./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-wireless-adm8211.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba --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 265e49c3377c52c97dc3fc0a083b7daee63958176975b73f1e1d54651892cb04 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 00:23:07,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:23:07,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:23:07,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:23:07,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:23:07,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:23:07,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:23:07,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:23:07,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:23:07,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:23:07,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:23:07,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:23:07,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:23:07,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:23:07,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:23:07,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:23:07,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:23:07,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:23:07,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:23:07,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:23:07,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:23:07,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:23:07,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:23:07,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:23:07,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:23:07,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:23:07,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:23:07,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:23:07,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:23:07,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:23:07,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:23:07,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:23:07,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:23:07,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:23:07,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:23:07,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:23:07,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:23:07,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:23:07,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:23:07,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:23:07,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:23:07,419 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 00:23:07,446 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:23:07,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:23:07,446 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:23:07,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:23:07,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:23:07,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:23:07,447 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:23:07,448 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:23:07,448 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:23:07,448 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:23:07,448 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:23:07,448 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:23:07,449 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:23:07,449 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:23:07,449 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:23:07,449 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:23:07,450 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:23:07,450 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:23:07,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:23:07,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:23:07,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:23:07,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:23:07,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:23:07,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:23:07,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:23:07,452 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:23:07,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:23:07,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:23:07,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:23:07,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:23:07,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:23:07,453 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:23:07,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:23:07,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:23:07,454 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:23:07,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:23:07,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:23:07,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:23:07,454 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 265e49c3377c52c97dc3fc0a083b7daee63958176975b73f1e1d54651892cb04 [2022-11-22 00:23:07,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:23:07,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:23:07,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:23:07,752 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:23:07,752 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:23:07,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i [2022-11-22 00:23:10,832 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:23:11,552 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:23:11,552 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i [2022-11-22 00:23:11,624 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/data/3ec5a741c/5b03e9ead8274d74bd9892b0c01fcd6d/FLAG10d27350b [2022-11-22 00:23:11,643 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/data/3ec5a741c/5b03e9ead8274d74bd9892b0c01fcd6d [2022-11-22 00:23:11,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:23:11,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:23:11,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:23:11,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:23:11,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:23:11,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:23:11" (1/1) ... [2022-11-22 00:23:11,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e948981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:23:11, skipping insertion in model container [2022-11-22 00:23:11,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:23:11" (1/1) ... [2022-11-22 00:23:11,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:23:11,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:23:14,690 WARN L237 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_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[372884,372897] [2022-11-22 00:23:14,694 WARN L237 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_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373053,373066] [2022-11-22 00:23:14,695 WARN L237 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_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373220,373233] [2022-11-22 00:23:14,696 WARN L237 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_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373388,373401] [2022-11-22 00:23:14,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:23:14,756 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:23:15,245 WARN L237 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_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[372884,372897] [2022-11-22 00:23:15,246 WARN L237 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_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373053,373066] [2022-11-22 00:23:15,246 WARN L237 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_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373220,373233] [2022-11-22 00:23:15,247 WARN L237 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_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373388,373401] [2022-11-22 00:23:15,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:23:15,410 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:23:15,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:23:15 WrapperNode [2022-11-22 00:23:15,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:23:15,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:23:15,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:23:15,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:23:15,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:23:15" (1/1) ... [2022-11-22 00:23:15,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:23:15" (1/1) ... [2022-11-22 00:23:15,782 INFO L138 Inliner]: procedures = 411, calls = 2809, calls flagged for inlining = 214, calls inlined = 198, statements flattened = 6107 [2022-11-22 00:23:15,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:23:15,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:23:15,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:23:15,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:23:15,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:23:15" (1/1) ... [2022-11-22 00:23:15,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:23:15" (1/1) ... [2022-11-22 00:23:15,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:23:15" (1/1) ... [2022-11-22 00:23:15,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:23:15" (1/1) ... [2022-11-22 00:23:15,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:23:15" (1/1) ... [2022-11-22 00:23:16,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:23:15" (1/1) ... [2022-11-22 00:23:16,046 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:23:15" (1/1) ... [2022-11-22 00:23:16,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:23:15" (1/1) ... [2022-11-22 00:23:16,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:23:16,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:23:16,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:23:16,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:23:16,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:23:15" (1/1) ... [2022-11-22 00:23:16,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:23:16,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:23:16,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:23:16,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:23:16,185 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_set_bssid [2022-11-22 00:23:16,186 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_set_bssid [2022-11-22 00:23:16,186 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_start [2022-11-22 00:23:16,186 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_start [2022-11-22 00:23:16,186 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-22 00:23:16,186 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-22 00:23:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 00:23:16,187 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 00:23:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 00:23:16,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 00:23:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 00:23:16,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 00:23:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 00:23:16,188 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 00:23:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-22 00:23:16,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-22 00:23:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-22 00:23:16,188 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-22 00:23:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_write_syn_al2210l [2022-11-22 00:23:16,189 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_write_syn_al2210l [2022-11-22 00:23:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 00:23:16,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 00:23:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-22 00:23:16,191 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-22 00:23:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 00:23:16,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 00:23:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_adm8211_priv [2022-11-22 00:23:16,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_adm8211_priv [2022-11-22 00:23:16,192 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-22 00:23:16,193 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-22 00:23:16,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:23:16,193 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-22 00:23:16,193 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-22 00:23:16,193 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_set_channel [2022-11-22 00:23:16,194 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_set_channel [2022-11-22 00:23:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 00:23:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 00:23:16,194 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 00:23:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 00:23:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 00:23:16,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 00:23:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_write_sram [2022-11-22 00:23:16,195 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_write_sram [2022-11-22 00:23:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:23:16,196 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 00:23:16,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 00:23:16,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 00:23:16,196 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 00:23:16,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 00:23:16,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 00:23:16,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 00:23:16,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 00:23:16,197 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2022-11-22 00:23:16,197 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2022-11-22 00:23:16,198 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 00:23:16,198 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 00:23:16,198 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 00:23:16,198 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 00:23:16,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 00:23:16,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 00:23:16,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:23:16,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 00:23:16,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 00:23:16,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 00:23:16,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 00:23:16,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:23:16,200 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2022-11-22 00:23:16,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2022-11-22 00:23:16,200 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_write_syn_max2820 [2022-11-22 00:23:16,201 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_write_syn_max2820 [2022-11-22 00:23:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 00:23:16,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 00:23:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_write_bbp [2022-11-22 00:23:16,298 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_write_bbp [2022-11-22 00:23:16,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 00:23:16,298 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 00:23:16,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 00:23:16,298 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 00:23:16,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 00:23:16,298 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-22 00:23:16,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-22 00:23:16,298 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 00:23:16,299 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 00:23:16,299 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-22 00:23:16,299 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-22 00:23:16,299 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_stop [2022-11-22 00:23:16,299 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_stop [2022-11-22 00:23:16,299 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-22 00:23:16,299 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-22 00:23:16,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:23:16,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:23:16,299 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-22 00:23:16,299 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-22 00:23:16,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 00:23:16,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 00:23:16,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 00:23:16,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 00:23:16,300 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-11-22 00:23:16,300 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-11-22 00:23:16,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 00:23:16,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 00:23:16,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ieee80211_free_hw [2022-11-22 00:23:16,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ieee80211_free_hw [2022-11-22 00:23:16,300 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-22 00:23:16,301 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-22 00:23:16,301 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-22 00:23:16,301 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-22 00:23:16,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 00:23:16,301 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 00:23:16,301 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 00:23:16,301 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 00:23:16,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:23:16,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 00:23:16,301 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_resume [2022-11-22 00:23:16,301 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_resume [2022-11-22 00:23:16,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 00:23:16,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 00:23:16,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 00:23:16,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_adm8211_priv [2022-11-22 00:23:16,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_adm8211_priv [2022-11-22 00:23:16,302 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_remove [2022-11-22 00:23:16,302 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_remove [2022-11-22 00:23:16,302 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_update_mode [2022-11-22 00:23:16,302 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_update_mode [2022-11-22 00:23:16,302 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 00:23:16,302 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 00:23:16,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:23:16,303 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-11-22 00:23:16,303 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-11-22 00:23:16,303 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-22 00:23:16,303 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-22 00:23:16,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 00:23:16,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 00:23:16,303 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_write_syn_rfmd2958 [2022-11-22 00:23:16,303 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_write_syn_rfmd2958 [2022-11-22 00:23:16,303 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_write_syn_rfmd2948 [2022-11-22 00:23:16,303 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_write_syn_rfmd2948 [2022-11-22 00:23:16,303 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-22 00:23:16,304 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-22 00:23:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 00:23:16,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 00:23:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-22 00:23:16,304 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-22 00:23:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-22 00:23:16,304 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-22 00:23:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:23:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 00:23:16,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 00:23:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2022-11-22 00:23:16,305 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2022-11-22 00:23:17,363 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:23:17,366 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:23:18,839 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 00:23:27,174 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 00:23:27,318 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:23:29,431 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:23:29,432 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 00:23:29,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:23:29 BoogieIcfgContainer [2022-11-22 00:23:29,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:23:29,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:23:29,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:23:29,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:23:29,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:23:11" (1/3) ... [2022-11-22 00:23:29,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9568bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:23:29, skipping insertion in model container [2022-11-22 00:23:29,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:23:15" (2/3) ... [2022-11-22 00:23:29,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9568bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:23:29, skipping insertion in model container [2022-11-22 00:23:29,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:23:29" (3/3) ... [2022-11-22 00:23:29,449 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i [2022-11-22 00:23:29,470 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:23:29,470 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 00:23:29,577 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:23:29,584 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3adcadf1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:23:29,585 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 00:23:29,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 1579 states, 904 states have (on average 1.2444690265486726) internal successors, (1125), 926 states have internal predecessors, (1125), 606 states have call successors, (606), 67 states have call predecessors, (606), 66 states have return successors, (601), 595 states have call predecessors, (601), 601 states have call successors, (601) [2022-11-22 00:23:29,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-22 00:23:29,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:23:29,615 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:23:29,615 INFO L420 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)] === [2022-11-22 00:23:29,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:23:29,621 INFO L85 PathProgramCache]: Analyzing trace with hash 523608734, now seen corresponding path program 1 times [2022-11-22 00:23:29,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:23:29,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182521473] [2022-11-22 00:23:29,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:23:29,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:23:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:23:30,509 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-11-22 00:23:30,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:23:30,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182521473] [2022-11-22 00:23:30,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182521473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:23:30,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:23:30,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:23:30,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837266464] [2022-11-22 00:23:30,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:23:30,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:23:30,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:23:30,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:23:30,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:23:30,566 INFO L87 Difference]: Start difference. First operand has 1579 states, 904 states have (on average 1.2444690265486726) internal successors, (1125), 926 states have internal predecessors, (1125), 606 states have call successors, (606), 67 states have call predecessors, (606), 66 states have return successors, (601), 595 states have call predecessors, (601), 601 states have call successors, (601) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2022-11-22 00:23:32,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:34,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:36,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:40,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:23:44,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:44,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:23:44,995 INFO L93 Difference]: Finished difference Result 4518 states and 6700 transitions. [2022-11-22 00:23:44,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:23:44,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 117 [2022-11-22 00:23:44,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:23:45,033 INFO L225 Difference]: With dead ends: 4518 [2022-11-22 00:23:45,033 INFO L226 Difference]: Without dead ends: 2950 [2022-11-22 00:23:45,050 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:23:45,053 INFO L413 NwaCegarLoop]: 2747 mSDtfsCounter, 2051 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 5 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 4797 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:23:45,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2053 Valid, 4797 Invalid, 540 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 531 Invalid, 4 Unknown, 0 Unchecked, 14.0s Time] [2022-11-22 00:23:45,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2022-11-22 00:23:45,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2944. [2022-11-22 00:23:45,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2944 states, 1701 states have (on average 1.2404467960023515) internal successors, (2110), 1740 states have internal predecessors, (2110), 1113 states have call successors, (1113), 128 states have call predecessors, (1113), 127 states have return successors, (1110), 1099 states have call predecessors, (1110), 1110 states have call successors, (1110) [2022-11-22 00:23:45,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2944 states to 2944 states and 4333 transitions. [2022-11-22 00:23:45,454 INFO L78 Accepts]: Start accepts. Automaton has 2944 states and 4333 transitions. Word has length 117 [2022-11-22 00:23:45,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:23:45,455 INFO L495 AbstractCegarLoop]: Abstraction has 2944 states and 4333 transitions. [2022-11-22 00:23:45,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2022-11-22 00:23:45,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2944 states and 4333 transitions. [2022-11-22 00:23:45,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-22 00:23:45,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:23:45,469 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:23:45,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:23:45,470 INFO L420 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)] === [2022-11-22 00:23:45,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:23:45,471 INFO L85 PathProgramCache]: Analyzing trace with hash -476893097, now seen corresponding path program 1 times [2022-11-22 00:23:45,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:23:45,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378622473] [2022-11-22 00:23:45,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:23:45,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:23:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:23:46,082 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-11-22 00:23:46,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:23:46,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378622473] [2022-11-22 00:23:46,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378622473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:23:46,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:23:46,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:23:46,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921449922] [2022-11-22 00:23:46,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:23:46,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:23:46,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:23:46,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:23:46,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:23:46,087 INFO L87 Difference]: Start difference. First operand 2944 states and 4333 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-22 00:23:48,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:51,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:23:53,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:23:55,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:57,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:58,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:23:58,724 INFO L93 Difference]: Finished difference Result 8198 states and 12065 transitions. [2022-11-22 00:23:58,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:23:58,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 128 [2022-11-22 00:23:58,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:23:58,775 INFO L225 Difference]: With dead ends: 8198 [2022-11-22 00:23:58,775 INFO L226 Difference]: Without dead ends: 5275 [2022-11-22 00:23:58,798 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:23:58,799 INFO L413 NwaCegarLoop]: 2647 mSDtfsCounter, 1760 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 6 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 4679 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:23:58,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1762 Valid, 4679 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 502 Invalid, 4 Unknown, 0 Unchecked, 12.2s Time] [2022-11-22 00:23:58,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5275 states. [2022-11-22 00:23:59,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5275 to 5246. [2022-11-22 00:23:59,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5246 states, 3012 states have (on average 1.2347277556440903) internal successors, (3719), 3089 states have internal predecessors, (3719), 1996 states have call successors, (1996), 238 states have call predecessors, (1996), 235 states have return successors, (2003), 1962 states have call predecessors, (2003), 1993 states have call successors, (2003) [2022-11-22 00:23:59,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5246 states to 5246 states and 7718 transitions. [2022-11-22 00:23:59,298 INFO L78 Accepts]: Start accepts. Automaton has 5246 states and 7718 transitions. Word has length 128 [2022-11-22 00:23:59,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:23:59,299 INFO L495 AbstractCegarLoop]: Abstraction has 5246 states and 7718 transitions. [2022-11-22 00:23:59,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-22 00:23:59,300 INFO L276 IsEmpty]: Start isEmpty. Operand 5246 states and 7718 transitions. [2022-11-22 00:23:59,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-22 00:23:59,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:23:59,313 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 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] [2022-11-22 00:23:59,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:23:59,314 INFO L420 AbstractCegarLoop]: === Iteration 3 === 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)] === [2022-11-22 00:23:59,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:23:59,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1144079478, now seen corresponding path program 1 times [2022-11-22 00:23:59,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:23:59,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127548018] [2022-11-22 00:23:59,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:23:59,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:23:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:24:00,044 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-11-22 00:24:00,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:24:00,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127548018] [2022-11-22 00:24:00,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127548018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:24:00,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:24:00,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:24:00,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360989020] [2022-11-22 00:24:00,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:24:00,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:24:00,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:24:00,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:24:00,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:24:00,047 INFO L87 Difference]: Start difference. First operand 5246 states and 7718 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-22 00:24:02,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:07,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:24:12,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:15,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:17,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:24:17,007 INFO L93 Difference]: Finished difference Result 7859 states and 11544 transitions. [2022-11-22 00:24:17,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:24:17,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2022-11-22 00:24:17,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:24:17,076 INFO L225 Difference]: With dead ends: 7859 [2022-11-22 00:24:17,077 INFO L226 Difference]: Without dead ends: 7857 [2022-11-22 00:24:17,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:24:17,088 INFO L413 NwaCegarLoop]: 2824 mSDtfsCounter, 2078 mSDsluCounter, 7666 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 10490 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:24:17,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2091 Valid, 10490 Invalid, 1160 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1154 Invalid, 4 Unknown, 0 Unchecked, 16.5s Time] [2022-11-22 00:24:17,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7857 states. [2022-11-22 00:24:17,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7857 to 7849. [2022-11-22 00:24:17,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7849 states, 4505 states have (on average 1.2350721420643729) internal successors, (5564), 4620 states have internal predecessors, (5564), 2982 states have call successors, (2982), 364 states have call predecessors, (2982), 359 states have return successors, (2991), 2929 states have call predecessors, (2991), 2976 states have call successors, (2991) [2022-11-22 00:24:17,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7849 states to 7849 states and 11537 transitions. [2022-11-22 00:24:17,736 INFO L78 Accepts]: Start accepts. Automaton has 7849 states and 11537 transitions. Word has length 155 [2022-11-22 00:24:17,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:24:17,737 INFO L495 AbstractCegarLoop]: Abstraction has 7849 states and 11537 transitions. [2022-11-22 00:24:17,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-22 00:24:17,738 INFO L276 IsEmpty]: Start isEmpty. Operand 7849 states and 11537 transitions. [2022-11-22 00:24:17,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-22 00:24:17,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:24:17,743 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 4, 4, 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] [2022-11-22 00:24:17,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:24:17,744 INFO L420 AbstractCegarLoop]: === Iteration 4 === 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)] === [2022-11-22 00:24:17,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:24:17,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1645427534, now seen corresponding path program 1 times [2022-11-22 00:24:17,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:24:17,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596515675] [2022-11-22 00:24:17,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:24:17,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:24:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:24:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-11-22 00:24:18,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:24:18,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596515675] [2022-11-22 00:24:18,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596515675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:24:18,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:24:18,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:24:18,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351798695] [2022-11-22 00:24:18,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:24:18,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:24:18,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:24:18,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:24:18,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:24:18,385 INFO L87 Difference]: Start difference. First operand 7849 states and 11537 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, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 00:24:20,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:25,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:24:27,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:24:30,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:35,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:36,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:24:36,054 INFO L93 Difference]: Finished difference Result 7863 states and 11547 transitions. [2022-11-22 00:24:36,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:24:36,054 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, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 160 [2022-11-22 00:24:36,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:24:36,126 INFO L225 Difference]: With dead ends: 7863 [2022-11-22 00:24:36,127 INFO L226 Difference]: Without dead ends: 7861 [2022-11-22 00:24:36,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:24:36,139 INFO L413 NwaCegarLoop]: 2827 mSDtfsCounter, 2073 mSDsluCounter, 7666 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2085 SdHoareTripleChecker+Valid, 10493 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:24:36,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2085 Valid, 10493 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1154 Invalid, 4 Unknown, 0 Unchecked, 17.2s Time] [2022-11-22 00:24:36,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7861 states. [2022-11-22 00:24:36,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7861 to 7853. [2022-11-22 00:24:36,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7853 states, 4508 states have (on average 1.2349157054125999) internal successors, (5567), 4623 states have internal predecessors, (5567), 2982 states have call successors, (2982), 365 states have call predecessors, (2982), 360 states have return successors, (2991), 2929 states have call predecessors, (2991), 2976 states have call successors, (2991) [2022-11-22 00:24:36,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11540 transitions. [2022-11-22 00:24:36,824 INFO L78 Accepts]: Start accepts. Automaton has 7853 states and 11540 transitions. Word has length 160 [2022-11-22 00:24:36,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:24:36,825 INFO L495 AbstractCegarLoop]: Abstraction has 7853 states and 11540 transitions. [2022-11-22 00:24:36,826 INFO L496 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, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 00:24:36,826 INFO L276 IsEmpty]: Start isEmpty. Operand 7853 states and 11540 transitions. [2022-11-22 00:24:36,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-22 00:24:36,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:24:36,834 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 4, 4, 3, 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] [2022-11-22 00:24:36,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:24:36,834 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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)] === [2022-11-22 00:24:36,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:24:36,835 INFO L85 PathProgramCache]: Analyzing trace with hash 207162826, now seen corresponding path program 1 times [2022-11-22 00:24:36,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:24:36,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364638536] [2022-11-22 00:24:36,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:24:36,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:24:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:24:37,372 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2022-11-22 00:24:37,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:24:37,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364638536] [2022-11-22 00:24:37,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364638536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:24:37,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:24:37,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:24:37,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612743514] [2022-11-22 00:24:37,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:24:37,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:24:37,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:24:37,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:24:37,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:24:37,376 INFO L87 Difference]: Start difference. First operand 7853 states and 11540 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, (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) [2022-11-22 00:24:39,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:42,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:45,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:24:49,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:51,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:55,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:56,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:24:56,238 INFO L93 Difference]: Finished difference Result 7867 states and 11550 transitions. [2022-11-22 00:24:56,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:24:56,239 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, (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 165 [2022-11-22 00:24:56,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:24:56,290 INFO L225 Difference]: With dead ends: 7867 [2022-11-22 00:24:56,290 INFO L226 Difference]: Without dead ends: 7865 [2022-11-22 00:24:56,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:24:56,298 INFO L413 NwaCegarLoop]: 2827 mSDtfsCounter, 2073 mSDsluCounter, 7666 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 10493 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:24:56,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2084 Valid, 10493 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1154 Invalid, 5 Unknown, 0 Unchecked, 18.4s Time] [2022-11-22 00:24:56,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7865 states. [2022-11-22 00:24:56,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7865 to 7857. [2022-11-22 00:24:56,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7857 states, 4511 states have (on average 1.2347594768344048) internal successors, (5570), 4626 states have internal predecessors, (5570), 2982 states have call successors, (2982), 366 states have call predecessors, (2982), 361 states have return successors, (2991), 2929 states have call predecessors, (2991), 2976 states have call successors, (2991) [2022-11-22 00:24:56,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7857 states to 7857 states and 11543 transitions. [2022-11-22 00:24:56,985 INFO L78 Accepts]: Start accepts. Automaton has 7857 states and 11543 transitions. Word has length 165 [2022-11-22 00:24:56,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:24:56,986 INFO L495 AbstractCegarLoop]: Abstraction has 7857 states and 11543 transitions. [2022-11-22 00:24:56,986 INFO L496 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, (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) [2022-11-22 00:24:56,988 INFO L276 IsEmpty]: Start isEmpty. Operand 7857 states and 11543 transitions. [2022-11-22 00:24:56,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-22 00:24:56,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:24:56,994 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:24:56,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:24:56,995 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:24:56,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:24:56,996 INFO L85 PathProgramCache]: Analyzing trace with hash 849117326, now seen corresponding path program 1 times [2022-11-22 00:24:56,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:24:56,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428602710] [2022-11-22 00:24:56,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:24:56,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:24:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:24:57,563 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2022-11-22 00:24:57,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:24:57,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428602710] [2022-11-22 00:24:57,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428602710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:24:57,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:24:57,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:24:57,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147736766] [2022-11-22 00:24:57,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:24:57,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:24:57,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:24:57,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:24:57,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:24:57,567 INFO L87 Difference]: Start difference. First operand 7857 states and 11543 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, (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) [2022-11-22 00:24:59,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:04,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:25:06,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:25:08,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:11,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:15,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:15,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:25:15,857 INFO L93 Difference]: Finished difference Result 7871 states and 11553 transitions. [2022-11-22 00:25:15,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:25:15,858 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, (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 170 [2022-11-22 00:25:15,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:25:15,907 INFO L225 Difference]: With dead ends: 7871 [2022-11-22 00:25:15,907 INFO L226 Difference]: Without dead ends: 7869 [2022-11-22 00:25:15,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:25:15,915 INFO L413 NwaCegarLoop]: 2827 mSDtfsCounter, 2073 mSDsluCounter, 7666 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2083 SdHoareTripleChecker+Valid, 10493 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:25:15,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2083 Valid, 10493 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1150 Invalid, 6 Unknown, 0 Unchecked, 17.8s Time] [2022-11-22 00:25:15,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7869 states. [2022-11-22 00:25:16,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7869 to 7861. [2022-11-22 00:25:16,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7861 states, 4514 states have (on average 1.2346034559149313) internal successors, (5573), 4629 states have internal predecessors, (5573), 2982 states have call successors, (2982), 367 states have call predecessors, (2982), 362 states have return successors, (2991), 2929 states have call predecessors, (2991), 2976 states have call successors, (2991) [2022-11-22 00:25:16,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 11546 transitions. [2022-11-22 00:25:16,598 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 11546 transitions. Word has length 170 [2022-11-22 00:25:16,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:25:16,603 INFO L495 AbstractCegarLoop]: Abstraction has 7861 states and 11546 transitions. [2022-11-22 00:25:16,603 INFO L496 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, (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) [2022-11-22 00:25:16,603 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 11546 transitions. [2022-11-22 00:25:16,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-22 00:25:16,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:25:16,610 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 5, 4, 4, 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] [2022-11-22 00:25:16,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:25:16,610 INFO L420 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)] === [2022-11-22 00:25:16,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:25:16,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1430470666, now seen corresponding path program 1 times [2022-11-22 00:25:16,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:25:16,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544872761] [2022-11-22 00:25:16,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:25:16,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:25:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:25:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2022-11-22 00:25:17,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:25:17,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544872761] [2022-11-22 00:25:17,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544872761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:25:17,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:25:17,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:25:17,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227735597] [2022-11-22 00:25:17,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:25:17,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:25:17,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:25:17,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:25:17,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:25:17,092 INFO L87 Difference]: Start difference. First operand 7861 states and 11546 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, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 00:25:19,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:23,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:25:24,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:25:29,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:31,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:33,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:25:33,485 INFO L93 Difference]: Finished difference Result 7875 states and 11556 transitions. [2022-11-22 00:25:33,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:25:33,485 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, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 175 [2022-11-22 00:25:33,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:25:33,534 INFO L225 Difference]: With dead ends: 7875 [2022-11-22 00:25:33,534 INFO L226 Difference]: Without dead ends: 7873 [2022-11-22 00:25:33,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:25:33,542 INFO L413 NwaCegarLoop]: 2827 mSDtfsCounter, 2073 mSDsluCounter, 7666 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2082 SdHoareTripleChecker+Valid, 10493 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:25:33,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2082 Valid, 10493 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1154 Invalid, 4 Unknown, 0 Unchecked, 16.0s Time] [2022-11-22 00:25:33,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7873 states. [2022-11-22 00:25:34,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7873 to 7865. [2022-11-22 00:25:34,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7865 states, 4517 states have (on average 1.2344476422404251) internal successors, (5576), 4632 states have internal predecessors, (5576), 2982 states have call successors, (2982), 368 states have call predecessors, (2982), 363 states have return successors, (2991), 2929 states have call predecessors, (2991), 2976 states have call successors, (2991) [2022-11-22 00:25:34,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7865 states to 7865 states and 11549 transitions. [2022-11-22 00:25:34,249 INFO L78 Accepts]: Start accepts. Automaton has 7865 states and 11549 transitions. Word has length 175 [2022-11-22 00:25:34,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:25:34,250 INFO L495 AbstractCegarLoop]: Abstraction has 7865 states and 11549 transitions. [2022-11-22 00:25:34,250 INFO L496 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, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 00:25:34,251 INFO L276 IsEmpty]: Start isEmpty. Operand 7865 states and 11549 transitions. [2022-11-22 00:25:34,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-22 00:25:34,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:25:34,258 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 6, 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] [2022-11-22 00:25:34,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:25:34,258 INFO L420 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)] === [2022-11-22 00:25:34,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:25:34,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1662269672, now seen corresponding path program 1 times [2022-11-22 00:25:34,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:25:34,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684147270] [2022-11-22 00:25:34,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:25:34,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:25:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:25:34,808 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2022-11-22 00:25:34,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:25:34,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684147270] [2022-11-22 00:25:34,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684147270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:25:34,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:25:34,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:25:34,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343087895] [2022-11-22 00:25:34,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:25:34,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:25:34,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:25:34,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:25:34,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:25:34,812 INFO L87 Difference]: Start difference. First operand 7865 states and 11549 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-22 00:25:37,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:39,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:42,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:25:44,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:25:47,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:52,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:25:52,075 INFO L93 Difference]: Finished difference Result 7879 states and 11559 transitions. [2022-11-22 00:25:52,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:25:52,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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 189 [2022-11-22 00:25:52,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:25:52,125 INFO L225 Difference]: With dead ends: 7879 [2022-11-22 00:25:52,126 INFO L226 Difference]: Without dead ends: 7877 [2022-11-22 00:25:52,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:25:52,135 INFO L413 NwaCegarLoop]: 2827 mSDtfsCounter, 2069 mSDsluCounter, 7666 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2077 SdHoareTripleChecker+Valid, 10493 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:25:52,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2077 Valid, 10493 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1155 Invalid, 3 Unknown, 0 Unchecked, 16.8s Time] [2022-11-22 00:25:52,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7877 states. [2022-11-22 00:25:52,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7877 to 7869. [2022-11-22 00:25:52,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7869 states, 4520 states have (on average 1.23429203539823) internal successors, (5579), 4635 states have internal predecessors, (5579), 2982 states have call successors, (2982), 369 states have call predecessors, (2982), 364 states have return successors, (2991), 2929 states have call predecessors, (2991), 2976 states have call successors, (2991) [2022-11-22 00:25:52,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7869 states to 7869 states and 11552 transitions. [2022-11-22 00:25:52,916 INFO L78 Accepts]: Start accepts. Automaton has 7869 states and 11552 transitions. Word has length 189 [2022-11-22 00:25:52,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:25:52,917 INFO L495 AbstractCegarLoop]: Abstraction has 7869 states and 11552 transitions. [2022-11-22 00:25:52,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-22 00:25:52,917 INFO L276 IsEmpty]: Start isEmpty. Operand 7869 states and 11552 transitions. [2022-11-22 00:25:52,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-22 00:25:52,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:25:52,926 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 7, 6, 6, 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] [2022-11-22 00:25:52,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:25:52,927 INFO L420 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)] === [2022-11-22 00:25:52,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:25:52,927 INFO L85 PathProgramCache]: Analyzing trace with hash 137712202, now seen corresponding path program 1 times [2022-11-22 00:25:52,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:25:52,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415920727] [2022-11-22 00:25:52,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:25:52,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:25:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:25:53,473 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-11-22 00:25:53,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:25:53,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415920727] [2022-11-22 00:25:53,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415920727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:25:53,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:25:53,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:25:53,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208273601] [2022-11-22 00:25:53,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:25:53,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:25:53,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:25:53,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:25:53,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:25:53,477 INFO L87 Difference]: Start difference. First operand 7869 states and 11552 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, (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) [2022-11-22 00:25:55,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:58,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:00,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:26:03,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:26:06,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:11,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:11,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:11,845 INFO L93 Difference]: Finished difference Result 10557 states and 15446 transitions. [2022-11-22 00:26:11,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:26:11,845 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, (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 185 [2022-11-22 00:26:11,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:11,905 INFO L225 Difference]: With dead ends: 10557 [2022-11-22 00:26:11,905 INFO L226 Difference]: Without dead ends: 10555 [2022-11-22 00:26:11,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:26:11,914 INFO L413 NwaCegarLoop]: 2723 mSDtfsCounter, 2038 mSDsluCounter, 7455 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 10178 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:11,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2045 Valid, 10178 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1033 Invalid, 5 Unknown, 0 Unchecked, 17.8s Time] [2022-11-22 00:26:11,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10555 states. [2022-11-22 00:26:12,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10555 to 10548. [2022-11-22 00:26:12,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10548 states, 6054 states have (on average 1.2337297654443342) internal successors, (7469), 6208 states have internal predecessors, (7469), 3979 states have call successors, (3979), 520 states have call predecessors, (3979), 512 states have return successors, (3990), 3905 states have call predecessors, (3990), 3970 states have call successors, (3990) [2022-11-22 00:26:12,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10548 states to 10548 states and 15438 transitions. [2022-11-22 00:26:12,808 INFO L78 Accepts]: Start accepts. Automaton has 10548 states and 15438 transitions. Word has length 185 [2022-11-22 00:26:12,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:12,808 INFO L495 AbstractCegarLoop]: Abstraction has 10548 states and 15438 transitions. [2022-11-22 00:26:12,809 INFO L496 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, (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) [2022-11-22 00:26:12,809 INFO L276 IsEmpty]: Start isEmpty. Operand 10548 states and 15438 transitions. [2022-11-22 00:26:12,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-22 00:26:12,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:12,819 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 8, 7, 7, 6, 6, 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] [2022-11-22 00:26:12,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 00:26:12,819 INFO L420 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)] === [2022-11-22 00:26:12,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:12,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1378109480, now seen corresponding path program 1 times [2022-11-22 00:26:12,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:12,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503113151] [2022-11-22 00:26:12,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:12,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2022-11-22 00:26:13,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:13,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503113151] [2022-11-22 00:26:13,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503113151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:13,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:13,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:26:13,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244183068] [2022-11-22 00:26:13,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:13,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:13,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:13,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:13,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:13,380 INFO L87 Difference]: Start difference. First operand 10548 states and 15438 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 00:26:15,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:20,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:26:24,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:26:26,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:29,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:30,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:30,907 INFO L93 Difference]: Finished difference Result 15645 states and 22839 transitions. [2022-11-22 00:26:30,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:26:30,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 199 [2022-11-22 00:26:30,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:30,995 INFO L225 Difference]: With dead ends: 15645 [2022-11-22 00:26:30,995 INFO L226 Difference]: Without dead ends: 15643 [2022-11-22 00:26:31,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:26:31,007 INFO L413 NwaCegarLoop]: 2807 mSDtfsCounter, 1951 mSDsluCounter, 7626 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 10433 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:31,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1957 Valid, 10433 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1151 Invalid, 4 Unknown, 0 Unchecked, 16.6s Time] [2022-11-22 00:26:31,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15643 states. [2022-11-22 00:26:32,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15643 to 15633. [2022-11-22 00:26:32,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15633 states, 8960 states have (on average 1.2310267857142858) internal successors, (11030), 9186 states have internal predecessors, (11030), 5891 states have call successors, (5891), 790 states have call predecessors, (5891), 779 states have return successors, (5909), 5782 states have call predecessors, (5909), 5879 states have call successors, (5909) [2022-11-22 00:26:32,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15633 states to 15633 states and 22830 transitions. [2022-11-22 00:26:32,247 INFO L78 Accepts]: Start accepts. Automaton has 15633 states and 22830 transitions. Word has length 199 [2022-11-22 00:26:32,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:32,248 INFO L495 AbstractCegarLoop]: Abstraction has 15633 states and 22830 transitions. [2022-11-22 00:26:32,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 00:26:32,248 INFO L276 IsEmpty]: Start isEmpty. Operand 15633 states and 22830 transitions. [2022-11-22 00:26:32,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-22 00:26:32,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:32,258 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 9, 8, 8, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:32,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 00:26:32,258 INFO L420 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)] === [2022-11-22 00:26:32,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:32,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1655268864, now seen corresponding path program 1 times [2022-11-22 00:26:32,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:32,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444449038] [2022-11-22 00:26:32,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:32,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2022-11-22 00:26:32,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:32,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444449038] [2022-11-22 00:26:32,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444449038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:32,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:32,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:26:32,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588495777] [2022-11-22 00:26:32,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:32,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:32,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:32,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:32,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:32,882 INFO L87 Difference]: Start difference. First operand 15633 states and 22830 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 00:26:35,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:37,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:40,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:26:45,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:48,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:52,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:53,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:53,686 INFO L93 Difference]: Finished difference Result 15651 states and 22844 transitions. [2022-11-22 00:26:53,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:26:53,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 204 [2022-11-22 00:26:53,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:53,877 INFO L225 Difference]: With dead ends: 15651 [2022-11-22 00:26:53,877 INFO L226 Difference]: Without dead ends: 15649 [2022-11-22 00:26:53,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:26:53,891 INFO L413 NwaCegarLoop]: 2827 mSDtfsCounter, 2069 mSDsluCounter, 7666 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2074 SdHoareTripleChecker+Valid, 10493 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:53,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2074 Valid, 10493 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1151 Invalid, 5 Unknown, 0 Unchecked, 19.6s Time] [2022-11-22 00:26:53,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15649 states. [2022-11-22 00:26:55,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15649 to 15641. [2022-11-22 00:26:55,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15641 states, 8966 states have (on average 1.2308721838054875) internal successors, (11036), 9192 states have internal predecessors, (11036), 5891 states have call successors, (5891), 792 states have call predecessors, (5891), 781 states have return successors, (5909), 5782 states have call predecessors, (5909), 5879 states have call successors, (5909) [2022-11-22 00:26:55,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15641 states to 15641 states and 22836 transitions. [2022-11-22 00:26:55,240 INFO L78 Accepts]: Start accepts. Automaton has 15641 states and 22836 transitions. Word has length 204 [2022-11-22 00:26:55,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:55,241 INFO L495 AbstractCegarLoop]: Abstraction has 15641 states and 22836 transitions. [2022-11-22 00:26:55,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 00:26:55,241 INFO L276 IsEmpty]: Start isEmpty. Operand 15641 states and 22836 transitions. [2022-11-22 00:26:55,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-22 00:26:55,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:55,252 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 10, 9, 9, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:55,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 00:26:55,252 INFO L420 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)] === [2022-11-22 00:26:55,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:55,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1495199666, now seen corresponding path program 1 times [2022-11-22 00:26:55,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:55,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365646135] [2022-11-22 00:26:55,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:55,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 619 trivial. 0 not checked. [2022-11-22 00:26:55,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:55,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365646135] [2022-11-22 00:26:55,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365646135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:55,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:55,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:26:55,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840510789] [2022-11-22 00:26:55,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:55,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:55,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:55,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:55,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:55,734 INFO L87 Difference]: Start difference. First operand 15641 states and 22836 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, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 00:26:58,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:59,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:03,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:27:06,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:27:08,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:11,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:15,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:15,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:27:15,884 INFO L93 Difference]: Finished difference Result 15659 states and 22850 transitions. [2022-11-22 00:27:15,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:27:15,885 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, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 200 [2022-11-22 00:27:15,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:27:15,993 INFO L225 Difference]: With dead ends: 15659 [2022-11-22 00:27:15,993 INFO L226 Difference]: Without dead ends: 15657 [2022-11-22 00:27:16,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:27:16,006 INFO L413 NwaCegarLoop]: 2827 mSDtfsCounter, 2073 mSDsluCounter, 7666 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2077 SdHoareTripleChecker+Valid, 10493 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:27:16,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2077 Valid, 10493 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1151 Invalid, 4 Unknown, 0 Unchecked, 19.0s Time] [2022-11-22 00:27:16,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15657 states. [2022-11-22 00:27:17,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15657 to 15649. [2022-11-22 00:27:17,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15649 states, 8972 states have (on average 1.2307177886758804) internal successors, (11042), 9198 states have internal predecessors, (11042), 5891 states have call successors, (5891), 794 states have call predecessors, (5891), 783 states have return successors, (5909), 5782 states have call predecessors, (5909), 5879 states have call successors, (5909) [2022-11-22 00:27:17,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15649 states to 15649 states and 22842 transitions. [2022-11-22 00:27:17,362 INFO L78 Accepts]: Start accepts. Automaton has 15649 states and 22842 transitions. Word has length 200 [2022-11-22 00:27:17,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:27:17,363 INFO L495 AbstractCegarLoop]: Abstraction has 15649 states and 22842 transitions. [2022-11-22 00:27:17,363 INFO L496 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, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 00:27:17,363 INFO L276 IsEmpty]: Start isEmpty. Operand 15649 states and 22842 transitions. [2022-11-22 00:27:17,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-22 00:27:17,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:27:17,374 INFO L195 NwaCegarLoop]: trace histogram [14, 11, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:27:17,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 00:27:17,374 INFO L420 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)] === [2022-11-22 00:27:17,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:27:17,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1956142272, now seen corresponding path program 1 times [2022-11-22 00:27:17,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:27:17,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224914302] [2022-11-22 00:27:17,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:27:17,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:27:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:27:17,958 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2022-11-22 00:27:17,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:27:17,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224914302] [2022-11-22 00:27:17,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224914302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:27:17,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:27:17,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:27:17,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044102370] [2022-11-22 00:27:17,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:27:17,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:27:17,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:27:17,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:27:17,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:27:17,962 INFO L87 Difference]: Start difference. First operand 15649 states and 22842 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-22 00:27:20,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:21,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:25,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:27:26,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:27:30,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:32,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:34,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:35,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:38,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:39,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:27:39,567 INFO L93 Difference]: Finished difference Result 15667 states and 22856 transitions. [2022-11-22 00:27:39,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:27:39,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 214 [2022-11-22 00:27:39,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:27:39,633 INFO L225 Difference]: With dead ends: 15667 [2022-11-22 00:27:39,633 INFO L226 Difference]: Without dead ends: 15663 [2022-11-22 00:27:39,645 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:27:39,646 INFO L413 NwaCegarLoop]: 2827 mSDtfsCounter, 2069 mSDsluCounter, 7666 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2072 SdHoareTripleChecker+Valid, 10493 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:27:39,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2072 Valid, 10493 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1151 Invalid, 5 Unknown, 0 Unchecked, 20.5s Time] [2022-11-22 00:27:39,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15663 states. [2022-11-22 00:27:41,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15663 to 15655. [2022-11-22 00:27:41,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15655 states, 8977 states have (on average 1.230477887935836) internal successors, (11046), 9202 states have internal predecessors, (11046), 5891 states have call successors, (5891), 796 states have call predecessors, (5891), 784 states have return successors, (5909), 5782 states have call predecessors, (5909), 5879 states have call successors, (5909) [2022-11-22 00:27:41,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15655 states to 15655 states and 22846 transitions. [2022-11-22 00:27:41,205 INFO L78 Accepts]: Start accepts. Automaton has 15655 states and 22846 transitions. Word has length 214 [2022-11-22 00:27:41,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:27:41,205 INFO L495 AbstractCegarLoop]: Abstraction has 15655 states and 22846 transitions. [2022-11-22 00:27:41,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-22 00:27:41,206 INFO L276 IsEmpty]: Start isEmpty. Operand 15655 states and 22846 transitions. [2022-11-22 00:27:41,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-22 00:27:41,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:27:41,215 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 11, 11, 10, 10, 10, 10, 10, 10, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:27:41,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 00:27:41,215 INFO L420 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)] === [2022-11-22 00:27:41,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:27:41,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1839912334, now seen corresponding path program 1 times [2022-11-22 00:27:41,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:27:41,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458345365] [2022-11-22 00:27:41,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:27:41,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:27:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:27:41,705 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 695 trivial. 0 not checked. [2022-11-22 00:27:41,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:27:41,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458345365] [2022-11-22 00:27:41,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458345365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:27:41,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:27:41,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:27:41,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043350845] [2022-11-22 00:27:41,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:27:41,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:27:41,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:27:41,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:27:41,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:27:41,708 INFO L87 Difference]: Start difference. First operand 15655 states and 22846 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, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-22 00:27:44,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:46,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:49,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:27:51,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:27:54,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:58,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:59,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:27:59,498 INFO L93 Difference]: Finished difference Result 15665 states and 22853 transitions. [2022-11-22 00:27:59,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:27:59,502 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, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 210 [2022-11-22 00:27:59,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:27:59,564 INFO L225 Difference]: With dead ends: 15665 [2022-11-22 00:27:59,564 INFO L226 Difference]: Without dead ends: 15592 [2022-11-22 00:27:59,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:27:59,573 INFO L413 NwaCegarLoop]: 2807 mSDtfsCounter, 1951 mSDsluCounter, 7628 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1953 SdHoareTripleChecker+Valid, 10435 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:27:59,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1953 Valid, 10435 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1147 Invalid, 4 Unknown, 0 Unchecked, 16.7s Time] [2022-11-22 00:27:59,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15592 states. [2022-11-22 00:28:00,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15592 to 15584. [2022-11-22 00:28:00,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15584 states, 8939 states have (on average 1.231010180109632) internal successors, (11004), 9161 states have internal predecessors, (11004), 5869 states have call successors, (5869), 783 states have call predecessors, (5869), 773 states have return successors, (5890), 5765 states have call predecessors, (5890), 5860 states have call successors, (5890) [2022-11-22 00:28:01,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15584 states to 15584 states and 22763 transitions. [2022-11-22 00:28:01,026 INFO L78 Accepts]: Start accepts. Automaton has 15584 states and 22763 transitions. Word has length 210 [2022-11-22 00:28:01,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:01,027 INFO L495 AbstractCegarLoop]: Abstraction has 15584 states and 22763 transitions. [2022-11-22 00:28:01,027 INFO L496 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, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-22 00:28:01,028 INFO L276 IsEmpty]: Start isEmpty. Operand 15584 states and 22763 transitions. [2022-11-22 00:28:01,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-22 00:28:01,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:01,037 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:01,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 00:28:01,038 INFO L420 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)] === [2022-11-22 00:28:01,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:01,038 INFO L85 PathProgramCache]: Analyzing trace with hash 2124638851, now seen corresponding path program 1 times [2022-11-22 00:28:01,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:01,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520530687] [2022-11-22 00:28:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:01,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:01,180 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:28:01,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833794828] [2022-11-22 00:28:01,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:01,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:01,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:01,205 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:01,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:28:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:02,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 3585 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:28:02,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:28:02,833 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2022-11-22 00:28:02,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:28:02,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:02,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520530687] [2022-11-22 00:28:02,834 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:28:02,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833794828] [2022-11-22 00:28:02,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833794828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:02,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:02,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:28:02,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546282521] [2022-11-22 00:28:02,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:02,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:28:02,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:02,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:28:02,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:28:02,837 INFO L87 Difference]: Start difference. First operand 15584 states and 22763 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-22 00:28:05,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:28:09,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:28:12,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:28:14,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:28:16,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:16,745 INFO L93 Difference]: Finished difference Result 44618 states and 65176 transitions. [2022-11-22 00:28:16,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:28:16,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 219 [2022-11-22 00:28:16,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:17,059 INFO L225 Difference]: With dead ends: 44618 [2022-11-22 00:28:17,059 INFO L226 Difference]: Without dead ends: 29055 [2022-11-22 00:28:17,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:28:17,161 INFO L413 NwaCegarLoop]: 2663 mSDtfsCounter, 1966 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 41 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 4560 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:17,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1967 Valid, 4560 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 532 Invalid, 3 Unknown, 0 Unchecked, 12.1s Time] [2022-11-22 00:28:17,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29055 states. [2022-11-22 00:28:19,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29055 to 28909. [2022-11-22 00:28:19,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28909 states, 16564 states have (on average 1.2236174836995894) internal successors, (20268), 16985 states have internal predecessors, (20268), 10918 states have call successors, (10918), 1453 states have call predecessors, (10918), 1424 states have return successors, (10993), 10696 states have call predecessors, (10993), 10909 states have call successors, (10993) [2022-11-22 00:28:19,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28909 states to 28909 states and 42179 transitions. [2022-11-22 00:28:19,907 INFO L78 Accepts]: Start accepts. Automaton has 28909 states and 42179 transitions. Word has length 219 [2022-11-22 00:28:19,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:19,908 INFO L495 AbstractCegarLoop]: Abstraction has 28909 states and 42179 transitions. [2022-11-22 00:28:19,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-22 00:28:19,908 INFO L276 IsEmpty]: Start isEmpty. Operand 28909 states and 42179 transitions. [2022-11-22 00:28:19,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-22 00:28:19,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:19,920 INFO L195 NwaCegarLoop]: trace histogram [15, 12, 12, 12, 12, 12, 12, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:19,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 00:28:20,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-22 00:28:20,139 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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)] === [2022-11-22 00:28:20,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:20,139 INFO L85 PathProgramCache]: Analyzing trace with hash -2145476704, now seen corresponding path program 1 times [2022-11-22 00:28:20,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:20,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305460207] [2022-11-22 00:28:20,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:20,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:20,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:20,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305460207] [2022-11-22 00:28:20,376 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-22 00:28:20,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128722446] [2022-11-22 00:28:20,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:20,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:20,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:20,378 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:20,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 00:28:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:21,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 3654 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:28:21,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:28:21,915 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-22 00:28:21,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:28:21,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128722446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:21,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:21,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:28:21,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125699271] [2022-11-22 00:28:21,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:21,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:28:21,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:21,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:28:21,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:28:21,918 INFO L87 Difference]: Start difference. First operand 28909 states and 42179 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-22 00:28:24,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:28:26,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:28:29,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:28:32,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:28:36,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:36,812 INFO L93 Difference]: Finished difference Result 71443 states and 103894 transitions. [2022-11-22 00:28:36,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:28:36,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 243 [2022-11-22 00:28:36,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:37,018 INFO L225 Difference]: With dead ends: 71443 [2022-11-22 00:28:37,018 INFO L226 Difference]: Without dead ends: 42555 [2022-11-22 00:28:37,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:28:37,150 INFO L413 NwaCegarLoop]: 2695 mSDtfsCounter, 1828 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 21 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1830 SdHoareTripleChecker+Valid, 4613 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:37,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1830 Valid, 4613 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 559 Invalid, 4 Unknown, 0 Unchecked, 11.5s Time] [2022-11-22 00:28:37,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42555 states. [2022-11-22 00:28:40,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42555 to 42377. [2022-11-22 00:28:40,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42377 states, 24202 states have (on average 1.211883315428477) internal successors, (29330), 24822 states have internal predecessors, (29330), 15967 states have call successors, (15967), 2253 states have call predecessors, (15967), 2205 states have return successors, (16096), 15623 states have call predecessors, (16096), 15958 states have call successors, (16096) [2022-11-22 00:28:40,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42377 states to 42377 states and 61393 transitions. [2022-11-22 00:28:40,798 INFO L78 Accepts]: Start accepts. Automaton has 42377 states and 61393 transitions. Word has length 243 [2022-11-22 00:28:40,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:40,798 INFO L495 AbstractCegarLoop]: Abstraction has 42377 states and 61393 transitions. [2022-11-22 00:28:40,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-22 00:28:40,799 INFO L276 IsEmpty]: Start isEmpty. Operand 42377 states and 61393 transitions. [2022-11-22 00:28:40,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-11-22 00:28:40,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:40,805 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:40,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 00:28:41,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3071e67f-afbf-4cc2-9bd2-bcfe3d910fd3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:41,018 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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)] === [2022-11-22 00:28:41,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:41,019 INFO L85 PathProgramCache]: Analyzing trace with hash -215991344, now seen corresponding path program 1 times [2022-11-22 00:28:41,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:41,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523225689] [2022-11-22 00:28:41,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:41,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:41,698 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 898 trivial. 0 not checked. [2022-11-22 00:28:41,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:41,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523225689] [2022-11-22 00:28:41,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523225689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:41,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:41,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:28:41,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7146323] [2022-11-22 00:28:41,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:41,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:28:41,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:41,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:28:41,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:28:41,701 INFO L87 Difference]: Start difference. First operand 42377 states and 61393 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-22 00:28:44,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:28:46,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:28:48,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:28:54,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:28:58,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:58,039 INFO L93 Difference]: Finished difference Result 82751 states and 119589 transitions. [2022-11-22 00:28:58,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:28:58,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 293 [2022-11-22 00:28:58,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:58,230 INFO L225 Difference]: With dead ends: 82751 [2022-11-22 00:28:58,230 INFO L226 Difference]: Without dead ends: 40395 [2022-11-22 00:28:58,540 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:28:58,541 INFO L413 NwaCegarLoop]: 3440 mSDtfsCounter, 1620 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 5467 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:58,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 5467 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 692 Invalid, 3 Unknown, 0 Unchecked, 13.3s Time] [2022-11-22 00:28:58,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40395 states. [2022-11-22 00:29:01,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40395 to 40241. [2022-11-22 00:29:01,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40241 states, 23340 states have (on average 1.2103256212510711) internal successors, (28249), 23921 states have internal predecessors, (28249), 14663 states have call successors, (14663), 2276 states have call predecessors, (14663), 2235 states have return successors, (14758), 14315 states have call predecessors, (14758), 14654 states have call successors, (14758) [2022-11-22 00:29:01,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40241 states to 40241 states and 57670 transitions. [2022-11-22 00:29:01,702 INFO L78 Accepts]: Start accepts. Automaton has 40241 states and 57670 transitions. Word has length 293 [2022-11-22 00:29:01,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:29:01,703 INFO L495 AbstractCegarLoop]: Abstraction has 40241 states and 57670 transitions. [2022-11-22 00:29:01,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-22 00:29:01,703 INFO L276 IsEmpty]: Start isEmpty. Operand 40241 states and 57670 transitions. [2022-11-22 00:29:01,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2022-11-22 00:29:01,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:29:01,711 INFO L195 NwaCegarLoop]: trace histogram [21, 14, 14, 14, 14, 14, 14, 9, 9, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:29:01,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 00:29:01,711 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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)] === [2022-11-22 00:29:01,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:29:01,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1135940743, now seen corresponding path program 1 times [2022-11-22 00:29:01,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:29:01,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803384849] [2022-11-22 00:29:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:29:01,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:29:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:29:02,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1094 trivial. 0 not checked. [2022-11-22 00:29:02,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:29:02,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803384849] [2022-11-22 00:29:02,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803384849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:29:02,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:29:02,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:29:02,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767308764] [2022-11-22 00:29:02,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:29:02,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:29:02,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:29:02,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:29:02,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:29:02,209 INFO L87 Difference]: Start difference. First operand 40241 states and 57670 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-22 00:29:05,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:29:08,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:29:10,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:29:13,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:29:15,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:29:18,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:29:20,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:29:20,694 INFO L93 Difference]: Finished difference Result 92341 states and 132232 transitions. [2022-11-22 00:29:20,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:29:20,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 336 [2022-11-22 00:29:20,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:29:20,948 INFO L225 Difference]: With dead ends: 92341 [2022-11-22 00:29:20,948 INFO L226 Difference]: Without dead ends: 52172 [2022-11-22 00:29:21,091 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:29:21,092 INFO L413 NwaCegarLoop]: 3508 mSDtfsCounter, 1620 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 15 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 5528 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:29:21,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 5528 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 703 Invalid, 5 Unknown, 0 Unchecked, 14.9s Time] [2022-11-22 00:29:21,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52172 states. [2022-11-22 00:29:24,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52172 to 52042. [2022-11-22 00:29:24,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52042 states, 30385 states have (on average 1.2091821622511107) internal successors, (36741), 31125 states have internal predecessors, (36741), 18646 states have call successors, (18646), 3056 states have call predecessors, (18646), 3008 states have return successors, (18753), 18188 states have call predecessors, (18753), 18637 states have call successors, (18753) [2022-11-22 00:29:25,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52042 states to 52042 states and 74140 transitions. [2022-11-22 00:29:25,093 INFO L78 Accepts]: Start accepts. Automaton has 52042 states and 74140 transitions. Word has length 336 [2022-11-22 00:29:25,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:29:25,094 INFO L495 AbstractCegarLoop]: Abstraction has 52042 states and 74140 transitions. [2022-11-22 00:29:25,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-22 00:29:25,094 INFO L276 IsEmpty]: Start isEmpty. Operand 52042 states and 74140 transitions. [2022-11-22 00:29:25,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-11-22 00:29:25,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:29:25,100 INFO L195 NwaCegarLoop]: trace histogram [23, 14, 14, 14, 14, 14, 14, 13, 13, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:29:25,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 00:29:25,100 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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)] === [2022-11-22 00:29:25,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:29:25,101 INFO L85 PathProgramCache]: Analyzing trace with hash 18958747, now seen corresponding path program 1 times [2022-11-22 00:29:25,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:29:25,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65024600] [2022-11-22 00:29:25,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:29:25,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:29:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:29:25,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1359 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1345 trivial. 0 not checked. [2022-11-22 00:29:25,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:29:25,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65024600] [2022-11-22 00:29:25,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65024600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:29:25,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:29:25,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:29:25,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907398245] [2022-11-22 00:29:25,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:29:25,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:29:25,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:29:25,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:29:25,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:29:25,724 INFO L87 Difference]: Start difference. First operand 52042 states and 74140 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-22 00:29:28,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:29:29,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:29:32,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:29:34,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:29:36,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:29:40,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:29:43,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:29:49,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:29:49,250 INFO L93 Difference]: Finished difference Result 109549 states and 157933 transitions. [2022-11-22 00:29:49,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:29:49,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 398 [2022-11-22 00:29:49,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:29:49,539 INFO L225 Difference]: With dead ends: 109549 [2022-11-22 00:29:49,539 INFO L226 Difference]: Without dead ends: 70514 [2022-11-22 00:29:49,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:29:49,694 INFO L413 NwaCegarLoop]: 2713 mSDtfsCounter, 771 mSDsluCounter, 4842 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 177 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 7555 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:29:49,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 7555 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 967 Invalid, 4 Unknown, 0 Unchecked, 18.7s Time] [2022-11-22 00:29:49,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70514 states. [2022-11-22 00:29:54,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70514 to 52090. [2022-11-22 00:29:54,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52090 states, 30433 states have (on average 1.208852232773634) internal successors, (36789), 31173 states have internal predecessors, (36789), 18646 states have call successors, (18646), 3056 states have call predecessors, (18646), 3008 states have return successors, (18753), 18188 states have call predecessors, (18753), 18637 states have call successors, (18753) [2022-11-22 00:29:54,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52090 states to 52090 states and 74188 transitions. [2022-11-22 00:29:54,431 INFO L78 Accepts]: Start accepts. Automaton has 52090 states and 74188 transitions. Word has length 398 [2022-11-22 00:29:54,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:29:54,434 INFO L495 AbstractCegarLoop]: Abstraction has 52090 states and 74188 transitions. [2022-11-22 00:29:54,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-22 00:29:54,434 INFO L276 IsEmpty]: Start isEmpty. Operand 52090 states and 74188 transitions. [2022-11-22 00:29:54,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-11-22 00:29:54,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:29:54,444 INFO L195 NwaCegarLoop]: trace histogram [23, 14, 14, 14, 14, 14, 14, 13, 13, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:29:54,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 00:29:54,445 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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)] === [2022-11-22 00:29:54,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:29:54,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1127867207, now seen corresponding path program 1 times [2022-11-22 00:29:54,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:29:54,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60953145] [2022-11-22 00:29:54,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:29:54,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:29:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:29:55,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1359 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1345 trivial. 0 not checked. [2022-11-22 00:29:55,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:29:55,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60953145] [2022-11-22 00:29:55,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60953145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:29:55,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:29:55,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:29:55,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748268585] [2022-11-22 00:29:55,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:29:55,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:29:55,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:29:55,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:29:55,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:29:55,287 INFO L87 Difference]: Start difference. First operand 52090 states and 74188 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-22 00:29:57,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:29:59,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []