./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.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_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/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_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/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_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/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 6757464a5622bb83d03b39d9677b81f434099fef913b81074103632b3c898f25 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:05:27,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:05:27,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:05:27,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:05:27,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:05:27,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:05:27,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:05:27,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:05:27,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:05:27,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:05:27,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:05:27,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:05:27,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:05:27,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:05:27,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:05:27,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:05:27,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:05:27,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:05:27,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:05:27,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:05:27,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:05:27,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:05:27,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:05:27,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:05:27,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:05:27,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:05:27,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:05:27,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:05:27,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:05:27,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:05:27,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:05:27,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:05:27,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:05:27,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:05:27,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:05:27,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:05:27,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:05:27,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:05:27,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:05:27,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:05:27,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:05:27,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:05:27,220 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:05:27,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:05:27,220 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:05:27,220 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:05:27,221 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:05:27,221 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:05:27,222 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:05:27,222 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:05:27,222 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:05:27,222 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:05:27,222 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:05:27,223 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:05:27,223 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:05:27,223 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:05:27,223 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:05:27,223 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:05:27,224 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:05:27,224 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:05:27,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:05:27,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:05:27,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:05:27,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:05:27,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:05:27,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:05:27,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:05:27,226 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:05:27,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:05:27,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:05:27,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:05:27,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:05:27,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:05:27,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:05:27,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:05:27,228 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:05:27,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:05:27,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:05:27,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:05:27,229 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:05:27,229 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_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6757464a5622bb83d03b39d9677b81f434099fef913b81074103632b3c898f25 [2021-11-21 00:05:27,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:05:27,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:05:27,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:05:27,548 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:05:27,548 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:05:27,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-21 00:05:27,635 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/bin/utaipan-TEXQjIfE4P/data/6b33f685d/45ef8a7148a14b30b4bcb4ee5ba5008e/FLAG0dc9ccfe0 [2021-11-21 00:05:28,749 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:05:28,751 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-21 00:05:28,824 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/bin/utaipan-TEXQjIfE4P/data/6b33f685d/45ef8a7148a14b30b4bcb4ee5ba5008e/FLAG0dc9ccfe0 [2021-11-21 00:05:29,094 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/bin/utaipan-TEXQjIfE4P/data/6b33f685d/45ef8a7148a14b30b4bcb4ee5ba5008e [2021-11-21 00:05:29,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:05:29,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:05:29,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:05:29,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:05:29,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:05:29,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:05:29" (1/1) ... [2021-11-21 00:05:29,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@374ce19a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:29, skipping insertion in model container [2021-11-21 00:05:29,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:05:29" (1/1) ... [2021-11-21 00:05:29,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:05:29,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:05:34,820 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_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463113,463126] [2021-11-21 00:05:34,824 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_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463282,463295] [2021-11-21 00:05:34,825 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_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463449,463462] [2021-11-21 00:05:34,826 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_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463617,463630] [2021-11-21 00:05:34,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:05:34,972 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:05:35,610 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_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463113,463126] [2021-11-21 00:05:35,611 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_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463282,463295] [2021-11-21 00:05:35,611 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_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463449,463462] [2021-11-21 00:05:35,612 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_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463617,463630] [2021-11-21 00:05:35,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:05:35,918 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:05:35,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:35 WrapperNode [2021-11-21 00:05:35,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:05:35,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:05:35,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:05:35,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:05:35,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:35" (1/1) ... [2021-11-21 00:05:36,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:35" (1/1) ... [2021-11-21 00:05:36,542 INFO L137 Inliner]: procedures = 625, calls = 3468, calls flagged for inlining = 312, calls inlined = 276, statements flattened = 8002 [2021-11-21 00:05:36,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:05:36,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:05:36,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:05:36,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:05:36,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:35" (1/1) ... [2021-11-21 00:05:36,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:35" (1/1) ... [2021-11-21 00:05:36,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:35" (1/1) ... [2021-11-21 00:05:36,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:35" (1/1) ... [2021-11-21 00:05:36,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:35" (1/1) ... [2021-11-21 00:05:36,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:35" (1/1) ... [2021-11-21 00:05:37,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:35" (1/1) ... [2021-11-21 00:05:37,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:05:37,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:05:37,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:05:37,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:05:37,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:35" (1/1) ... [2021-11-21 00:05:37,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:05:37,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:05:37,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:05:37,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4633f9de-79f5-47bb-bb6e-cca4d2d60ba9/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:05:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-21 00:05:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-21 00:05:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 00:05:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 00:05:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_read_phy_reg [2021-11-21 00:05:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_read_phy_reg [2021-11-21 00:05:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 00:05:37,195 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 00:05:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_force_ps [2021-11-21 00:05:37,195 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_force_ps [2021-11-21 00:05:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-21 00:05:37,196 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-21 00:05:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 00:05:37,196 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 00:05:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_89 [2021-11-21 00:05:37,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_89 [2021-11-21 00:05:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:05:37,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:05:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_del_timer [2021-11-21 00:05:37,197 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_del_timer [2021-11-21 00:05:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2021-11-21 00:05:37,198 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2021-11-21 00:05:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_78 [2021-11-21 00:05:37,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_78 [2021-11-21 00:05:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 00:05:37,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 00:05:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-21 00:05:37,199 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-21 00:05:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 00:05:37,200 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 00:05:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 00:05:37,200 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 00:05:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 00:05:37,201 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 00:05:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_disable [2021-11-21 00:05:37,201 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_disable [2021-11-21 00:05:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_io_resume [2021-11-21 00:05:37,201 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_io_resume [2021-11-21 00:05:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_restart_autoneg [2021-11-21 00:05:37,202 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_restart_autoneg [2021-11-21 00:05:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_close [2021-11-21 00:05:37,203 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_close [2021-11-21 00:05:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 00:05:37,204 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 00:05:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:05:37,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:05:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_tpd [2021-11-21 00:05:37,206 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_tpd [2021-11-21 00:05:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 00:05:37,206 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 00:05:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-21 00:05:37,206 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-21 00:05:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 00:05:37,207 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 00:05:37,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:05:37,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:05:37,208 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 00:05:37,209 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 00:05:37,209 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_free_irq [2021-11-21 00:05:37,209 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_free_irq [2021-11-21 00:05:37,209 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-21 00:05:37,209 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-21 00:05:37,210 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-21 00:05:37,210 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-21 00:05:37,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:05:37,210 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2021-11-21 00:05:37,210 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2021-11-21 00:05:37,211 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_shutdown [2021-11-21 00:05:37,212 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_shutdown [2021-11-21 00:05:37,212 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-21 00:05:37,212 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-21 00:05:37,212 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_check_eeprom_exist [2021-11-21 00:05:37,213 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_check_eeprom_exist [2021-11-21 00:05:37,213 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-21 00:05:37,213 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-21 00:05:37,213 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 00:05:37,213 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 00:05:37,214 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 00:05:37,215 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 00:05:37,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:05:37,215 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_hw_set_mac_addr [2021-11-21 00:05:37,215 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_hw_set_mac_addr [2021-11-21 00:05:37,215 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 00:05:37,216 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 00:05:37,217 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 00:05:37,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 00:05:37,217 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_tx_buffer [2021-11-21 00:05:37,218 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_tx_buffer [2021-11-21 00:05:37,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:05:37,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:05:37,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:05:37,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:05:37,219 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 00:05:37,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 00:05:37,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 00:05:37,220 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 00:05:37,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 00:05:37,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 00:05:37,220 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-21 00:05:37,221 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-21 00:05:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 00:05:37,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 00:05:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-11-21 00:05:37,222 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-11-21 00:05:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 00:05:37,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 00:05:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_reset [2021-11-21 00:05:37,226 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_reset [2021-11-21 00:05:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-21 00:05:37,226 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-21 00:05:37,227 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 00:05:37,228 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 00:05:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_down [2021-11-21 00:05:37,228 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_down [2021-11-21 00:05:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 00:05:37,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 00:05:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:05:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure __atl1e_vlan_mode [2021-11-21 00:05:37,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __atl1e_vlan_mode [2021-11-21 00:05:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 00:05:37,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 00:05:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 00:05:37,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 00:05:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:05:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-21 00:05:37,238 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-21 00:05:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:05:37,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:05:37,239 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 00:05:37,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 00:05:37,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:05:37,239 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 00:05:37,239 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-21 00:05:37,240 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-21 00:05:37,240 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-11-21 00:05:37,240 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-11-21 00:05:37,240 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_set_multi [2021-11-21 00:05:37,240 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_set_multi [2021-11-21 00:05:37,241 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_remove [2021-11-21 00:05:37,241 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_remove [2021-11-21 00:05:37,241 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-21 00:05:37,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-21 00:05:37,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_atl1e_driver_exit_14_2 [2021-11-21 00:05:37,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_atl1e_driver_exit_14_2 [2021-11-21 00:05:37,242 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-21 00:05:37,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-21 00:05:37,242 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-21 00:05:37,242 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-21 00:05:37,242 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 00:05:37,242 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 00:05:37,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 00:05:37,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 00:05:37,243 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_free_ring_resources [2021-11-21 00:05:37,243 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_free_ring_resources [2021-11-21 00:05:37,243 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-21 00:05:37,243 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-21 00:05:37,244 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-21 00:05:37,244 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-21 00:05:37,244 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 00:05:37,244 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 00:05:37,244 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_validate_option [2021-11-21 00:05:37,244 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_validate_option [2021-11-21 00:05:37,245 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2021-11-21 00:05:37,245 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2021-11-21 00:05:37,245 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-11-21 00:05:37,245 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-11-21 00:05:37,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:05:37,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:05:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-21 00:05:37,246 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-21 00:05:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-21 00:05:37,246 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-21 00:05:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:05:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:05:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:05:37,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:05:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 00:05:37,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 00:05:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 00:05:37,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 00:05:37,248 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 00:05:37,248 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 00:05:37,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-21 00:05:37,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-21 00:05:37,249 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-21 00:05:37,249 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-21 00:05:37,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 00:05:37,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 00:05:37,249 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_clean_tx_ring [2021-11-21 00:05:37,249 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_clean_tx_ring [2021-11-21 00:05:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mdio_lock_of_atl1e_adapter [2021-11-21 00:05:37,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mdio_lock_of_atl1e_adapter [2021-11-21 00:05:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-21 00:05:37,250 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-21 00:05:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-21 00:05:37,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-21 00:05:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-21 00:05:37,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-21 00:05:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_mdio_lock_of_atl1e_adapter [2021-11-21 00:05:37,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_mdio_lock_of_atl1e_adapter [2021-11-21 00:05:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-21 00:05:37,252 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-21 00:05:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:05:37,252 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:05:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_resume [2021-11-21 00:05:37,252 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_resume [2021-11-21 00:05:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 00:05:37,253 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 00:05:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-21 00:05:37,253 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-21 00:05:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:05:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 00:05:37,254 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 00:05:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-21 00:05:37,254 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-21 00:05:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 00:05:37,254 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 00:05:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_tx_timeout [2021-11-21 00:05:37,255 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_tx_timeout [2021-11-21 00:05:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:05:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_vlan_mode [2021-11-21 00:05:37,255 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_vlan_mode [2021-11-21 00:05:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_write_phy_reg [2021-11-21 00:05:37,255 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_write_phy_reg [2021-11-21 00:05:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-21 00:05:37,256 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-21 00:05:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_up [2021-11-21 00:05:37,256 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_up [2021-11-21 00:05:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:05:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_phy_commit [2021-11-21 00:05:37,257 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_phy_commit [2021-11-21 00:05:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-21 00:05:37,258 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-21 00:05:37,262 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-21 00:05:37,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-21 00:05:37,262 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 00:05:37,263 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 00:05:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:05:37,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:05:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-21 00:05:37,263 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-21 00:05:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 00:05:37,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 00:05:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_reinit_locked [2021-11-21 00:05:37,266 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_reinit_locked [2021-11-21 00:05:37,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_81 [2021-11-21 00:05:37,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_81 [2021-11-21 00:05:37,266 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_phy_init [2021-11-21 00:05:37,266 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_phy_init [2021-11-21 00:05:37,267 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_intr [2021-11-21 00:05:37,267 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_intr [2021-11-21 00:05:37,267 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 00:05:37,267 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 00:05:37,267 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-21 00:05:37,267 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-21 00:05:37,268 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_open [2021-11-21 00:05:37,268 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_open [2021-11-21 00:05:37,268 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 00:05:37,268 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 00:05:37,268 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-21 00:05:37,268 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-21 00:05:37,269 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_enable [2021-11-21 00:05:37,269 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_enable [2021-11-21 00:05:37,269 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 00:05:37,269 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 00:05:37,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:05:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_netpoll [2021-11-21 00:05:37,270 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_netpoll [2021-11-21 00:05:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:05:37,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:05:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_82 [2021-11-21 00:05:37,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_82 [2021-11-21 00:05:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_read_eeprom [2021-11-21 00:05:37,271 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_read_eeprom [2021-11-21 00:05:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_suspend [2021-11-21 00:05:37,271 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_suspend [2021-11-21 00:05:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 00:05:37,271 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 00:05:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-21 00:05:37,272 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-21 00:05:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_nway_reset [2021-11-21 00:05:37,272 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_nway_reset [2021-11-21 00:05:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-21 00:05:37,272 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-21 00:05:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_request_irq [2021-11-21 00:05:37,273 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_request_irq [2021-11-21 00:05:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2021-11-21 00:05:37,273 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2021-11-21 00:05:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:05:37,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:05:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-21 00:05:37,274 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-21 00:05:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 00:05:37,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 00:05:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_eeprom_len [2021-11-21 00:05:37,275 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_eeprom_len [2021-11-21 00:05:37,275 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-21 00:05:37,275 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-21 00:05:37,275 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-21 00:05:37,275 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-21 00:05:37,275 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_reset_hw [2021-11-21 00:05:37,276 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_reset_hw [2021-11-21 00:05:37,276 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-11-21 00:05:37,276 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-11-21 00:05:37,276 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-21 00:05:37,276 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-21 00:05:37,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:05:37,277 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-21 00:05:37,277 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-21 00:05:37,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 00:05:37,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 00:05:37,277 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_regs_len [2021-11-21 00:05:37,278 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_regs_len [2021-11-21 00:05:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_clean_rx_ring [2021-11-21 00:05:37,278 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_clean_rx_ring [2021-11-21 00:05:38,533 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:05:38,541 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:05:38,993 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:05:52,545 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 00:05:52,714 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:05:54,297 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:05:54,297 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:05:54,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:05:54 BoogieIcfgContainer [2021-11-21 00:05:54,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:05:54,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:05:54,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:05:54,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:05:54,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:05:29" (1/3) ... [2021-11-21 00:05:54,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbef09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:05:54, skipping insertion in model container [2021-11-21 00:05:54,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:35" (2/3) ... [2021-11-21 00:05:54,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbef09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:05:54, skipping insertion in model container [2021-11-21 00:05:54,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:05:54" (3/3) ... [2021-11-21 00:05:54,315 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-21 00:05:54,321 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:05:54,322 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-21 00:05:54,396 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:05:54,428 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 00:05:54,428 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-21 00:05:54,529 INFO L276 IsEmpty]: Start isEmpty. Operand has 2192 states, 1279 states have (on average 1.2791243158717749) internal successors, (1636), 1307 states have internal predecessors, (1636), 761 states have call successors, (761), 149 states have call predecessors, (761), 148 states have return successors, (755), 753 states have call predecessors, (755), 755 states have call successors, (755) [2021-11-21 00:05:54,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-21 00:05:54,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:05:54,564 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] [2021-11-21 00:05:54,564 INFO L402 AbstractCegarLoop]: === Iteration 1 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:05:54,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:05:54,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1010132374, now seen corresponding path program 1 times [2021-11-21 00:05:54,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:05:54,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010748848] [2021-11-21 00:05:54,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:05:54,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:05:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:05:55,515 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 00:05:55,517 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:05:55,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010748848] [2021-11-21 00:05:55,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010748848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:05:55,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:05:55,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:05:55,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372440964] [2021-11-21 00:05:55,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:05:55,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:05:55,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:05:55,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:05:55,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:05:55,578 INFO L87 Difference]: Start difference. First operand has 2192 states, 1279 states have (on average 1.2791243158717749) internal successors, (1636), 1307 states have internal predecessors, (1636), 761 states have call successors, (761), 149 states have call predecessors, (761), 148 states have return successors, (755), 753 states have call predecessors, (755), 755 states have call successors, (755) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-21 00:05:58,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:01,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:04,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:07,168 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:07,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:06:07,438 INFO L93 Difference]: Finished difference Result 6299 states and 9143 transitions. [2021-11-21 00:06:07,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:06:07,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 161 [2021-11-21 00:06:07,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:06:07,505 INFO L225 Difference]: With dead ends: 6299 [2021-11-21 00:06:07,505 INFO L226 Difference]: Without dead ends: 4121 [2021-11-21 00:06:07,527 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 00:06:07,534 INFO L933 BasicCegarLoop]: 3458 mSDtfsCounter, 2872 mSDsluCounter, 3054 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2872 SdHoareTripleChecker+Valid, 6141 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:06:07,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2872 Valid, 6141 Invalid, 766 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 759 Invalid, 4 Unknown, 0 Unchecked, 11.4s Time] [2021-11-21 00:06:07,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4121 states. [2021-11-21 00:06:08,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4121 to 4087. [2021-11-21 00:06:08,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4087 states, 2404 states have (on average 1.2774542429284526) internal successors, (3071), 2464 states have internal predecessors, (3071), 1398 states have call successors, (1398), 287 states have call predecessors, (1398), 281 states have return successors, (1399), 1374 states have call predecessors, (1399), 1394 states have call successors, (1399) [2021-11-21 00:06:08,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4087 states to 4087 states and 5868 transitions. [2021-11-21 00:06:08,075 INFO L78 Accepts]: Start accepts. Automaton has 4087 states and 5868 transitions. Word has length 161 [2021-11-21 00:06:08,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:06:08,080 INFO L470 AbstractCegarLoop]: Abstraction has 4087 states and 5868 transitions. [2021-11-21 00:06:08,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-21 00:06:08,085 INFO L276 IsEmpty]: Start isEmpty. Operand 4087 states and 5868 transitions. [2021-11-21 00:06:08,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-21 00:06:08,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:06:08,102 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] [2021-11-21 00:06:08,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:06:08,104 INFO L402 AbstractCegarLoop]: === Iteration 2 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:06:08,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:06:08,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1581564071, now seen corresponding path program 1 times [2021-11-21 00:06:08,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:06:08,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149962182] [2021-11-21 00:06:08,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:08,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:06:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:08,580 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 00:06:08,580 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:06:08,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149962182] [2021-11-21 00:06:08,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149962182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:06:08,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:06:08,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:06:08,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877529788] [2021-11-21 00:06:08,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:06:08,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:06:08,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:06:08,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:06:08,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:06:08,587 INFO L87 Difference]: Start difference. First operand 4087 states and 5868 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-21 00:06:11,060 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:13,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:15,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:18,191 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:20,807 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:21,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:06:21,270 INFO L93 Difference]: Finished difference Result 12004 states and 17231 transitions. [2021-11-21 00:06:21,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:06:21,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 161 [2021-11-21 00:06:21,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:06:21,370 INFO L225 Difference]: With dead ends: 12004 [2021-11-21 00:06:21,370 INFO L226 Difference]: Without dead ends: 7946 [2021-11-21 00:06:21,400 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 00:06:21,401 INFO L933 BasicCegarLoop]: 3454 mSDtfsCounter, 2846 mSDsluCounter, 3079 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2852 SdHoareTripleChecker+Valid, 6162 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:06:21,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2852 Valid, 6162 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 782 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2021-11-21 00:06:21,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7946 states. [2021-11-21 00:06:21,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7946 to 7938. [2021-11-21 00:06:21,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7938 states, 4695 states have (on average 1.2775292864749734) internal successors, (5998), 4806 states have internal predecessors, (5998), 2687 states have call successors, (2687), 563 states have call predecessors, (2687), 552 states have return successors, (2702), 2645 states have call predecessors, (2702), 2683 states have call successors, (2702) [2021-11-21 00:06:22,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7938 states to 7938 states and 11387 transitions. [2021-11-21 00:06:22,040 INFO L78 Accepts]: Start accepts. Automaton has 7938 states and 11387 transitions. Word has length 161 [2021-11-21 00:06:22,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:06:22,042 INFO L470 AbstractCegarLoop]: Abstraction has 7938 states and 11387 transitions. [2021-11-21 00:06:22,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-21 00:06:22,043 INFO L276 IsEmpty]: Start isEmpty. Operand 7938 states and 11387 transitions. [2021-11-21 00:06:22,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-21 00:06:22,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:06:22,047 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, 1, 1, 1, 1, 1] [2021-11-21 00:06:22,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:06:22,047 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:06:22,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:06:22,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1208042098, now seen corresponding path program 1 times [2021-11-21 00:06:22,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:06:22,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534779059] [2021-11-21 00:06:22,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:22,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:06:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:22,370 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 00:06:22,371 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:06:22,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534779059] [2021-11-21 00:06:22,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534779059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:06:22,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:06:22,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:06:22,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471524547] [2021-11-21 00:06:22,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:06:22,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:06:22,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:06:22,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:06:22,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:06:22,375 INFO L87 Difference]: Start difference. First operand 7938 states and 11387 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-21 00:06:24,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:27,945 WARN L515 Checker$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 00:06:30,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:32,505 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:35,327 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:35,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:06:35,815 INFO L93 Difference]: Finished difference Result 23566 states and 33867 transitions. [2021-11-21 00:06:35,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:06:35,817 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 174 [2021-11-21 00:06:35,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:06:36,015 INFO L225 Difference]: With dead ends: 23566 [2021-11-21 00:06:36,015 INFO L226 Difference]: Without dead ends: 15657 [2021-11-21 00:06:36,076 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 00:06:36,079 INFO L933 BasicCegarLoop]: 3806 mSDtfsCounter, 2935 mSDsluCounter, 3080 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 5 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2941 SdHoareTripleChecker+Valid, 6515 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:06:36,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2941 Valid, 6515 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 824 Invalid, 4 Unknown, 0 Unchecked, 12.8s Time] [2021-11-21 00:06:36,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15657 states. [2021-11-21 00:06:37,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15657 to 15616. [2021-11-21 00:06:37,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15616 states, 9264 states have (on average 1.2786053540587219) internal successors, (11845), 9491 states have internal predecessors, (11845), 5264 states have call successors, (5264), 1113 states have call predecessors, (5264), 1084 states have return successors, (5350), 5157 states have call predecessors, (5350), 5260 states have call successors, (5350) [2021-11-21 00:06:37,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15616 states to 15616 states and 22459 transitions. [2021-11-21 00:06:37,359 INFO L78 Accepts]: Start accepts. Automaton has 15616 states and 22459 transitions. Word has length 174 [2021-11-21 00:06:37,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:06:37,361 INFO L470 AbstractCegarLoop]: Abstraction has 15616 states and 22459 transitions. [2021-11-21 00:06:37,361 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-21 00:06:37,361 INFO L276 IsEmpty]: Start isEmpty. Operand 15616 states and 22459 transitions. [2021-11-21 00:06:37,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-21 00:06:37,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:06:37,369 INFO L514 BasicCegarLoop]: trace histogram [16, 14, 14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:06:37,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:06:37,369 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:06:37,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:06:37,370 INFO L85 PathProgramCache]: Analyzing trace with hash -370441076, now seen corresponding path program 1 times [2021-11-21 00:06:37,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:06:37,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813649314] [2021-11-21 00:06:37,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:37,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:06:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2021-11-21 00:06:37,639 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:06:37,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813649314] [2021-11-21 00:06:37,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813649314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:06:37,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:06:37,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:06:37,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14361297] [2021-11-21 00:06:37,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:06:37,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:06:37,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:06:37,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:06:37,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:06:37,642 INFO L87 Difference]: Start difference. First operand 15616 states and 22459 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 00:06:39,899 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:45,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:46,748 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:49,534 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:49,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:06:49,877 INFO L93 Difference]: Finished difference Result 35327 states and 50764 transitions. [2021-11-21 00:06:49,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:06:49,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 179 [2021-11-21 00:06:49,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:06:49,997 INFO L225 Difference]: With dead ends: 35327 [2021-11-21 00:06:49,997 INFO L226 Difference]: Without dead ends: 19740 [2021-11-21 00:06:50,077 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 00:06:50,078 INFO L933 BasicCegarLoop]: 3601 mSDtfsCounter, 2915 mSDsluCounter, 3114 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2915 SdHoareTripleChecker+Valid, 6340 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:06:50,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2915 Valid, 6340 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 778 Invalid, 3 Unknown, 0 Unchecked, 11.5s Time] [2021-11-21 00:06:50,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19740 states. [2021-11-21 00:06:51,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19740 to 19650. [2021-11-21 00:06:51,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19650 states, 11638 states have (on average 1.2777109468980925) internal successors, (14870), 11933 states have internal predecessors, (14870), 6625 states have call successors, (6625), 1415 states have call predecessors, (6625), 1383 states have return successors, (6723), 6487 states have call predecessors, (6723), 6621 states have call successors, (6723) [2021-11-21 00:06:51,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19650 states to 19650 states and 28218 transitions. [2021-11-21 00:06:51,659 INFO L78 Accepts]: Start accepts. Automaton has 19650 states and 28218 transitions. Word has length 179 [2021-11-21 00:06:51,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:06:51,660 INFO L470 AbstractCegarLoop]: Abstraction has 19650 states and 28218 transitions. [2021-11-21 00:06:51,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 00:06:51,661 INFO L276 IsEmpty]: Start isEmpty. Operand 19650 states and 28218 transitions. [2021-11-21 00:06:51,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-21 00:06:51,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:06:51,666 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:06:51,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:06:51,667 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:06:51,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:06:51,668 INFO L85 PathProgramCache]: Analyzing trace with hash 745362516, now seen corresponding path program 1 times [2021-11-21 00:06:51,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:06:51,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433766858] [2021-11-21 00:06:51,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:51,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:06:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:52,197 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 00:06:52,197 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:06:52,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433766858] [2021-11-21 00:06:52,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433766858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:06:52,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:06:52,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:06:52,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584419178] [2021-11-21 00:06:52,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:06:52,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:06:52,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:06:52,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:06:52,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:06:52,200 INFO L87 Difference]: Start difference. First operand 19650 states and 28218 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 00:06:55,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:58,006 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:00,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:04,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:04,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:04,455 INFO L93 Difference]: Finished difference Result 47486 states and 67845 transitions. [2021-11-21 00:07:04,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:07:04,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 183 [2021-11-21 00:07:04,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:04,632 INFO L225 Difference]: With dead ends: 47486 [2021-11-21 00:07:04,632 INFO L226 Difference]: Without dead ends: 27865 [2021-11-21 00:07:04,701 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 00:07:04,702 INFO L933 BasicCegarLoop]: 3202 mSDtfsCounter, 1882 mSDsluCounter, 3019 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1882 SdHoareTripleChecker+Valid, 5879 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:04,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1882 Valid, 5879 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 810 Invalid, 4 Unknown, 0 Unchecked, 11.4s Time] [2021-11-21 00:07:04,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27865 states. [2021-11-21 00:07:06,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27865 to 27834. [2021-11-21 00:07:06,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27834 states, 16391 states have (on average 1.26575559758404) internal successors, (20747), 16847 states have internal predecessors, (20747), 9332 states have call successors, (9332), 2169 states have call predecessors, (9332), 2107 states have return successors, (9498), 9086 states have call predecessors, (9498), 9328 states have call successors, (9498) [2021-11-21 00:07:06,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27834 states to 27834 states and 39577 transitions. [2021-11-21 00:07:06,507 INFO L78 Accepts]: Start accepts. Automaton has 27834 states and 39577 transitions. Word has length 183 [2021-11-21 00:07:06,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:06,509 INFO L470 AbstractCegarLoop]: Abstraction has 27834 states and 39577 transitions. [2021-11-21 00:07:06,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 00:07:06,509 INFO L276 IsEmpty]: Start isEmpty. Operand 27834 states and 39577 transitions. [2021-11-21 00:07:06,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-21 00:07:06,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:06,515 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:07:06,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:07:06,516 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:07:06,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:06,517 INFO L85 PathProgramCache]: Analyzing trace with hash -77287633, now seen corresponding path program 1 times [2021-11-21 00:07:06,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:07:06,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484274280] [2021-11-21 00:07:06,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:06,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:07:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:06,889 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2021-11-21 00:07:06,889 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:07:06,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484274280] [2021-11-21 00:07:06,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484274280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:06,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:06,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:07:06,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61305644] [2021-11-21 00:07:06,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:06,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:07:06,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:07:06,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:07:06,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:07:06,892 INFO L87 Difference]: Start difference. First operand 27834 states and 39577 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-21 00:07:10,489 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:14,027 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:16,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:19,052 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:20,658 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:22,697 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:28,545 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:28,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:28,767 INFO L93 Difference]: Finished difference Result 37571 states and 53226 transitions. [2021-11-21 00:07:28,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:07:28,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 203 [2021-11-21 00:07:28,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:29,032 INFO L225 Difference]: With dead ends: 37571 [2021-11-21 00:07:29,032 INFO L226 Difference]: Without dead ends: 37569 [2021-11-21 00:07:29,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:07:29,059 INFO L933 BasicCegarLoop]: 3208 mSDtfsCounter, 1874 mSDsluCounter, 10247 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 12307 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:29,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1889 Valid, 12307 Invalid, 1560 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1553 Invalid, 5 Unknown, 0 Unchecked, 20.4s Time] [2021-11-21 00:07:29,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37569 states. [2021-11-21 00:07:31,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37569 to 37563. [2021-11-21 00:07:31,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37563 states, 22059 states have (on average 1.261389908880729) internal successors, (27825), 22689 states have internal predecessors, (27825), 12581 states have call successors, (12581), 3010 states have call predecessors, (12581), 2919 states have return successors, (12815), 12228 states have call predecessors, (12815), 12573 states have call successors, (12815) [2021-11-21 00:07:31,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37563 states to 37563 states and 53221 transitions. [2021-11-21 00:07:31,511 INFO L78 Accepts]: Start accepts. Automaton has 37563 states and 53221 transitions. Word has length 203 [2021-11-21 00:07:31,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:31,512 INFO L470 AbstractCegarLoop]: Abstraction has 37563 states and 53221 transitions. [2021-11-21 00:07:31,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-21 00:07:31,513 INFO L276 IsEmpty]: Start isEmpty. Operand 37563 states and 53221 transitions. [2021-11-21 00:07:31,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-21 00:07:31,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:31,524 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, 1, 1] [2021-11-21 00:07:31,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:07:31,524 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:07:31,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:31,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1389722416, now seen corresponding path program 1 times [2021-11-21 00:07:31,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:07:31,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789186333] [2021-11-21 00:07:31,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:31,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:07:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2021-11-21 00:07:32,347 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:07:32,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789186333] [2021-11-21 00:07:32,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789186333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:32,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:32,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:07:32,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336168616] [2021-11-21 00:07:32,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:32,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:07:32,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:07:32,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:07:32,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:07:32,350 INFO L87 Difference]: Start difference. First operand 37563 states and 53221 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, (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 00:07:35,196 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:37,233 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:39,320 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:41,893 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:44,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:47,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:50,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:50,249 INFO L93 Difference]: Finished difference Result 37772 states and 53494 transitions. [2021-11-21 00:07:50,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:07:50,250 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, (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 211 [2021-11-21 00:07:50,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:50,433 INFO L225 Difference]: With dead ends: 37772 [2021-11-21 00:07:50,434 INFO L226 Difference]: Without dead ends: 37770 [2021-11-21 00:07:50,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:07:50,454 INFO L933 BasicCegarLoop]: 3221 mSDtfsCounter, 1931 mSDsluCounter, 10268 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1945 SdHoareTripleChecker+Valid, 12340 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:50,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1945 Valid, 12340 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1556 Invalid, 3 Unknown, 0 Unchecked, 17.0s Time] [2021-11-21 00:07:50,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37770 states. [2021-11-21 00:07:52,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37770 to 37567. [2021-11-21 00:07:52,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37567 states, 22062 states have (on average 1.261354364971444) internal successors, (27828), 22692 states have internal predecessors, (27828), 12581 states have call successors, (12581), 3011 states have call predecessors, (12581), 2920 states have return successors, (12815), 12228 states have call predecessors, (12815), 12573 states have call successors, (12815) [2021-11-21 00:07:53,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37567 states to 37567 states and 53224 transitions. [2021-11-21 00:07:53,034 INFO L78 Accepts]: Start accepts. Automaton has 37567 states and 53224 transitions. Word has length 211 [2021-11-21 00:07:53,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:53,036 INFO L470 AbstractCegarLoop]: Abstraction has 37567 states and 53224 transitions. [2021-11-21 00:07:53,036 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, (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 00:07:53,036 INFO L276 IsEmpty]: Start isEmpty. Operand 37567 states and 53224 transitions. [2021-11-21 00:07:53,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-21 00:07:53,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:53,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:53,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:07:53,049 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:07:53,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:53,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1597001455, now seen corresponding path program 1 times [2021-11-21 00:07:53,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:07:53,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608508012] [2021-11-21 00:07:53,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:53,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:07:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:53,613 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 883 trivial. 0 not checked. [2021-11-21 00:07:53,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:07:53,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608508012] [2021-11-21 00:07:53,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608508012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:53,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:53,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:07:53,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169346371] [2021-11-21 00:07:53,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:53,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:07:53,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:07:53,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:07:53,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:07:53,617 INFO L87 Difference]: Start difference. First operand 37567 states and 53224 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 00:07:56,722 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:00,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:03,400 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:06,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:08:06,066 INFO L93 Difference]: Finished difference Result 37579 states and 53232 transitions. [2021-11-21 00:08:06,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:08:06,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 213 [2021-11-21 00:08:06,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:08:06,285 INFO L225 Difference]: With dead ends: 37579 [2021-11-21 00:08:06,285 INFO L226 Difference]: Without dead ends: 37577 [2021-11-21 00:08:06,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:08:06,307 INFO L933 BasicCegarLoop]: 3211 mSDtfsCounter, 1869 mSDsluCounter, 10244 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1882 SdHoareTripleChecker+Valid, 12310 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:08:06,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1882 Valid, 12310 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1552 Invalid, 3 Unknown, 0 Unchecked, 11.5s Time] [2021-11-21 00:08:06,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37577 states. [2021-11-21 00:08:08,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37577 to 37571. [2021-11-21 00:08:08,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37571 states, 22065 states have (on average 1.2613188307273964) internal successors, (27831), 22695 states have internal predecessors, (27831), 12581 states have call successors, (12581), 3012 states have call predecessors, (12581), 2921 states have return successors, (12815), 12228 states have call predecessors, (12815), 12573 states have call successors, (12815) [2021-11-21 00:08:08,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37571 states to 37571 states and 53227 transitions. [2021-11-21 00:08:08,413 INFO L78 Accepts]: Start accepts. Automaton has 37571 states and 53227 transitions. Word has length 213 [2021-11-21 00:08:08,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:08:08,414 INFO L470 AbstractCegarLoop]: Abstraction has 37571 states and 53227 transitions. [2021-11-21 00:08:08,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 00:08:08,414 INFO L276 IsEmpty]: Start isEmpty. Operand 37571 states and 53227 transitions. [2021-11-21 00:08:08,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-21 00:08:08,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:08:08,425 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 3, 3, 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] [2021-11-21 00:08:08,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:08:08,425 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:08:08,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:08:08,426 INFO L85 PathProgramCache]: Analyzing trace with hash -2118517201, now seen corresponding path program 1 times [2021-11-21 00:08:08,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:08:08,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160419008] [2021-11-21 00:08:08,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:08:08,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:08:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:08:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 891 trivial. 0 not checked. [2021-11-21 00:08:08,708 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:08:08,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160419008] [2021-11-21 00:08:08,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160419008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:08:08,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:08:08,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:08:08,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308024544] [2021-11-21 00:08:08,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:08:08,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:08:08,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:08:08,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:08:08,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:08:08,712 INFO L87 Difference]: Start difference. First operand 37571 states and 53227 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 00:08:11,185 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:13,317 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:15,356 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:17,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:20,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:23,081 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:26,537 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:29,667 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:30,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:08:30,499 INFO L93 Difference]: Finished difference Result 37892 states and 53646 transitions. [2021-11-21 00:08:30,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:08:30,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 218 [2021-11-21 00:08:30,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:08:30,713 INFO L225 Difference]: With dead ends: 37892 [2021-11-21 00:08:30,713 INFO L226 Difference]: Without dead ends: 37890 [2021-11-21 00:08:30,732 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 00:08:30,733 INFO L933 BasicCegarLoop]: 3267 mSDtfsCounter, 1928 mSDsluCounter, 10368 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1944 SdHoareTripleChecker+Valid, 12478 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:08:30,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1944 Valid, 12478 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1568 Invalid, 5 Unknown, 0 Unchecked, 20.8s Time] [2021-11-21 00:08:30,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37890 states. [2021-11-21 00:08:32,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37890 to 37883. [2021-11-21 00:08:32,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37883 states, 22244 states have (on average 1.2601150872145297) internal successors, (28030), 22878 states have internal predecessors, (28030), 12681 states have call successors, (12681), 3041 states have call predecessors, (12681), 2954 states have return successors, (12929), 12328 states have call predecessors, (12929), 12673 states have call successors, (12929) [2021-11-21 00:08:32,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37883 states to 37883 states and 53640 transitions. [2021-11-21 00:08:32,485 INFO L78 Accepts]: Start accepts. Automaton has 37883 states and 53640 transitions. Word has length 218 [2021-11-21 00:08:32,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:08:32,486 INFO L470 AbstractCegarLoop]: Abstraction has 37883 states and 53640 transitions. [2021-11-21 00:08:32,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 00:08:32,486 INFO L276 IsEmpty]: Start isEmpty. Operand 37883 states and 53640 transitions. [2021-11-21 00:08:32,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-21 00:08:32,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:08:32,498 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:08:32,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:08:32,498 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:08:32,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:08:32,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1519582692, now seen corresponding path program 1 times [2021-11-21 00:08:32,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:08:32,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763375800] [2021-11-21 00:08:32,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:08:32,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:08:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:08:32,757 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 911 trivial. 0 not checked. [2021-11-21 00:08:32,757 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:08:32,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763375800] [2021-11-21 00:08:32,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763375800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:08:32,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:08:32,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:08:32,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073622090] [2021-11-21 00:08:32,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:08:32,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:08:32,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:08:32,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:08:32,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:08:32,760 INFO L87 Difference]: Start difference. First operand 37883 states and 53640 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 00:08:35,200 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:38,212 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:39,634 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:42,532 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:45,321 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:49,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:51,805 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:52,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:08:52,680 INFO L93 Difference]: Finished difference Result 43066 states and 60651 transitions. [2021-11-21 00:08:52,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:08:52,681 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 227 [2021-11-21 00:08:52,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:08:52,895 INFO L225 Difference]: With dead ends: 43066 [2021-11-21 00:08:52,896 INFO L226 Difference]: Without dead ends: 43064 [2021-11-21 00:08:52,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:08:52,922 INFO L933 BasicCegarLoop]: 3243 mSDtfsCounter, 1822 mSDsluCounter, 10325 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 12406 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:08:52,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1834 Valid, 12406 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1576 Invalid, 6 Unknown, 0 Unchecked, 18.9s Time] [2021-11-21 00:08:52,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43064 states. [2021-11-21 00:08:54,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43064 to 43028. [2021-11-21 00:08:54,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43028 states, 25277 states have (on average 1.2554100565731692) internal successors, (31733), 25950 states have internal predecessors, (31733), 14305 states have call successors, (14305), 3530 states have call predecessors, (14305), 3442 states have return successors, (14568), 13927 states have call predecessors, (14568), 14297 states have call successors, (14568) [2021-11-21 00:08:55,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43028 states to 43028 states and 60606 transitions. [2021-11-21 00:08:55,103 INFO L78 Accepts]: Start accepts. Automaton has 43028 states and 60606 transitions. Word has length 227 [2021-11-21 00:08:55,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:08:55,104 INFO L470 AbstractCegarLoop]: Abstraction has 43028 states and 60606 transitions. [2021-11-21 00:08:55,104 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 00:08:55,104 INFO L276 IsEmpty]: Start isEmpty. Operand 43028 states and 60606 transitions. [2021-11-21 00:08:55,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-21 00:08:55,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:08:55,119 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] [2021-11-21 00:08:55,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 00:08:55,119 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:08:55,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:08:55,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1121427408, now seen corresponding path program 1 times [2021-11-21 00:08:55,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:08:55,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805578329] [2021-11-21 00:08:55,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:08:55,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:08:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:08:55,406 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 00:08:55,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:08:55,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805578329] [2021-11-21 00:08:55,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805578329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:08:55,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:08:55,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:08:55,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909353525] [2021-11-21 00:08:55,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:08:55,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:08:55,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:08:55,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:08:55,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:08:55,409 INFO L87 Difference]: Start difference. First operand 43028 states and 60606 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, (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 00:08:58,826 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:02,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:04,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:09,773 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:10,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:09:10,867 INFO L93 Difference]: Finished difference Result 43040 states and 60614 transitions. [2021-11-21 00:09:10,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:09:10,867 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, (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 231 [2021-11-21 00:09:10,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:09:11,054 INFO L225 Difference]: With dead ends: 43040 [2021-11-21 00:09:11,055 INFO L226 Difference]: Without dead ends: 43038 [2021-11-21 00:09:11,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:09:11,079 INFO L933 BasicCegarLoop]: 3267 mSDtfsCounter, 1864 mSDsluCounter, 10371 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 12478 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:09:11,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1878 Valid, 12478 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1575 Invalid, 4 Unknown, 0 Unchecked, 14.0s Time] [2021-11-21 00:09:11,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43038 states. [2021-11-21 00:09:13,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43038 to 43032. [2021-11-21 00:09:13,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43032 states, 25280 states have (on average 1.255379746835443) internal successors, (31736), 25953 states have internal predecessors, (31736), 14305 states have call successors, (14305), 3531 states have call predecessors, (14305), 3443 states have return successors, (14568), 13927 states have call predecessors, (14568), 14297 states have call successors, (14568) [2021-11-21 00:09:13,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43032 states to 43032 states and 60609 transitions. [2021-11-21 00:09:13,478 INFO L78 Accepts]: Start accepts. Automaton has 43032 states and 60609 transitions. Word has length 231 [2021-11-21 00:09:13,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:09:13,480 INFO L470 AbstractCegarLoop]: Abstraction has 43032 states and 60609 transitions. [2021-11-21 00:09:13,480 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, (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 00:09:13,480 INFO L276 IsEmpty]: Start isEmpty. Operand 43032 states and 60609 transitions. [2021-11-21 00:09:13,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-21 00:09:13,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:09:13,494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:09:13,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 00:09:13,494 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:09:13,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:09:13,495 INFO L85 PathProgramCache]: Analyzing trace with hash -2076275089, now seen corresponding path program 1 times [2021-11-21 00:09:13,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:09:13,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780714514] [2021-11-21 00:09:13,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:09:13,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:09:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:09:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 939 trivial. 0 not checked. [2021-11-21 00:09:13,763 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:09:13,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780714514] [2021-11-21 00:09:13,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780714514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:09:13,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:09:13,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:09:13,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330381080] [2021-11-21 00:09:13,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:09:13,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:09:13,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:09:13,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:09:13,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:09:13,766 INFO L87 Difference]: Start difference. First operand 43032 states and 60609 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 00:09:17,193 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:21,319 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:24,191 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:28,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:29,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:09:29,431 INFO L93 Difference]: Finished difference Result 43044 states and 60617 transitions. [2021-11-21 00:09:29,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:09:29,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 233 [2021-11-21 00:09:29,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:09:29,628 INFO L225 Difference]: With dead ends: 43044 [2021-11-21 00:09:29,628 INFO L226 Difference]: Without dead ends: 43042 [2021-11-21 00:09:29,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:09:29,648 INFO L933 BasicCegarLoop]: 3267 mSDtfsCounter, 1865 mSDsluCounter, 10371 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 12478 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:09:29,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1878 Valid, 12478 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1575 Invalid, 4 Unknown, 0 Unchecked, 14.5s Time] [2021-11-21 00:09:29,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43042 states. [2021-11-21 00:09:31,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43042 to 43036. [2021-11-21 00:09:31,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43036 states, 25283 states have (on average 1.2553494442906301) internal successors, (31739), 25956 states have internal predecessors, (31739), 14305 states have call successors, (14305), 3532 states have call predecessors, (14305), 3444 states have return successors, (14568), 13927 states have call predecessors, (14568), 14297 states have call successors, (14568) [2021-11-21 00:09:31,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43036 states to 43036 states and 60612 transitions. [2021-11-21 00:09:31,644 INFO L78 Accepts]: Start accepts. Automaton has 43036 states and 60612 transitions. Word has length 233 [2021-11-21 00:09:31,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:09:31,645 INFO L470 AbstractCegarLoop]: Abstraction has 43036 states and 60612 transitions. [2021-11-21 00:09:31,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 00:09:31,645 INFO L276 IsEmpty]: Start isEmpty. Operand 43036 states and 60612 transitions. [2021-11-21 00:09:31,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-21 00:09:31,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:09:31,661 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 8, 7, 7, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:09:31,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 00:09:31,661 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:09:31,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:09:31,662 INFO L85 PathProgramCache]: Analyzing trace with hash 332114608, now seen corresponding path program 1 times [2021-11-21 00:09:31,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:09:31,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298118316] [2021-11-21 00:09:31,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:09:31,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:09:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:09:31,926 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2021-11-21 00:09:31,926 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:09:31,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298118316] [2021-11-21 00:09:31,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298118316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:09:31,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:09:31,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:09:31,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493823160] [2021-11-21 00:09:31,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:09:31,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:09:31,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:09:31,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:09:31,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:09:31,928 INFO L87 Difference]: Start difference. First operand 43036 states and 60612 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, (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 00:09:36,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:38,316 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:41,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:43,844 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:46,532 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:49,234 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:52,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:53,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:09:53,198 INFO L93 Difference]: Finished difference Result 43049 states and 60621 transitions. [2021-11-21 00:09:53,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:09:53,199 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, (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) Word has length 241 [2021-11-21 00:09:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:09:53,348 INFO L225 Difference]: With dead ends: 43049 [2021-11-21 00:09:53,348 INFO L226 Difference]: Without dead ends: 43047 [2021-11-21 00:09:53,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:09:53,366 INFO L933 BasicCegarLoop]: 3277 mSDtfsCounter, 1927 mSDsluCounter, 10394 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1939 SdHoareTripleChecker+Valid, 12508 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:09:53,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1939 Valid, 12508 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1578 Invalid, 4 Unknown, 0 Unchecked, 19.9s Time] [2021-11-21 00:09:53,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43047 states. [2021-11-21 00:09:55,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43047 to 43040. [2021-11-21 00:09:55,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43040 states, 25286 states have (on average 1.2553191489361701) internal successors, (31742), 25959 states have internal predecessors, (31742), 14305 states have call successors, (14305), 3533 states have call predecessors, (14305), 3445 states have return successors, (14568), 13927 states have call predecessors, (14568), 14297 states have call successors, (14568) [2021-11-21 00:09:55,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43040 states to 43040 states and 60615 transitions. [2021-11-21 00:09:55,198 INFO L78 Accepts]: Start accepts. Automaton has 43040 states and 60615 transitions. Word has length 241 [2021-11-21 00:09:55,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:09:55,199 INFO L470 AbstractCegarLoop]: Abstraction has 43040 states and 60615 transitions. [2021-11-21 00:09:55,199 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, (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 00:09:55,199 INFO L276 IsEmpty]: Start isEmpty. Operand 43040 states and 60615 transitions. [2021-11-21 00:09:55,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-21 00:09:55,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:09:55,211 INFO L514 BasicCegarLoop]: trace histogram [20, 14, 14, 14, 14, 14, 14, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:09:55,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 00:09:55,211 INFO L402 AbstractCegarLoop]: === Iteration 14 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:09:55,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:09:55,212 INFO L85 PathProgramCache]: Analyzing trace with hash 373142010, now seen corresponding path program 1 times [2021-11-21 00:09:55,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:09:55,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617285190] [2021-11-21 00:09:55,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:09:55,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:09:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:09:55,647 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 983 trivial. 0 not checked. [2021-11-21 00:09:55,647 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:09:55,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617285190] [2021-11-21 00:09:55,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617285190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:09:55,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:09:55,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:09:55,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612917602] [2021-11-21 00:09:55,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:09:55,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:09:55,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:09:55,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:09:55,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:09:55,649 INFO L87 Difference]: Start difference. First operand 43040 states and 60615 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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 00:09:58,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:02,507 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:05,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:09,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:09,729 INFO L93 Difference]: Finished difference Result 67770 states and 95838 transitions. [2021-11-21 00:10:09,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:10:09,730 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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 236 [2021-11-21 00:10:09,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:10,146 INFO L225 Difference]: With dead ends: 67770 [2021-11-21 00:10:10,146 INFO L226 Difference]: Without dead ends: 67768 [2021-11-21 00:10:10,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:10:10,170 INFO L933 BasicCegarLoop]: 4043 mSDtfsCounter, 2789 mSDsluCounter, 12168 mSDsCounter, 0 mSdLazyCounter, 1925 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2790 SdHoareTripleChecker+Valid, 14810 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1925 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:10,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2790 Valid, 14810 Invalid, 1930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1925 Invalid, 3 Unknown, 0 Unchecked, 12.3s Time] [2021-11-21 00:10:10,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67768 states. [2021-11-21 00:10:12,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67768 to 67724. [2021-11-21 00:10:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67724 states, 39870 states have (on average 1.2596187609731628) internal successors, (50221), 40985 states have internal predecessors, (50221), 22550 states have call successors, (22550), 5472 states have call predecessors, (22550), 5300 states have return successors, (22989), 21874 states have call predecessors, (22989), 22542 states have call successors, (22989) [2021-11-21 00:10:13,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67724 states to 67724 states and 95760 transitions. [2021-11-21 00:10:13,342 INFO L78 Accepts]: Start accepts. Automaton has 67724 states and 95760 transitions. Word has length 236 [2021-11-21 00:10:13,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:13,343 INFO L470 AbstractCegarLoop]: Abstraction has 67724 states and 95760 transitions. [2021-11-21 00:10:13,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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 00:10:13,343 INFO L276 IsEmpty]: Start isEmpty. Operand 67724 states and 95760 transitions. [2021-11-21 00:10:13,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-21 00:10:13,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:13,357 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 9, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:10:13,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-21 00:10:13,358 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:10:13,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:13,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1157705263, now seen corresponding path program 1 times [2021-11-21 00:10:13,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:13,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589781486] [2021-11-21 00:10:13,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:13,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:10:13,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2021-11-21 00:10:13,638 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:13,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589781486] [2021-11-21 00:10:13,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589781486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:10:13,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:10:13,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:10:13,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813207015] [2021-11-21 00:10:13,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:10:13,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:10:13,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:13,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:10:13,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:10:13,641 INFO L87 Difference]: Start difference. First operand 67724 states and 95760 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-21 00:10:17,257 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:21,083 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:23,900 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:30,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:31,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:31,932 INFO L93 Difference]: Finished difference Result 67778 states and 95825 transitions. [2021-11-21 00:10:31,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:10:31,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 243 [2021-11-21 00:10:31,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:32,360 INFO L225 Difference]: With dead ends: 67778 [2021-11-21 00:10:32,360 INFO L226 Difference]: Without dead ends: 67776 [2021-11-21 00:10:32,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:10:32,387 INFO L933 BasicCegarLoop]: 4046 mSDtfsCounter, 2791 mSDsluCounter, 12153 mSDsCounter, 0 mSdLazyCounter, 1939 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2798 SdHoareTripleChecker+Valid, 14798 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1939 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:32,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2798 Valid, 14798 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1939 Invalid, 4 Unknown, 0 Unchecked, 16.4s Time] [2021-11-21 00:10:32,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67776 states. [2021-11-21 00:10:35,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67776 to 67755. [2021-11-21 00:10:35,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67755 states, 39879 states have (on average 1.2595852453672358) internal successors, (50231), 40994 states have internal predecessors, (50231), 22569 states have call successors, (22569), 5476 states have call predecessors, (22569), 5303 states have return successors, (23004), 21892 states have call predecessors, (23004), 22557 states have call successors, (23004) [2021-11-21 00:10:35,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67755 states to 67755 states and 95804 transitions. [2021-11-21 00:10:35,609 INFO L78 Accepts]: Start accepts. Automaton has 67755 states and 95804 transitions. Word has length 243 [2021-11-21 00:10:35,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:35,610 INFO L470 AbstractCegarLoop]: Abstraction has 67755 states and 95804 transitions. [2021-11-21 00:10:35,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-21 00:10:35,610 INFO L276 IsEmpty]: Start isEmpty. Operand 67755 states and 95804 transitions. [2021-11-21 00:10:35,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-21 00:10:35,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:35,625 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 10, 9, 9, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:10:35,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-21 00:10:35,626 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:10:35,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:35,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1797621040, now seen corresponding path program 1 times [2021-11-21 00:10:35,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:35,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546615810] [2021-11-21 00:10:35,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:35,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:10:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1030 trivial. 0 not checked. [2021-11-21 00:10:35,869 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:35,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546615810] [2021-11-21 00:10:35,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546615810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:10:35,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:10:35,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:10:35,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037861804] [2021-11-21 00:10:35,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:10:35,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:10:35,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:35,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:10:35,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:10:35,875 INFO L87 Difference]: Start difference. First operand 67755 states and 95804 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, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-21 00:10:38,524 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:41,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:44,740 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:47,873 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:53,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:54,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:54,794 INFO L93 Difference]: Finished difference Result 67766 states and 95812 transitions. [2021-11-21 00:10:54,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:10:54,795 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, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 251 [2021-11-21 00:10:54,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:55,094 INFO L225 Difference]: With dead ends: 67766 [2021-11-21 00:10:55,094 INFO L226 Difference]: Without dead ends: 67764 [2021-11-21 00:10:55,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:10:55,123 INFO L933 BasicCegarLoop]: 3283 mSDtfsCounter, 1925 mSDsluCounter, 10408 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 12526 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:55,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1935 Valid, 12526 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1582 Invalid, 3 Unknown, 0 Unchecked, 16.6s Time] [2021-11-21 00:10:55,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67764 states. [2021-11-21 00:10:58,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67764 to 67759. [2021-11-21 00:10:58,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67759 states, 39882 states have (on average 1.2595657188706684) internal successors, (50234), 40997 states have internal predecessors, (50234), 22569 states have call successors, (22569), 5477 states have call predecessors, (22569), 5304 states have return successors, (23004), 21892 states have call predecessors, (23004), 22557 states have call successors, (23004) [2021-11-21 00:10:58,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67759 states to 67759 states and 95807 transitions. [2021-11-21 00:10:58,590 INFO L78 Accepts]: Start accepts. Automaton has 67759 states and 95807 transitions. Word has length 251 [2021-11-21 00:10:58,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:58,590 INFO L470 AbstractCegarLoop]: Abstraction has 67759 states and 95807 transitions. [2021-11-21 00:10:58,590 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, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-21 00:10:58,591 INFO L276 IsEmpty]: Start isEmpty. Operand 67759 states and 95807 transitions. [2021-11-21 00:10:58,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-21 00:10:58,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:58,604 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 11, 10, 10, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:10:58,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-21 00:10:58,605 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:10:58,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:58,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1413533167, now seen corresponding path program 1 times [2021-11-21 00:10:58,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:58,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482017054] [2021-11-21 00:10:58,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:58,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:10:58,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1059 trivial. 0 not checked. [2021-11-21 00:10:58,873 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:58,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482017054] [2021-11-21 00:10:58,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482017054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:10:58,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:10:58,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:10:58,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13963497] [2021-11-21 00:10:58,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:10:58,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:10:58,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:58,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:10:58,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:10:58,876 INFO L87 Difference]: Start difference. First operand 67759 states and 95807 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-21 00:11:02,001 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:04,453 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:07,445 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:09,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:12,006 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:13,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:15,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:19,377 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:22,141 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:23,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:11:23,170 INFO L93 Difference]: Finished difference Result 67770 states and 95815 transitions. [2021-11-21 00:11:23,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:11:23,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 253 [2021-11-21 00:11:23,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:11:23,418 INFO L225 Difference]: With dead ends: 67770 [2021-11-21 00:11:23,418 INFO L226 Difference]: Without dead ends: 67768 [2021-11-21 00:11:23,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:11:23,443 INFO L933 BasicCegarLoop]: 3283 mSDtfsCounter, 1926 mSDsluCounter, 10411 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 12526 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:11:23,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1935 Valid, 12526 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1584 Invalid, 4 Unknown, 0 Unchecked, 22.5s Time] [2021-11-21 00:11:23,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67768 states. [2021-11-21 00:11:26,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67768 to 67763. [2021-11-21 00:11:26,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67763 states, 39885 states have (on average 1.2595461953115206) internal successors, (50237), 41000 states have internal predecessors, (50237), 22569 states have call successors, (22569), 5478 states have call predecessors, (22569), 5305 states have return successors, (23004), 21892 states have call predecessors, (23004), 22557 states have call successors, (23004) [2021-11-21 00:11:26,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67763 states to 67763 states and 95810 transitions. [2021-11-21 00:11:26,444 INFO L78 Accepts]: Start accepts. Automaton has 67763 states and 95810 transitions. Word has length 253 [2021-11-21 00:11:26,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:11:26,445 INFO L470 AbstractCegarLoop]: Abstraction has 67763 states and 95810 transitions. [2021-11-21 00:11:26,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-21 00:11:26,445 INFO L276 IsEmpty]: Start isEmpty. Operand 67763 states and 95810 transitions. [2021-11-21 00:11:26,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-21 00:11:26,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:11:26,466 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 12, 11, 11, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:11:26,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-21 00:11:26,466 INFO L402 AbstractCegarLoop]: === Iteration 18 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:11:26,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:11:26,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1485854046, now seen corresponding path program 1 times [2021-11-21 00:11:26,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:11:26,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889370404] [2021-11-21 00:11:26,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:26,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms