21 02:06:09,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:06:09,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 02:06:09,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:06:09,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 02:06:09,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 02:06:09,745 INFO L87 Difference]: Start difference. First operand 56386 states and 78968 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-21 02:06:11,851 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:17,575 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:21,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:06:21,184 INFO L93 Difference]: Finished difference Result 66041 states and 91781 transitions. [2021-11-21 02:06:21,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 02:06:21,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 237 [2021-11-21 02:06:21,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:06:21,381 INFO L225 Difference]: With dead ends: 66041 [2021-11-21 02:06:21,381 INFO L226 Difference]: Without dead ends: 66039 [2021-11-21 02:06:21,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 02:06:21,400 INFO L933 BasicCegarLoop]: 2200 mSDtfsCounter, 2200 mSDsluCounter, 5601 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2205 SdHoareTripleChecker+Valid, 7041 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-11-21 02:06:21,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2205 Valid, 7041 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1131 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2021-11-21 02:06:21,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66039 states. [2021-11-21 02:06:24,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66039 to 66037. [2021-11-21 02:06:24,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66037 states, 37038 states have (on average 1.2617311949889303) internal successors, (46732), 39238 states have internal predecessors, (46732), 22519 states have call successors, (22519), 6526 states have call predecessors, (22519), 6477 states have return successors, (22527), 21528 states have call predecessors, (22527), 22515 states have call successors, (22527) [2021-11-21 02:06:24,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66037 states to 66037 states and 91778 transitions. [2021-11-21 02:06:24,983 INFO L78 Accepts]: Start accepts. Automaton has 66037 states and 91778 transitions. Word has length 237 [2021-11-21 02:06:24,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:06:24,984 INFO L470 AbstractCegarLoop]: Abstraction has 66037 states and 91778 transitions. [2021-11-21 02:06:24,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-21 02:06:24,984 INFO L276 IsEmpty]: Start isEmpty. Operand 66037 states and 91778 transitions. [2021-11-21 02:06:24,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-21 02:06:24,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:06:24,996 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 8, 7, 7, 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] [2021-11-21 02:06:24,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 02:06:24,996 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 02:06:24,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:06:24,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1422889977, now seen corresponding path program 1 times [2021-11-21 02:06:24,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:06:24,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541931884] [2021-11-21 02:06:24,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:06:24,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:06:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:06:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 971 trivial. 0 not checked. [2021-11-21 02:06:25,646 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:06:25,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541931884] [2021-11-21 02:06:25,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541931884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:06:25,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:06:25,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 02:06:25,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051077161] [2021-11-21 02:06:25,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:06:25,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 02:06:25,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:06:25,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 02:06:25,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 02:06:25,648 INFO L87 Difference]: Start difference. First operand 66037 states and 91778 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-21 02:06:27,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []