./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-dlink-dl2k.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_6a407565-8943-49e9-84df-0196f9317ac6/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a407565-8943-49e9-84df-0196f9317ac6/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_6a407565-8943-49e9-84df-0196f9317ac6/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a407565-8943-49e9-84df-0196f9317ac6/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-dlink-dl2k.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a407565-8943-49e9-84df-0196f9317ac6/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_6a407565-8943-49e9-84df-0196f9317ac6/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 e373372610053a8b3f90a6fe69a2e2f77f1b445737e9545423fdaf4f64c3f09c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:15:37,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:15:37,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:15:37,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:15:37,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:15:37,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:15:37,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:15:37,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:15:37,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:15:37,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:15:37,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:15:37,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:15:37,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:15:37,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:15:37,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:15:37,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:15:37,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:15:37,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:15:37,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:15:37,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:15:37,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:15:37,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:15:37,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:15:37,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:15:37,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:15:37,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:15:37,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:15:37,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:15:37,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:15:37,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:15:37,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:15:37,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:15:37,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:15:37,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:15:37,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:15:37,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:15:37,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:15:37,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:15:37,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:15:37,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:15:37,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:15:37,597 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a407565-8943-49e9-84df-0196f9317ac6/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:15:37,634 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:15:37,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:15:37,635 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:15:37,635 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:15:37,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:15:37,636 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:15:37,636 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:15:37,637 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:15:37,637 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:15:37,637 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:15:37,637 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:15:37,638 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:15:37,638 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:15:37,638 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:15:37,638 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:15:37,639 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:15:37,639 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:15:37,639 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:15:37,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:15:37,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:15:37,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:15:37,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:15:37,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:15:37,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:15:37,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:15:37,642 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:15:37,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:15:37,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:15:37,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:15:37,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:15:37,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:15:37,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:15:37,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:15:37,644 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:15:37,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:15:37,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:15:37,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:15:37,645 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:15:37,646 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_6a407565-8943-49e9-84df-0196f9317ac6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a407565-8943-49e9-84df-0196f9317ac6/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e373372610053a8b3f90a6fe69a2e2f77f1b445737e9545423fdaf4f64c3f09c [2021-11-21 01:15:37,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:15:38,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:15:38,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:15:38,040 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:15:38,041 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:15:38,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a407565-8943-49e9-84df-0196f9317ac6/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2021-11-21 01:15:38,122 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a407565-8943-49e9-84df-0196f9317ac6/bin/utaipan-TEXQjIfE4P/data/c321dc33e/df2bd7733a164b8aa37ce9ac4340f97f/FLAGf7c0beffc [2021-11-21 01:15:39,138 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:15:39,139 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a407565-8943-49e9-84df-0196f9317ac6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2021-11-21 01:15:39,252 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a407565-8943-49e9-84df-0196f9317ac6/bin/utaipan-TEXQjIfE4P/data/c321dc33e/df2bd7733a164b8aa37ce9ac4340f97f/FLAGf7c0beffc [2021-11-21 01:15:39,469 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a407565-8943-49e9-84df-0196f9317ac6/bin/utaipan-TEXQjIfE4P/data/c321dc33e/df2bd7733a164b8aa37ce9ac4340f97f [2021-11-21 01:15:39,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:15:39,472 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:15:39,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:15:39,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:15:39,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:15:39,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:15:39" (1/1) ... [2021-11-21 01:15:39,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55bac385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:39, skipping insertion in model container [2021-11-21 01:15:39,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:15:39" (1/1) ... [2021-11-21 01:15:39,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:15:39,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:15:42,578 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_6a407565-8943-49e9-84df-0196f9317ac6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330704,330717] [2021-11-21 01:15:42,581 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_6a407565-8943-49e9-84df-0196f9317ac6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330873,330886] [2021-11-21 01:15:42,582 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_6a407565-8943-49e9-84df-0196f9317ac6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331040,331053] [2021-11-21 01:15:42,583 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_6a407565-8943-49e9-84df-0196f9317ac6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331208,331221] [2021-11-21 01:15:42,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:15:42,641 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:15:43,024 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_6a407565-8943-49e9-84df-0196f9317ac6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330704,330717] [2021-11-21 01:15:43,024 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_6a407565-8943-49e9-84df-0196f9317ac6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330873,330886] [2021-11-21 01:15:43,025 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_6a407565-8943-49e9-84df-0196f9317ac6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331040,331053] [2021-11-21 01:15:43,025 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_6a407565-8943-49e9-84df-0196f9317ac6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331208,331221] [2021-11-21 01:15:43,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:15:43,271 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:15:43,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:43 WrapperNode [2021-11-21 01:15:43,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:15:43,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:15:43,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:15:43,274 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:15:43,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:43" (1/1) ... [2021-11-21 01:15:43,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:43" (1/1) ... [2021-11-21 01:15:43,637 INFO L137 Inliner]: procedures = 423, calls = 1852, calls flagged for inlining = 204, calls inlined = 187, statements flattened = 4797 [2021-11-21 01:15:43,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:15:43,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:15:43,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:15:43,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:15:43,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:43" (1/1) ... [2021-11-21 01:15:43,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:43" (1/1) ... [2021-11-21 01:15:43,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:43" (1/1) ... [2021-11-21 01:15:43,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:43" (1/1) ... [2021-11-21 01:15:43,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:43" (1/1) ... [2021-11-21 01:15:43,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:43" (1/1) ... [2021-11-21 01:15:43,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:43" (1/1) ... [2021-11-21 01:15:43,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:15:43,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:15:43,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:15:43,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:15:43,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:43" (1/1) ... [2021-11-21 01:15:43,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:15:43,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a407565-8943-49e9-84df-0196f9317ac6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:15:43,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a407565-8943-49e9-84df-0196f9317ac6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:15:43,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a407565-8943-49e9-84df-0196f9317ac6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:15:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 01:15:44,017 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 01:15:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:15:44,017 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:15:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:15:44,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:15:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:15:44,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:15:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 01:15:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 01:15:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-21 01:15:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-21 01:15:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-21 01:15:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-21 01:15:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure desc_to_dma [2021-11-21 01:15:44,019 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_to_dma [2021-11-21 01:15:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-21 01:15:44,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-21 01:15:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2021-11-21 01:15:44,019 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2021-11-21 01:15:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:15:44,019 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:15:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:15:44,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:15:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure mii_write [2021-11-21 01:15:44,020 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_write [2021-11-21 01:15:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 01:15:44,020 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 01:15:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-21 01:15:44,021 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-21 01:15:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 01:15:44,021 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 01:15:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:15:44,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:15:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 01:15:44,021 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 01:15:44,022 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast [2021-11-21 01:15:44,022 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast [2021-11-21 01:15:44,022 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-21 01:15:44,022 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-21 01:15:44,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:15:44,023 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2021-11-21 01:15:44,023 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2021-11-21 01:15:44,023 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:15:44,024 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:15:44,024 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 01:15:44,025 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 01:15:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:15:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 01:15:44,025 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 01:15:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 01:15:44,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 01:15:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:15:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:15:44,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:15:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:15:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 01:15:44,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 01:15:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:15:44,027 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:15:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 01:15:44,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 01:15:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:15:44,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:15:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 01:15:44,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 01:15:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-21 01:15:44,028 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-21 01:15:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 01:15:44,029 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 01:15:44,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:15:44,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:15:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:15:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 01:15:44,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 01:15:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 01:15:44,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 01:15:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure rio_close [2021-11-21 01:15:44,031 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_close [2021-11-21 01:15:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:15:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure mii_getbit [2021-11-21 01:15:44,032 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_getbit [2021-11-21 01:15:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:15:44,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:15:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 01:15:44,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 01:15:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:15:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-21 01:15:44,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-21 01:15:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:15:44,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:15:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:15:44,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:15:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure mii_read [2021-11-21 01:15:44,035 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_read [2021-11-21 01:15:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-21 01:15:44,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-21 01:15:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 01:15:44,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 01:15:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-21 01:15:44,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-21 01:15:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:15:44,036 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:15:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-21 01:15:44,037 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-21 01:15:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 01:15:44,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 01:15:44,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:15:44,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:15:44,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:15:44,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:15:44,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:15:44,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:15:44,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:15:44,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:15:44,047 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 01:15:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 01:15:44,048 INFO L130 BoogieDeclarations]: Found specification of procedure get_stats [2021-11-21 01:15:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure get_stats [2021-11-21 01:15:44,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 01:15:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 01:15:44,048 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-21 01:15:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-21 01:15:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-21 01:15:44,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-21 01:15:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 01:15:44,049 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 01:15:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2021-11-21 01:15:44,049 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2021-11-21 01:15:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-21 01:15:44,049 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-21 01:15:44,050 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 01:15:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 01:15:44,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:15:44,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_netdev_private [2021-11-21 01:15:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_netdev_private [2021-11-21 01:15:44,050 INFO L130 BoogieDeclarations]: Found specification of procedure rio_open [2021-11-21 01:15:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_open [2021-11-21 01:15:44,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:15:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-21 01:15:44,051 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-21 01:15:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_netdev_private [2021-11-21 01:15:44,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_netdev_private [2021-11-21 01:15:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:15:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 01:15:44,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 01:15:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 01:15:44,052 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 01:15:44,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:15:44,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:15:44,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_rx_lock_of_netdev_private [2021-11-21 01:15:44,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_rx_lock_of_netdev_private [2021-11-21 01:15:44,052 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 01:15:44,052 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 01:15:44,052 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 01:15:44,052 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 01:15:44,053 INFO L130 BoogieDeclarations]: Found specification of procedure rio_free_tx [2021-11-21 01:15:44,053 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_free_tx [2021-11-21 01:15:44,053 INFO L130 BoogieDeclarations]: Found specification of procedure rio_tx_timeout [2021-11-21 01:15:44,053 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_tx_timeout [2021-11-21 01:15:44,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rx_lock_of_netdev_private [2021-11-21 01:15:44,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rx_lock_of_netdev_private [2021-11-21 01:15:44,053 INFO L130 BoogieDeclarations]: Found specification of procedure rio_remove1 [2021-11-21 01:15:44,053 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_remove1 [2021-11-21 01:15:44,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:15:44,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:15:44,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:15:44,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rio_driver_exit_14_2 [2021-11-21 01:15:44,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rio_driver_exit_14_2 [2021-11-21 01:15:44,054 INFO L130 BoogieDeclarations]: Found specification of procedure mii_send_bits [2021-11-21 01:15:44,054 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_send_bits [2021-11-21 01:15:44,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:15:44,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:15:44,055 INFO L130 BoogieDeclarations]: Found specification of procedure mii_set_media [2021-11-21 01:15:44,055 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_set_media [2021-11-21 01:15:44,055 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-21 01:15:44,055 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-21 01:15:44,055 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 01:15:44,055 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 01:15:44,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:15:44,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:15:44,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:15:44,848 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:15:44,851 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:15:44,933 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:15:47,905 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 01:15:47,973 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:15:49,848 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:15:49,848 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-21 01:15:49,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:15:49 BoogieIcfgContainer [2021-11-21 01:15:49,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:15:49,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:15:49,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:15:49,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:15:49,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:15:39" (1/3) ... [2021-11-21 01:15:49,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b6719f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:15:49, skipping insertion in model container [2021-11-21 01:15:49,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:15:43" (2/3) ... [2021-11-21 01:15:49,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b6719f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:15:49, skipping insertion in model container [2021-11-21 01:15:49,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:15:49" (3/3) ... [2021-11-21 01:15:49,861 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2021-11-21 01:15:49,866 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:15:49,866 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 01:15:49,919 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:15:49,925 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:15:49,925 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 01:15:49,972 INFO L276 IsEmpty]: Start isEmpty. Operand has 1340 states, 778 states have (on average 1.2776349614395888) internal successors, (994), 811 states have internal predecessors, (994), 482 states have call successors, (482), 83 states have call predecessors, (482), 82 states have return successors, (476), 473 states have call predecessors, (476), 476 states have call successors, (476) [2021-11-21 01:15:49,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-21 01:15:49,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:15:49,987 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:15:49,987 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:15:49,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:15:49,992 INFO L85 PathProgramCache]: Analyzing trace with hash -899849820, now seen corresponding path program 1 times [2021-11-21 01:15:50,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:15:50,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195435227] [2021-11-21 01:15:50,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:15:50,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:15:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:15:50,660 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-21 01:15:50,660 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:15:50,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195435227] [2021-11-21 01:15:50,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195435227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:15:50,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:15:50,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:15:50,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21949250] [2021-11-21 01:15:50,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:15:50,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:15:50,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:15:50,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:15:50,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:15:50,737 INFO L87 Difference]: Start difference. First operand has 1340 states, 778 states have (on average 1.2776349614395888) internal successors, (994), 811 states have internal predecessors, (994), 482 states have call successors, (482), 83 states have call predecessors, (482), 82 states have return successors, (476), 473 states have call predecessors, (476), 476 states have call successors, (476) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-21 01:15:53,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:15:55,864 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 01:15:55,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:15:55,903 INFO L93 Difference]: Finished difference Result 3747 states and 5498 transitions. [2021-11-21 01:15:55,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:15:55,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2021-11-21 01:15:55,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:15:55,958 INFO L225 Difference]: With dead ends: 3747 [2021-11-21 01:15:55,959 INFO L226 Difference]: Without dead ends: 2416 [2021-11-21 01:15:55,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:15:55,979 INFO L933 BasicCegarLoop]: 2051 mSDtfsCounter, 1601 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 3678 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:15:55,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1601 Valid, 3678 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 525 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2021-11-21 01:15:56,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2021-11-21 01:15:56,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2401. [2021-11-21 01:15:56,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2401 states, 1392 states have (on average 1.2658045977011494) internal successors, (1762), 1445 states have internal predecessors, (1762), 851 states have call successors, (851), 156 states have call predecessors, (851), 155 states have return successors, (847), 842 states have call predecessors, (847), 847 states have call successors, (847) [2021-11-21 01:15:56,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 3460 transitions. [2021-11-21 01:15:56,249 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 3460 transitions. Word has length 111 [2021-11-21 01:15:56,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:15:56,250 INFO L470 AbstractCegarLoop]: Abstraction has 2401 states and 3460 transitions. [2021-11-21 01:15:56,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-21 01:15:56,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 3460 transitions. [2021-11-21 01:15:56,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-21 01:15:56,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:15:56,256 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:15:56,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:15:56,257 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:15:56,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:15:56,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1818111408, now seen corresponding path program 1 times [2021-11-21 01:15:56,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:15:56,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383225442] [2021-11-21 01:15:56,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:15:56,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:15:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:15:56,521 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-21 01:15:56,522 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:15:56,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383225442] [2021-11-21 01:15:56,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383225442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:15:56,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:15:56,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:15:56,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434076934] [2021-11-21 01:15:56,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:15:56,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:15:56,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:15:56,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:15:56,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:15:56,526 INFO L87 Difference]: Start difference. First operand 2401 states and 3460 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-21 01:15:59,817 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:01,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:01,497 INFO L93 Difference]: Finished difference Result 6901 states and 9931 transitions. [2021-11-21 01:16:01,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:16:01,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2021-11-21 01:16:01,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:01,538 INFO L225 Difference]: With dead ends: 6901 [2021-11-21 01:16:01,538 INFO L226 Difference]: Without dead ends: 4519 [2021-11-21 01:16:01,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:16:01,554 INFO L933 BasicCegarLoop]: 2073 mSDtfsCounter, 1623 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 3666 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:01,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1623 Valid, 3666 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 511 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-21 01:16:01,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4519 states. [2021-11-21 01:16:01,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4519 to 4478. [2021-11-21 01:16:01,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 2600 states have (on average 1.265) internal successors, (3289), 2701 states have internal predecessors, (3289), 1575 states have call successors, (1575), 303 states have call predecessors, (1575), 300 states have return successors, (1581), 1551 states have call predecessors, (1581), 1571 states have call successors, (1581) [2021-11-21 01:16:01,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 6445 transitions. [2021-11-21 01:16:01,924 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 6445 transitions. Word has length 115 [2021-11-21 01:16:01,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:01,925 INFO L470 AbstractCegarLoop]: Abstraction has 4478 states and 6445 transitions. [2021-11-21 01:16:01,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-21 01:16:01,927 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 6445 transitions. [2021-11-21 01:16:01,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-21 01:16:01,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:01,940 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:16:01,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:16:01,941 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:16:01,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:01,942 INFO L85 PathProgramCache]: Analyzing trace with hash 112315929, now seen corresponding path program 1 times [2021-11-21 01:16:01,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:16:01,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335685824] [2021-11-21 01:16:01,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:01,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:16:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:02,247 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2021-11-21 01:16:02,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:16:02,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335685824] [2021-11-21 01:16:02,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335685824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:02,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:02,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 01:16:02,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037254668] [2021-11-21 01:16:02,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:02,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:16:02,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:16:02,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:16:02,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:16:02,259 INFO L87 Difference]: Start difference. First operand 4478 states and 6445 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-21 01:16:09,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:13,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:13,906 INFO L93 Difference]: Finished difference Result 11681 states and 16736 transitions. [2021-11-21 01:16:13,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:16:13,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 129 [2021-11-21 01:16:13,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:13,969 INFO L225 Difference]: With dead ends: 11681 [2021-11-21 01:16:13,969 INFO L226 Difference]: Without dead ends: 7222 [2021-11-21 01:16:13,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:16:13,994 INFO L933 BasicCegarLoop]: 2341 mSDtfsCounter, 3678 mSDsluCounter, 4731 mSDsCounter, 0 mSdLazyCounter, 2643 mSolverCounterSat, 555 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3807 SdHoareTripleChecker+Valid, 6284 SdHoareTripleChecker+Invalid, 3199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 2643 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:13,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3807 Valid, 6284 Invalid, 3199 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [555 Valid, 2643 Invalid, 1 Unknown, 0 Unchecked, 11.1s Time] [2021-11-21 01:16:14,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7222 states. [2021-11-21 01:16:14,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7222 to 7161. [2021-11-21 01:16:14,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7161 states, 4203 states have (on average 1.264572924101832) internal successors, (5315), 4365 states have internal predecessors, (5315), 2430 states have call successors, (2430), 532 states have call predecessors, (2430), 525 states have return successors, (2431), 2388 states have call predecessors, (2431), 2426 states have call successors, (2431) [2021-11-21 01:16:14,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7161 states to 7161 states and 10176 transitions. [2021-11-21 01:16:14,401 INFO L78 Accepts]: Start accepts. Automaton has 7161 states and 10176 transitions. Word has length 129 [2021-11-21 01:16:14,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:14,402 INFO L470 AbstractCegarLoop]: Abstraction has 7161 states and 10176 transitions. [2021-11-21 01:16:14,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-21 01:16:14,402 INFO L276 IsEmpty]: Start isEmpty. Operand 7161 states and 10176 transitions. [2021-11-21 01:16:14,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-21 01:16:14,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:14,407 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 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 01:16:14,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:16:14,407 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:16:14,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:14,408 INFO L85 PathProgramCache]: Analyzing trace with hash -545374415, now seen corresponding path program 1 times [2021-11-21 01:16:14,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:16:14,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668243398] [2021-11-21 01:16:14,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:14,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:16:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:14,575 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2021-11-21 01:16:14,576 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:16:14,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668243398] [2021-11-21 01:16:14,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668243398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:14,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:14,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:16:14,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516973522] [2021-11-21 01:16:14,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:14,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:16:14,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:16:14,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:16:14,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:16:14,579 INFO L87 Difference]: Start difference. First operand 7161 states and 10176 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-21 01:16:18,324 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:20,866 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:20,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:20,908 INFO L93 Difference]: Finished difference Result 17918 states and 25333 transitions. [2021-11-21 01:16:20,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:16:20,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 131 [2021-11-21 01:16:20,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:20,996 INFO L225 Difference]: With dead ends: 17918 [2021-11-21 01:16:20,996 INFO L226 Difference]: Without dead ends: 10776 [2021-11-21 01:16:21,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:16:21,033 INFO L933 BasicCegarLoop]: 2112 mSDtfsCounter, 1368 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 3702 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:21,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1368 Valid, 3702 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 514 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2021-11-21 01:16:21,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10776 states. [2021-11-21 01:16:21,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10776 to 10733. [2021-11-21 01:16:21,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10733 states, 6254 states have (on average 1.2583946274384394) internal successors, (7870), 6499 states have internal predecessors, (7870), 3610 states have call successors, (3610), 881 states have call predecessors, (3610), 866 states have return successors, (3627), 3523 states have call predecessors, (3627), 3606 states have call successors, (3627) [2021-11-21 01:16:21,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10733 states to 10733 states and 15107 transitions. [2021-11-21 01:16:21,633 INFO L78 Accepts]: Start accepts. Automaton has 10733 states and 15107 transitions. Word has length 131 [2021-11-21 01:16:21,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:21,633 INFO L470 AbstractCegarLoop]: Abstraction has 10733 states and 15107 transitions. [2021-11-21 01:16:21,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-21 01:16:21,635 INFO L276 IsEmpty]: Start isEmpty. Operand 10733 states and 15107 transitions. [2021-11-21 01:16:21,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-21 01:16:21,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:21,638 INFO L514 BasicCegarLoop]: trace histogram [11, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:16:21,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:16:21,639 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:16:21,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:21,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1238756010, now seen corresponding path program 1 times [2021-11-21 01:16:21,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:16:21,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648826414] [2021-11-21 01:16:21,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:21,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:16:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:21,826 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2021-11-21 01:16:21,826 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:16:21,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648826414] [2021-11-21 01:16:21,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648826414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:21,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:21,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:16:21,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913656850] [2021-11-21 01:16:21,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:21,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:16:21,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:16:21,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:16:21,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:16:21,829 INFO L87 Difference]: Start difference. First operand 10733 states and 15107 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-21 01:16:25,499 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:28,379 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 01:16:28,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:28,438 INFO L93 Difference]: Finished difference Result 30245 states and 42616 transitions. [2021-11-21 01:16:28,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:16:28,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 133 [2021-11-21 01:16:28,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:28,554 INFO L225 Difference]: With dead ends: 30245 [2021-11-21 01:16:28,554 INFO L226 Difference]: Without dead ends: 19531 [2021-11-21 01:16:28,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:16:28,609 INFO L933 BasicCegarLoop]: 2120 mSDtfsCounter, 1651 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 3761 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:28,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1651 Valid, 3761 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 520 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-11-21 01:16:28,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19531 states. [2021-11-21 01:16:29,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19531 to 19470. [2021-11-21 01:16:29,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19470 states, 11333 states have (on average 1.2592429189093797) internal successors, (14271), 11802 states have internal predecessors, (14271), 6565 states have call successors, (6565), 1598 states have call predecessors, (6565), 1569 states have return successors, (6603), 6378 states have call predecessors, (6603), 6561 states have call successors, (6603) [2021-11-21 01:16:29,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19470 states to 19470 states and 27439 transitions. [2021-11-21 01:16:29,794 INFO L78 Accepts]: Start accepts. Automaton has 19470 states and 27439 transitions. Word has length 133 [2021-11-21 01:16:29,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:29,795 INFO L470 AbstractCegarLoop]: Abstraction has 19470 states and 27439 transitions. [2021-11-21 01:16:29,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-21 01:16:29,795 INFO L276 IsEmpty]: Start isEmpty. Operand 19470 states and 27439 transitions. [2021-11-21 01:16:29,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-21 01:16:29,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:29,798 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 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] [2021-11-21 01:16:29,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:16:29,799 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:16:29,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:29,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1117849443, now seen corresponding path program 1 times [2021-11-21 01:16:29,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:16:29,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107547285] [2021-11-21 01:16:29,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:29,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:16:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:29,947 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2021-11-21 01:16:29,947 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:16:29,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107547285] [2021-11-21 01:16:29,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107547285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:29,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:29,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:16:29,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108139512] [2021-11-21 01:16:29,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:29,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:16:29,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:16:29,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:16:29,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:16:29,950 INFO L87 Difference]: Start difference. First operand 19470 states and 27439 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-21 01:16:32,605 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:35,691 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:35,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:35,753 INFO L93 Difference]: Finished difference Result 50536 states and 70933 transitions. [2021-11-21 01:16:35,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:16:35,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 134 [2021-11-21 01:16:35,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:35,927 INFO L225 Difference]: With dead ends: 50536 [2021-11-21 01:16:35,927 INFO L226 Difference]: Without dead ends: 31085 [2021-11-21 01:16:35,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:16:36,000 INFO L933 BasicCegarLoop]: 2003 mSDtfsCounter, 1397 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:36,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1397 Valid, 3604 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 537 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-11-21 01:16:36,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31085 states. [2021-11-21 01:16:37,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31085 to 31044. [2021-11-21 01:16:37,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31044 states, 18056 states have (on average 1.2476185201595038) internal successors, (22527), 18817 states have internal predecessors, (22527), 10366 states have call successors, (10366), 2676 states have call predecessors, (10366), 2619 states have return successors, (10452), 9991 states have call predecessors, (10452), 10362 states have call successors, (10452) [2021-11-21 01:16:37,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31044 states to 31044 states and 43345 transitions. [2021-11-21 01:16:37,836 INFO L78 Accepts]: Start accepts. Automaton has 31044 states and 43345 transitions. Word has length 134 [2021-11-21 01:16:37,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:37,836 INFO L470 AbstractCegarLoop]: Abstraction has 31044 states and 43345 transitions. [2021-11-21 01:16:37,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-21 01:16:37,837 INFO L276 IsEmpty]: Start isEmpty. Operand 31044 states and 43345 transitions. [2021-11-21 01:16:37,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-21 01:16:37,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:37,840 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:16:37,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:16:37,840 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:16:37,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:37,841 INFO L85 PathProgramCache]: Analyzing trace with hash -816720849, now seen corresponding path program 1 times [2021-11-21 01:16:37,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:16:37,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369729314] [2021-11-21 01:16:37,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:37,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:16:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:38,075 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-21 01:16:38,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:16:38,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369729314] [2021-11-21 01:16:38,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369729314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:38,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:38,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:16:38,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787785587] [2021-11-21 01:16:38,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:38,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:16:38,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:16:38,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:16:38,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:16:38,079 INFO L87 Difference]: Start difference. First operand 31044 states and 43345 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-21 01:16:41,624 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:45,530 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:47,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:47,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:47,820 INFO L93 Difference]: Finished difference Result 43245 states and 60085 transitions. [2021-11-21 01:16:47,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:16:47,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 153 [2021-11-21 01:16:47,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:48,059 INFO L225 Difference]: With dead ends: 43245 [2021-11-21 01:16:48,060 INFO L226 Difference]: Without dead ends: 43243 [2021-11-21 01:16:48,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:16:48,086 INFO L933 BasicCegarLoop]: 1997 mSDtfsCounter, 1385 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 7594 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:48,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1397 Valid, 7594 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2021-11-21 01:16:48,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43243 states. [2021-11-21 01:16:50,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43243 to 43226. [2021-11-21 01:16:50,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43226 states, 25102 states have (on average 1.2419329137120547) internal successors, (31175), 26167 states have internal predecessors, (31175), 14384 states have call successors, (14384), 3823 states have call predecessors, (14384), 3737 states have return successors, (14508), 13824 states have call predecessors, (14508), 14376 states have call successors, (14508) [2021-11-21 01:16:50,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43226 states to 43226 states and 60067 transitions. [2021-11-21 01:16:50,898 INFO L78 Accepts]: Start accepts. Automaton has 43226 states and 60067 transitions. Word has length 153 [2021-11-21 01:16:50,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:50,899 INFO L470 AbstractCegarLoop]: Abstraction has 43226 states and 60067 transitions. [2021-11-21 01:16:50,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-21 01:16:50,900 INFO L276 IsEmpty]: Start isEmpty. Operand 43226 states and 60067 transitions. [2021-11-21 01:16:50,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-21 01:16:50,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:50,904 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:16:50,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:16:50,905 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:16:50,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:50,906 INFO L85 PathProgramCache]: Analyzing trace with hash 458422132, now seen corresponding path program 1 times [2021-11-21 01:16:50,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:16:50,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338310057] [2021-11-21 01:16:50,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:50,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:16:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:51,389 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2021-11-21 01:16:51,390 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:16:51,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338310057] [2021-11-21 01:16:51,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338310057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:51,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:51,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:16:51,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504148321] [2021-11-21 01:16:51,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:51,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:16:51,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:16:51,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:16:51,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:16:51,392 INFO L87 Difference]: Start difference. First operand 43226 states and 60067 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 01:16:55,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:59,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:01,332 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:02,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:02,272 INFO L93 Difference]: Finished difference Result 43249 states and 60088 transitions. [2021-11-21 01:17:02,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:17:02,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 162 [2021-11-21 01:17:02,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:02,577 INFO L225 Difference]: With dead ends: 43249 [2021-11-21 01:17:02,577 INFO L226 Difference]: Without dead ends: 43247 [2021-11-21 01:17:02,597 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 01:17:02,598 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 1379 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:02,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1390 Valid, 7597 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2021-11-21 01:17:02,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43247 states. [2021-11-21 01:17:04,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43247 to 43230. [2021-11-21 01:17:04,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43230 states, 25105 states have (on average 1.2419040031866162) internal successors, (31178), 26170 states have internal predecessors, (31178), 14384 states have call successors, (14384), 3824 states have call predecessors, (14384), 3738 states have return successors, (14508), 13824 states have call predecessors, (14508), 14376 states have call successors, (14508) [2021-11-21 01:17:04,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43230 states to 43230 states and 60070 transitions. [2021-11-21 01:17:04,827 INFO L78 Accepts]: Start accepts. Automaton has 43230 states and 60070 transitions. Word has length 162 [2021-11-21 01:17:04,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:04,830 INFO L470 AbstractCegarLoop]: Abstraction has 43230 states and 60070 transitions. [2021-11-21 01:17:04,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 01:17:04,830 INFO L276 IsEmpty]: Start isEmpty. Operand 43230 states and 60070 transitions. [2021-11-21 01:17:04,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-21 01:17:04,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:04,834 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 3, 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] [2021-11-21 01:17:04,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:17:04,835 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:17:04,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:04,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1105127875, now seen corresponding path program 1 times [2021-11-21 01:17:04,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:17:04,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847362265] [2021-11-21 01:17:04,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:04,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:17:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:05,077 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2021-11-21 01:17:05,078 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:17:05,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847362265] [2021-11-21 01:17:05,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847362265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:05,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:05,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:17:05,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946318605] [2021-11-21 01:17:05,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:05,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:17:05,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:17:05,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:17:05,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:17:05,080 INFO L87 Difference]: Start difference. First operand 43230 states and 60070 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, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-21 01:17:09,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:13,503 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:13,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:13,967 INFO L93 Difference]: Finished difference Result 55421 states and 76797 transitions. [2021-11-21 01:17:13,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:17:13,968 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, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 166 [2021-11-21 01:17:13,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:14,220 INFO L225 Difference]: With dead ends: 55421 [2021-11-21 01:17:14,220 INFO L226 Difference]: Without dead ends: 55419 [2021-11-21 01:17:14,249 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 01:17:14,253 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 1378 mSDsluCounter, 6355 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:14,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1388 Valid, 7597 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1033 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2021-11-21 01:17:14,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55419 states. [2021-11-21 01:17:16,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55419 to 55390. [2021-11-21 01:17:16,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55390 states, 32135 states have (on average 1.2388050412323013) internal successors, (39809), 33516 states have internal predecessors, (39809), 18398 states have call successors, (18398), 4969 states have call predecessors, (18398), 4854 states have return successors, (18560), 17641 states have call predecessors, (18560), 18386 states have call successors, (18560) [2021-11-21 01:17:17,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55390 states to 55390 states and 76767 transitions. [2021-11-21 01:17:17,349 INFO L78 Accepts]: Start accepts. Automaton has 55390 states and 76767 transitions. Word has length 166 [2021-11-21 01:17:17,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:17,350 INFO L470 AbstractCegarLoop]: Abstraction has 55390 states and 76767 transitions. [2021-11-21 01:17:17,350 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, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-21 01:17:17,351 INFO L276 IsEmpty]: Start isEmpty. Operand 55390 states and 76767 transitions. [2021-11-21 01:17:17,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-21 01:17:17,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:17,355 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2021-11-21 01:17:17,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:17:17,356 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:17:17,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:17,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1795277550, now seen corresponding path program 1 times [2021-11-21 01:17:17,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:17:17,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924256499] [2021-11-21 01:17:17,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:17,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:17:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:17,635 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2021-11-21 01:17:17,636 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:17:17,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924256499] [2021-11-21 01:17:17,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924256499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:17,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:17,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:17:17,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438954004] [2021-11-21 01:17:17,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:17,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:17:17,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:17:17,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:17:17,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:17:17,638 INFO L87 Difference]: Start difference. First operand 55390 states and 76767 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 01:17:21,255 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:26,443 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:27,729 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:29,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:29,442 INFO L93 Difference]: Finished difference Result 55417 states and 76792 transitions. [2021-11-21 01:17:29,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:17:29,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 168 [2021-11-21 01:17:29,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:29,644 INFO L225 Difference]: With dead ends: 55417 [2021-11-21 01:17:29,644 INFO L226 Difference]: Without dead ends: 55415 [2021-11-21 01:17:29,664 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 01:17:29,664 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 1380 mSDsluCounter, 6359 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:29,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1389 Valid, 7597 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2021-11-21 01:17:29,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55415 states. [2021-11-21 01:17:31,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55415 to 55398. [2021-11-21 01:17:31,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55398 states, 32141 states have (on average 1.2387604617155659) internal successors, (39815), 33522 states have internal predecessors, (39815), 18398 states have call successors, (18398), 4971 states have call predecessors, (18398), 4856 states have return successors, (18560), 17641 states have call predecessors, (18560), 18386 states have call successors, (18560) [2021-11-21 01:17:32,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55398 states to 55398 states and 76773 transitions. [2021-11-21 01:17:32,023 INFO L78 Accepts]: Start accepts. Automaton has 55398 states and 76773 transitions. Word has length 168 [2021-11-21 01:17:32,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:32,024 INFO L470 AbstractCegarLoop]: Abstraction has 55398 states and 76773 transitions. [2021-11-21 01:17:32,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 01:17:32,025 INFO L276 IsEmpty]: Start isEmpty. Operand 55398 states and 76773 transitions. [2021-11-21 01:17:32,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-21 01:17:32,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:32,038 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:17:32,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:17:32,039 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:17:32,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:32,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1020113719, now seen corresponding path program 1 times [2021-11-21 01:17:32,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:17:32,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9111557] [2021-11-21 01:17:32,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:32,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:17:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2021-11-21 01:17:32,224 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:17:32,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9111557] [2021-11-21 01:17:32,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9111557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:32,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:32,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:17:32,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455878654] [2021-11-21 01:17:32,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:32,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:17:32,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:17:32,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:17:32,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:17:32,226 INFO L87 Difference]: Start difference. First operand 55398 states and 76773 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-21 01:17:35,582 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:40,156 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:40,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:40,794 INFO L93 Difference]: Finished difference Result 55425 states and 76798 transitions. [2021-11-21 01:17:40,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:17:40,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 177 [2021-11-21 01:17:40,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:41,060 INFO L225 Difference]: With dead ends: 55425 [2021-11-21 01:17:41,061 INFO L226 Difference]: Without dead ends: 55423 [2021-11-21 01:17:41,076 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 01:17:41,076 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 1379 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:41,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1387 Valid, 7597 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1036 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2021-11-21 01:17:41,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55423 states. [2021-11-21 01:17:42,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55423 to 55406. [2021-11-21 01:17:43,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55406 states, 32147 states have (on average 1.2387158988397051) internal successors, (39821), 33528 states have internal predecessors, (39821), 18398 states have call successors, (18398), 4973 states have call predecessors, (18398), 4858 states have return successors, (18560), 17641 states have call predecessors, (18560), 18386 states have call successors, (18560) [2021-11-21 01:17:43,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55406 states to 55406 states and 76779 transitions. [2021-11-21 01:17:43,263 INFO L78 Accepts]: Start accepts. Automaton has 55406 states and 76779 transitions. Word has length 177 [2021-11-21 01:17:43,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:43,264 INFO L470 AbstractCegarLoop]: Abstraction has 55406 states and 76779 transitions. [2021-11-21 01:17:43,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-21 01:17:43,264 INFO L276 IsEmpty]: Start isEmpty. Operand 55406 states and 76779 transitions. [2021-11-21 01:17:43,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-21 01:17:43,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:43,268 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2021-11-21 01:17:43,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 01:17:43,269 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:17:43,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:43,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1572000346, now seen corresponding path program 1 times [2021-11-21 01:17:43,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:17:43,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904814650] [2021-11-21 01:17:43,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:43,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:17:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:43,465 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2021-11-21 01:17:43,465 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:17:43,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904814650] [2021-11-21 01:17:43,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904814650] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:43,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:43,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:17:43,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389471403] [2021-11-21 01:17:43,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:43,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:17:43,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:17:43,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:17:43,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:17:43,467 INFO L87 Difference]: Start difference. First operand 55406 states and 76779 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-21 01:17:47,038 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:51,622 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:53,636 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:54,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:54,618 INFO L93 Difference]: Finished difference Result 55433 states and 76804 transitions. [2021-11-21 01:17:54,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:17:54,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 181 [2021-11-21 01:17:54,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:54,921 INFO L225 Difference]: With dead ends: 55433 [2021-11-21 01:17:54,921 INFO L226 Difference]: Without dead ends: 55431 [2021-11-21 01:17:54,938 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 01:17:54,938 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 1379 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:54,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1386 Valid, 7597 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1036 Invalid, 2 Unknown, 0 Unchecked, 9.7s Time] [2021-11-21 01:17:54,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55431 states. [2021-11-21 01:17:56,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55431 to 55414. [2021-11-21 01:17:56,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55414 states, 32153 states have (on average 1.2386713525954032) internal successors, (39827), 33534 states have internal predecessors, (39827), 18398 states have call successors, (18398), 4975 states have call predecessors, (18398), 4860 states have return successors, (18560), 17641 states have call predecessors, (18560), 18386 states have call successors, (18560) [2021-11-21 01:17:57,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55414 states to 55414 states and 76785 transitions. [2021-11-21 01:17:57,223 INFO L78 Accepts]: Start accepts. Automaton has 55414 states and 76785 transitions. Word has length 181 [2021-11-21 01:17:57,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:57,224 INFO L470 AbstractCegarLoop]: Abstraction has 55414 states and 76785 transitions. [2021-11-21 01:17:57,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-21 01:17:57,224 INFO L276 IsEmpty]: Start isEmpty. Operand 55414 states and 76785 transitions. [2021-11-21 01:17:57,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-21 01:17:57,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:57,231 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 7, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:17:57,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 01:17:57,232 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:17:57,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:57,232 INFO L85 PathProgramCache]: Analyzing trace with hash 483161603, now seen corresponding path program 1 times [2021-11-21 01:17:57,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:17:57,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076953031] [2021-11-21 01:17:57,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:57,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:17:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:57,446 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2021-11-21 01:17:57,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:17:57,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076953031] [2021-11-21 01:17:57,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076953031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:57,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:57,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:17:57,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189502043] [2021-11-21 01:17:57,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:57,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:17:57,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:17:57,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:17:57,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:17:57,450 INFO L87 Difference]: Start difference. First operand 55414 states and 76785 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, (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 01:18:00,932 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:05,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:18:05,107 INFO L93 Difference]: Finished difference Result 55441 states and 76810 transitions. [2021-11-21 01:18:05,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:18:05,107 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, (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 186 [2021-11-21 01:18:05,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:18:05,309 INFO L225 Difference]: With dead ends: 55441 [2021-11-21 01:18:05,309 INFO L226 Difference]: Without dead ends: 55439 [2021-11-21 01:18:05,330 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 01:18:05,330 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 1379 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:18:05,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1385 Valid, 7597 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-11-21 01:18:05,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55439 states. [2021-11-21 01:18:07,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55439 to 55422. [2021-11-21 01:18:07,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55422 states, 32159 states have (on average 1.2386268229733512) internal successors, (39833), 33540 states have internal predecessors, (39833), 18398 states have call successors, (18398), 4977 states have call predecessors, (18398), 4862 states have return successors, (18560), 17641 states have call predecessors, (18560), 18386 states have call successors, (18560) [2021-11-21 01:18:07,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55422 states to 55422 states and 76791 transitions. [2021-11-21 01:18:07,696 INFO L78 Accepts]: Start accepts. Automaton has 55422 states and 76791 transitions. Word has length 186 [2021-11-21 01:18:07,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:18:07,696 INFO L470 AbstractCegarLoop]: Abstraction has 55422 states and 76791 transitions. [2021-11-21 01:18:07,697 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, (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 01:18:07,697 INFO L276 IsEmpty]: Start isEmpty. Operand 55422 states and 76791 transitions. [2021-11-21 01:18:07,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-21 01:18:07,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:18:07,702 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2021-11-21 01:18:07,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 01:18:07,703 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:18:07,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:18:07,703 INFO L85 PathProgramCache]: Analyzing trace with hash 734055354, now seen corresponding path program 1 times [2021-11-21 01:18:07,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:18:07,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190588896] [2021-11-21 01:18:07,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:07,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:18:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:07,888 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2021-11-21 01:18:07,889 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:18:07,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190588896] [2021-11-21 01:18:07,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190588896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:18:07,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:18:07,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:18:07,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868322342] [2021-11-21 01:18:07,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:18:07,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:18:07,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:18:07,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:18:07,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:18:07,892 INFO L87 Difference]: Start difference. First operand 55422 states and 76791 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-21 01:18:11,468 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:14,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:16,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:18,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:18:18,134 INFO L93 Difference]: Finished difference Result 55449 states and 76816 transitions. [2021-11-21 01:18:18,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:18:18,136 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 191 [2021-11-21 01:18:18,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:18:18,333 INFO L225 Difference]: With dead ends: 55449 [2021-11-21 01:18:18,333 INFO L226 Difference]: Without dead ends: 55447 [2021-11-21 01:18:18,351 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 01:18:18,352 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 1379 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:18:18,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1384 Valid, 7597 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2021-11-21 01:18:18,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55447 states. [2021-11-21 01:18:20,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55447 to 55430. [2021-11-21 01:18:20,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55430 states, 32165 states have (on average 1.2385823099642468) internal successors, (39839), 33546 states have internal predecessors, (39839), 18398 states have call successors, (18398), 4979 states have call predecessors, (18398), 4864 states have return successors, (18560), 17641 states have call predecessors, (18560), 18386 states have call successors, (18560) [2021-11-21 01:18:21,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55430 states to 55430 states and 76797 transitions. [2021-11-21 01:18:21,132 INFO L78 Accepts]: Start accepts. Automaton has 55430 states and 76797 transitions. Word has length 191 [2021-11-21 01:18:21,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:18:21,133 INFO L470 AbstractCegarLoop]: Abstraction has 55430 states and 76797 transitions. [2021-11-21 01:18:21,133 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-21 01:18:21,133 INFO L276 IsEmpty]: Start isEmpty. Operand 55430 states and 76797 transitions. [2021-11-21 01:18:21,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-21 01:18:21,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:18:21,143 INFO L514 BasicCegarLoop]: trace histogram [15, 9, 9, 9, 9, 9, 9, 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] [2021-11-21 01:18:21,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-21 01:18:21,144 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:18:21,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:18:21,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1218104905, now seen corresponding path program 1 times [2021-11-21 01:18:21,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:18:21,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822732691] [2021-11-21 01:18:21,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:21,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:18:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:21,454 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-11-21 01:18:21,455 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:18:21,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822732691] [2021-11-21 01:18:21,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822732691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:18:21,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:18:21,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:18:21,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794626405] [2021-11-21 01:18:21,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:18:21,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:18:21,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:18:21,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:18:21,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:18:21,457 INFO L87 Difference]: Start difference. First operand 55430 states and 76797 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 01:18:25,195 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:29,596 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:31,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:18:31,349 INFO L93 Difference]: Finished difference Result 86331 states and 119347 transitions. [2021-11-21 01:18:31,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:18:31,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 190 [2021-11-21 01:18:31,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:18:31,674 INFO L225 Difference]: With dead ends: 86331 [2021-11-21 01:18:31,674 INFO L226 Difference]: Without dead ends: 86329 [2021-11-21 01:18:31,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 01:18:31,714 INFO L933 BasicCegarLoop]: 2206 mSDtfsCounter, 1586 mSDsluCounter, 6898 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 8219 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:18:31,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1588 Valid, 8219 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1215 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2021-11-21 01:18:31,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86329 states. [2021-11-21 01:18:35,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86329 to 86256. [2021-11-21 01:18:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86256 states, 50112 states have (on average 1.2391044061302683) internal successors, (62094), 52289 states have internal predecessors, (62094), 28422 states have call successors, (28422), 7926 states have call predecessors, (28422), 7719 states have return successors, (28674), 27209 states have call predecessors, (28674), 28410 states have call successors, (28674)