./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.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_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/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_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/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_29a8f714-49a7-4bad-ad9d-650d2fa4136a/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 d46a0c21917156d86326b49faaf0b679a3e4aece26c641cfed6d2cba03552492 --- 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 00:28:06,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:28:06,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:28:06,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:28:06,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:28:06,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:28:06,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:28:06,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:28:06,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:28:06,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:28:06,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:28:06,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:28:06,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:28:06,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:28:06,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:28:06,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:28:06,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:28:06,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:28:06,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:28:06,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:28:06,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:28:06,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:28:06,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:28:06,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:28:06,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:28:06,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:28:06,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:28:06,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:28:06,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:28:06,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:28:06,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:28:06,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:28:06,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:28:06,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:28:06,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:28:06,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:28:06,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:28:06,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:28:06,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:28:06,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:28:06,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:28:06,935 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 00:28:06,974 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:28:06,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:28:06,975 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:28:06,975 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:28:06,976 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:28:06,977 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:28:06,977 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:28:06,977 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:28:06,977 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:28:06,977 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:28:06,979 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:28:06,979 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:28:06,979 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:28:06,979 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:28:06,980 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:28:06,980 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:28:06,980 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:28:06,980 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:28:06,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:28:06,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:28:06,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:28:06,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:28:06,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:28:06,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:28:06,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:28:06,983 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:28:06,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:28:06,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:28:06,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:28:06,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:28:06,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:28:06,984 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:28:06,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:28:06,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:28:06,985 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:28:06,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:28:06,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:28:06,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:28:06,986 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_29a8f714-49a7-4bad-ad9d-650d2fa4136a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d46a0c21917156d86326b49faaf0b679a3e4aece26c641cfed6d2cba03552492 [2022-11-22 00:28:07,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:28:07,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:28:07,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:28:07,307 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:28:07,307 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:28:07,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2022-11-22 00:28:10,277 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:28:11,051 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:28:11,051 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2022-11-22 00:28:11,110 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/data/d456ae4c1/657eab7fe7be4cedb0a099e7964fc05e/FLAG0efb474c2 [2022-11-22 00:28:11,131 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/data/d456ae4c1/657eab7fe7be4cedb0a099e7964fc05e [2022-11-22 00:28:11,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:28:11,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:28:11,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:28:11,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:28:11,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:28:11,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:28:11" (1/1) ... [2022-11-22 00:28:11,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15176764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:11, skipping insertion in model container [2022-11-22 00:28:11,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:28:11" (1/1) ... [2022-11-22 00:28:11,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:28:11,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:28:15,242 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_29a8f714-49a7-4bad-ad9d-650d2fa4136a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[450587,450600] [2022-11-22 00:28:15,249 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_29a8f714-49a7-4bad-ad9d-650d2fa4136a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[450756,450769] [2022-11-22 00:28:15,255 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_29a8f714-49a7-4bad-ad9d-650d2fa4136a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[450923,450936] [2022-11-22 00:28:15,256 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_29a8f714-49a7-4bad-ad9d-650d2fa4136a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[451091,451104] [2022-11-22 00:28:15,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:28:15,365 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:28:15,909 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_29a8f714-49a7-4bad-ad9d-650d2fa4136a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[450587,450600] [2022-11-22 00:28:15,909 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_29a8f714-49a7-4bad-ad9d-650d2fa4136a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[450756,450769] [2022-11-22 00:28:15,910 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_29a8f714-49a7-4bad-ad9d-650d2fa4136a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[450923,450936] [2022-11-22 00:28:15,910 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_29a8f714-49a7-4bad-ad9d-650d2fa4136a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[451091,451104] [2022-11-22 00:28:15,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:28:16,173 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:28:16,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:16 WrapperNode [2022-11-22 00:28:16,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:28:16,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:28:16,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:28:16,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:28:16,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:16" (1/1) ... [2022-11-22 00:28:16,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:16" (1/1) ... [2022-11-22 00:28:16,569 INFO L138 Inliner]: procedures = 547, calls = 4350, calls flagged for inlining = 248, calls inlined = 226, statements flattened = 8732 [2022-11-22 00:28:16,569 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:28:16,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:28:16,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:28:16,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:28:16,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:16" (1/1) ... [2022-11-22 00:28:16,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:16" (1/1) ... [2022-11-22 00:28:16,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:16" (1/1) ... [2022-11-22 00:28:16,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:16" (1/1) ... [2022-11-22 00:28:16,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:16" (1/1) ... [2022-11-22 00:28:16,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:16" (1/1) ... [2022-11-22 00:28:16,948 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:16" (1/1) ... [2022-11-22 00:28:16,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:16" (1/1) ... [2022-11-22 00:28:17,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:28:17,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:28:17,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:28:17,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:28:17,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:16" (1/1) ... [2022-11-22 00:28:17,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:28:17,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:17,077 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:28:17,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:28:17,122 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-22 00:28:17,123 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-22 00:28:17,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 00:28:17,123 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 00:28:17,123 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-22 00:28:17,123 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-22 00:28:17,123 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-11-22 00:28:17,124 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-11-22 00:28:17,124 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_nway_reset [2022-11-22 00:28:17,124 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_nway_reset [2022-11-22 00:28:17,124 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 00:28:17,124 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 00:28:17,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_87 [2022-11-22 00:28:17,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_87 [2022-11-22 00:28:17,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 00:28:17,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 00:28:17,125 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-22 00:28:17,125 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-22 00:28:17,126 INFO L130 BoogieDeclarations]: Found specification of procedure set_8021q_mode [2022-11-22 00:28:17,126 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8021q_mode [2022-11-22 00:28:17,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_82 [2022-11-22 00:28:17,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_82 [2022-11-22 00:28:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_remove_one [2022-11-22 00:28:17,128 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_remove_one [2022-11-22 00:28:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 00:28:17,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 00:28:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2022-11-22 00:28:17,128 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2022-11-22 00:28:17,129 INFO L130 BoogieDeclarations]: Found specification of procedure issue_and_wait [2022-11-22 00:28:17,129 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_and_wait [2022-11-22 00:28:17,129 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 00:28:17,129 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 00:28:17,130 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-22 00:28:17,130 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-22 00:28:17,130 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-22 00:28:17,130 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-22 00:28:17,130 INFO L130 BoogieDeclarations]: Found specification of procedure window_write32 [2022-11-22 00:28:17,130 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write32 [2022-11-22 00:28:17,131 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-22 00:28:17,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-22 00:28:17,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_65 [2022-11-22 00:28:17,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_65 [2022-11-22 00:28:17,131 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-22 00:28:17,132 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-22 00:28:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_5 [2022-11-22 00:28:17,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_5 [2022-11-22 00:28:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 00:28:17,133 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 00:28:17,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_window_lock_of_vortex_private [2022-11-22 00:28:17,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_window_lock_of_vortex_private [2022-11-22 00:28:17,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_vortex_private [2022-11-22 00:28:17,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_vortex_private [2022-11-22 00:28:17,133 INFO L130 BoogieDeclarations]: Found specification of procedure window_set [2022-11-22 00:28:17,133 INFO L138 BoogieDeclarations]: Found implementation of procedure window_set [2022-11-22 00:28:17,134 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-22 00:28:17,134 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-22 00:28:17,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 00:28:17,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 00:28:17,134 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 00:28:17,135 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 00:28:17,135 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-22 00:28:17,135 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-22 00:28:17,135 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-22 00:28:17,135 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-22 00:28:17,136 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-11-22 00:28:17,136 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-11-22 00:28:17,137 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 00:28:17,137 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 00:28:17,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 00:28:17,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 00:28:17,138 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2022-11-22 00:28:17,138 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2022-11-22 00:28:17,138 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 00:28:17,138 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 00:28:17,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_5_2 [2022-11-22 00:28:17,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_5_2 [2022-11-22 00:28:17,140 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-22 00:28:17,140 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-22 00:28:17,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:28:17,140 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tx_timestamp [2022-11-22 00:28:17,140 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tx_timestamp [2022-11-22 00:28:17,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-22 00:28:17,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-22 00:28:17,141 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 00:28:17,141 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 00:28:17,141 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-22 00:28:17,142 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-22 00:28:17,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 00:28:17,142 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_tx_timeout [2022-11-22 00:28:17,142 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_tx_timeout [2022-11-22 00:28:17,142 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2022-11-22 00:28:17,143 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2022-11-22 00:28:17,143 INFO L130 BoogieDeclarations]: Found specification of procedure ioport_map [2022-11-22 00:28:17,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ioport_map [2022-11-22 00:28:17,143 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 00:28:17,144 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 00:28:17,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-22 00:28:17,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-22 00:28:17,144 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-22 00:28:17,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-22 00:28:17,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 00:28:17,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 00:28:17,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 00:28:17,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:28:17,146 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_interrupt [2022-11-22 00:28:17,149 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_interrupt [2022-11-22 00:28:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-22 00:28:17,150 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-22 00:28:17,151 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 00:28:17,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 00:28:17,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 00:28:17,153 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 00:28:17,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 00:28:17,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 00:28:17,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 00:28:17,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 00:28:17,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 00:28:17,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 00:28:17,159 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_set_duplex [2022-11-22 00:28:17,159 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_set_duplex [2022-11-22 00:28:17,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_83 [2022-11-22 00:28:17,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_83 [2022-11-22 00:28:17,160 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2022-11-22 00:28:17,160 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2022-11-22 00:28:17,160 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-11-22 00:28:17,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-11-22 00:28:17,160 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 00:28:17,160 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 00:28:17,160 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_error [2022-11-22 00:28:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_error [2022-11-22 00:28:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 00:28:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 00:28:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_close [2022-11-22 00:28:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_close [2022-11-22 00:28:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 00:28:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 00:28:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:28:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2022-11-22 00:28:17,162 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2022-11-22 00:28:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-22 00:28:17,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-22 00:28:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:28:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 00:28:17,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 00:28:17,163 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 00:28:17,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 00:28:17,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 00:28:17,163 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-22 00:28:17,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-22 00:28:17,163 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 00:28:17,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 00:28:17,164 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-22 00:28:17,164 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-22 00:28:17,164 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 00:28:17,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 00:28:17,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_98 [2022-11-22 00:28:17,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_98 [2022-11-22 00:28:17,164 INFO L130 BoogieDeclarations]: Found specification of procedure acpi_set_WOL [2022-11-22 00:28:17,165 INFO L138 BoogieDeclarations]: Found implementation of procedure acpi_set_WOL [2022-11-22 00:28:17,165 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-22 00:28:17,165 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-22 00:28:17,165 INFO L130 BoogieDeclarations]: Found specification of procedure window_write16 [2022-11-22 00:28:17,165 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write16 [2022-11-22 00:28:17,166 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2022-11-22 00:28:17,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2022-11-22 00:28:17,166 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-22 00:28:17,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-22 00:28:17,166 INFO L130 BoogieDeclarations]: Found specification of procedure window_read8 [2022-11-22 00:28:17,166 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read8 [2022-11-22 00:28:17,166 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-22 00:28:17,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-22 00:28:17,167 INFO L130 BoogieDeclarations]: Found specification of procedure update_stats [2022-11-22 00:28:17,167 INFO L138 BoogieDeclarations]: Found implementation of procedure update_stats [2022-11-22 00:28:17,167 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 00:28:17,167 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 00:28:17,167 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-22 00:28:17,167 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-22 00:28:17,167 INFO L130 BoogieDeclarations]: Found specification of procedure poll_vortex [2022-11-22 00:28:17,168 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_vortex [2022-11-22 00:28:17,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 00:28:17,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 00:28:17,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_window_lock_of_vortex_private [2022-11-22 00:28:17,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_window_lock_of_vortex_private [2022-11-22 00:28:17,168 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_check_media [2022-11-22 00:28:17,168 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_check_media [2022-11-22 00:28:17,169 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-22 00:28:17,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-22 00:28:17,169 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-22 00:28:17,169 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-22 00:28:17,169 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_rx [2022-11-22 00:28:17,169 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_rx [2022-11-22 00:28:17,169 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2022-11-22 00:28:17,170 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2022-11-22 00:28:17,170 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_open [2022-11-22 00:28:17,170 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_open [2022-11-22 00:28:17,170 INFO L130 BoogieDeclarations]: Found specification of procedure dump_tx_ring [2022-11-22 00:28:17,170 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_tx_ring [2022-11-22 00:28:17,170 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-22 00:28:17,170 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-22 00:28:17,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:28:17,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:28:17,171 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_probe1 [2022-11-22 00:28:17,171 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_probe1 [2022-11-22 00:28:17,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 00:28:17,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 00:28:17,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 00:28:17,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 00:28:17,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 00:28:17,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 00:28:17,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 00:28:17,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 00:28:17,172 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2022-11-22 00:28:17,172 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2022-11-22 00:28:17,172 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-22 00:28:17,173 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-22 00:28:17,173 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 00:28:17,173 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 00:28:17,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-22 00:28:17,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-22 00:28:17,173 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 00:28:17,173 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 00:28:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-22 00:28:17,174 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-22 00:28:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:28:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2022-11-22 00:28:17,174 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2022-11-22 00:28:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 00:28:17,174 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 00:28:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 00:28:17,175 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_suspend [2022-11-22 00:28:17,175 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_suspend [2022-11-22 00:28:17,176 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_interrupt [2022-11-22 00:28:17,179 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_interrupt [2022-11-22 00:28:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_81 [2022-11-22 00:28:17,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_81 [2022-11-22 00:28:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 00:28:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 00:28:17,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 00:28:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure rx_oom_timer [2022-11-22 00:28:17,180 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_oom_timer [2022-11-22 00:28:17,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-22 00:28:17,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-22 00:28:17,183 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 00:28:17,183 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 00:28:17,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 00:28:17,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 00:28:17,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-22 00:28:17,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-22 00:28:17,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_108 [2022-11-22 00:28:17,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_108 [2022-11-22 00:28:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-22 00:28:17,184 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-22 00:28:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2022-11-22 00:28:17,184 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2022-11-22 00:28:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_89 [2022-11-22 00:28:17,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_89 [2022-11-22 00:28:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_88 [2022-11-22 00:28:17,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_88 [2022-11-22 00:28:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_resume [2022-11-22 00:28:17,185 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_resume [2022-11-22 00:28:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2022-11-22 00:28:17,185 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2022-11-22 00:28:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-22 00:28:17,185 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-22 00:28:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_rx [2022-11-22 00:28:17,186 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_rx [2022-11-22 00:28:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 00:28:17,186 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 00:28:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 00:28:17,186 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 00:28:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-22 00:28:17,186 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-22 00:28:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 00:28:17,187 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 00:28:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_delay [2022-11-22 00:28:17,187 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_delay [2022-11-22 00:28:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_timer [2022-11-22 00:28:17,187 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_timer [2022-11-22 00:28:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:28:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_down [2022-11-22 00:28:17,188 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_down [2022-11-22 00:28:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2022-11-22 00:28:17,188 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2022-11-22 00:28:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-22 00:28:17,188 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-22 00:28:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 00:28:17,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 00:28:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure window_write8 [2022-11-22 00:28:17,189 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write8 [2022-11-22 00:28:17,189 INFO L130 BoogieDeclarations]: Found specification of procedure window_read32 [2022-11-22 00:28:17,189 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read32 [2022-11-22 00:28:17,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_10_2 [2022-11-22 00:28:17,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_10_2 [2022-11-22 00:28:17,189 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-22 00:28:17,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-22 00:28:17,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_109 [2022-11-22 00:28:17,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_109 [2022-11-22 00:28:17,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_94 [2022-11-22 00:28:17,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_94 [2022-11-22 00:28:17,190 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32_rep [2022-11-22 00:28:17,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32_rep [2022-11-22 00:28:17,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_90 [2022-11-22 00:28:17,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_90 [2022-11-22 00:28:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-22 00:28:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-22 00:28:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_up [2022-11-22 00:28:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_up [2022-11-22 00:28:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure window_read16 [2022-11-22 00:28:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read16 [2022-11-22 00:28:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 00:28:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 00:28:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-22 00:28:17,192 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-22 00:28:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-22 00:28:17,192 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-22 00:28:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-22 00:28:17,192 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-22 00:28:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_vortex_private [2022-11-22 00:28:17,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_vortex_private [2022-11-22 00:28:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-22 00:28:17,193 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-22 00:28:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:28:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 00:28:17,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 00:28:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-22 00:28:17,193 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-22 00:28:18,459 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:28:18,463 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:28:20,816 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 00:28:27,379 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:28:30,728 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:28:30,728 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-22 00:28:30,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:28:30 BoogieIcfgContainer [2022-11-22 00:28:30,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:28:30,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:28:30,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:28:30,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:28:30,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:28:11" (1/3) ... [2022-11-22 00:28:30,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd0d329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:28:30, skipping insertion in model container [2022-11-22 00:28:30,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:16" (2/3) ... [2022-11-22 00:28:30,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd0d329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:28:30, skipping insertion in model container [2022-11-22 00:28:30,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:28:30" (3/3) ... [2022-11-22 00:28:30,748 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2022-11-22 00:28:30,768 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:28:30,769 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 00:28:30,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:28:30,876 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;@6db4b7c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:28:30,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 00:28:30,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 2100 states, 1184 states have (on average 1.304054054054054) internal successors, (1544), 1272 states have internal predecessors, (1544), 758 states have call successors, (758), 155 states have call predecessors, (758), 154 states have return successors, (751), 733 states have call predecessors, (751), 751 states have call successors, (751) [2022-11-22 00:28:30,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-22 00:28:30,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:30,907 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-22 00:28:30,908 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 00:28:30,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:30,914 INFO L85 PathProgramCache]: Analyzing trace with hash -285944674, now seen corresponding path program 1 times [2022-11-22 00:28:30,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:30,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596756437] [2022-11-22 00:28:30,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:30,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:32,636 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 00:28:32,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:32,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596756437] [2022-11-22 00:28:32,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596756437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:32,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:32,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:28:32,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475414227] [2022-11-22 00:28:32,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:32,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:28:32,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:32,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:28:32,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:28:32,698 INFO L87 Difference]: Start difference. First operand has 2100 states, 1184 states have (on average 1.304054054054054) internal successors, (1544), 1272 states have internal predecessors, (1544), 758 states have call successors, (758), 155 states have call predecessors, (758), 154 states have return successors, (751), 733 states have call predecessors, (751), 751 states have call successors, (751) Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 00:28:34,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:28:36,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:28:38,094 WARN L539 Checker$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 00:28:39,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:28:45,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:45,665 INFO L93 Difference]: Finished difference Result 4182 states and 6314 transitions. [2022-11-22 00:28:45,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:28:45,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 37 [2022-11-22 00:28:45,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:45,698 INFO L225 Difference]: With dead ends: 4182 [2022-11-22 00:28:45,698 INFO L226 Difference]: Without dead ends: 2090 [2022-11-22 00:28:45,719 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 00:28:45,722 INFO L413 NwaCegarLoop]: 2673 mSDtfsCounter, 3027 mSDsluCounter, 5331 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 8004 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:45,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 8004 Invalid, 1138 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1136 Invalid, 1 Unknown, 0 Unchecked, 12.6s Time] [2022-11-22 00:28:45,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2022-11-22 00:28:45,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 2090. [2022-11-22 00:28:45,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 1182 states have (on average 1.2969543147208122) internal successors, (1533), 1266 states have internal predecessors, (1533), 751 states have call successors, (751), 155 states have call predecessors, (751), 154 states have return successors, (748), 730 states have call predecessors, (748), 748 states have call successors, (748) [2022-11-22 00:28:45,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3032 transitions. [2022-11-22 00:28:45,969 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3032 transitions. Word has length 37 [2022-11-22 00:28:45,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:45,970 INFO L495 AbstractCegarLoop]: Abstraction has 2090 states and 3032 transitions. [2022-11-22 00:28:45,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 00:28:45,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3032 transitions. [2022-11-22 00:28:45,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-22 00:28:45,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:45,974 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:45,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:28:45,975 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:28:45,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:45,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1800038699, now seen corresponding path program 1 times [2022-11-22 00:28:45,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:45,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029596683] [2022-11-22 00:28:45,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:45,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:46,857 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 00:28:46,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:46,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029596683] [2022-11-22 00:28:46,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029596683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:46,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:46,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:28:46,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641360932] [2022-11-22 00:28:46,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:46,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:28:46,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:46,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:28:46,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:28:46,862 INFO L87 Difference]: Start difference. First operand 2090 states and 3032 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 00:28:49,180 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 00:28:50,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:28:52,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:28:53,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:28:58,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:58,587 INFO L93 Difference]: Finished difference Result 3420 states and 4901 transitions. [2022-11-22 00:28:58,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:28:58,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2022-11-22 00:28:58,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:58,614 INFO L225 Difference]: With dead ends: 3420 [2022-11-22 00:28:58,614 INFO L226 Difference]: Without dead ends: 3418 [2022-11-22 00:28:58,619 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 00:28:58,620 INFO L413 NwaCegarLoop]: 3260 mSDtfsCounter, 2499 mSDsluCounter, 8574 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2513 SdHoareTripleChecker+Valid, 11834 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:58,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2513 Valid, 11834 Invalid, 1505 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1503 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2022-11-22 00:28:58,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3418 states. [2022-11-22 00:28:58,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3418 to 3411. [2022-11-22 00:28:58,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3411 states, 1906 states have (on average 1.2864637985309548) internal successors, (2452), 2042 states have internal predecessors, (2452), 1222 states have call successors, (1222), 281 states have call predecessors, (1222), 280 states have return successors, (1219), 1191 states have call predecessors, (1219), 1219 states have call successors, (1219) [2022-11-22 00:28:58,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3411 states to 3411 states and 4893 transitions. [2022-11-22 00:28:58,827 INFO L78 Accepts]: Start accepts. Automaton has 3411 states and 4893 transitions. Word has length 42 [2022-11-22 00:28:58,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:58,827 INFO L495 AbstractCegarLoop]: Abstraction has 3411 states and 4893 transitions. [2022-11-22 00:28:58,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 00:28:58,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3411 states and 4893 transitions. [2022-11-22 00:28:58,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-22 00:28:58,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:58,836 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-22 00:28:58,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:28:58,837 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 00:28:58,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:58,837 INFO L85 PathProgramCache]: Analyzing trace with hash -250235202, now seen corresponding path program 1 times [2022-11-22 00:28:58,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:58,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465694607] [2022-11-22 00:28:58,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:58,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:59,809 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:28:59,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:59,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465694607] [2022-11-22 00:28:59,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465694607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:59,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:59,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:28:59,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117577220] [2022-11-22 00:28:59,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:59,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:28:59,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:59,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:28:59,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:28:59,814 INFO L87 Difference]: Start difference. First operand 3411 states and 4893 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 00:29:02,051 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 00:29:03,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:29:05,606 WARN L539 Checker$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 00:29:07,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:29:08,864 WARN L539 Checker$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 00:29:14,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:29:14,436 INFO L93 Difference]: Finished difference Result 3424 states and 4904 transitions. [2022-11-22 00:29:14,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:29:14,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 47 [2022-11-22 00:29:14,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:29:14,463 INFO L225 Difference]: With dead ends: 3424 [2022-11-22 00:29:14,464 INFO L226 Difference]: Without dead ends: 3422 [2022-11-22 00:29:14,467 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 00:29:14,472 INFO L413 NwaCegarLoop]: 3260 mSDtfsCounter, 2499 mSDsluCounter, 8574 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2512 SdHoareTripleChecker+Valid, 11834 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:29:14,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2512 Valid, 11834 Invalid, 1505 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1501 Invalid, 3 Unknown, 0 Unchecked, 14.3s Time] [2022-11-22 00:29:14,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3422 states. [2022-11-22 00:29:14,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3422 to 3415. [2022-11-22 00:29:14,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3415 states, 1909 states have (on average 1.286013619696176) internal successors, (2455), 2045 states have internal predecessors, (2455), 1222 states have call successors, (1222), 282 states have call predecessors, (1222), 281 states have return successors, (1219), 1191 states have call predecessors, (1219), 1219 states have call successors, (1219) [2022-11-22 00:29:14,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3415 states to 3415 states and 4896 transitions. [2022-11-22 00:29:14,757 INFO L78 Accepts]: Start accepts. Automaton has 3415 states and 4896 transitions. Word has length 47 [2022-11-22 00:29:14,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:29:14,758 INFO L495 AbstractCegarLoop]: Abstraction has 3415 states and 4896 transitions. [2022-11-22 00:29:14,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 00:29:14,759 INFO L276 IsEmpty]: Start isEmpty. Operand 3415 states and 4896 transitions. [2022-11-22 00:29:14,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-22 00:29:14,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:29:14,760 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:14,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:29:14,761 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 00:29:14,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:29:14,762 INFO L85 PathProgramCache]: Analyzing trace with hash 33578420, now seen corresponding path program 1 times [2022-11-22 00:29:14,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:29:14,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626959795] [2022-11-22 00:29:14,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:29:14,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:29:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:29:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-22 00:29:15,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:29:15,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626959795] [2022-11-22 00:29:15,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626959795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:29:15,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:29:15,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:29:15,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094701814] [2022-11-22 00:29:15,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:29:15,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:29:15,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:29:15,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:29:15,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:29:15,710 INFO L87 Difference]: Start difference. First operand 3415 states and 4896 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 00:29:17,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:29:19,144 WARN L539 Checker$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 00:29:21,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:29:23,265 WARN L539 Checker$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 00:29:27,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:29:27,682 INFO L93 Difference]: Finished difference Result 3451 states and 4927 transitions. [2022-11-22 00:29:27,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:29:27,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 60 [2022-11-22 00:29:27,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:29:27,702 INFO L225 Difference]: With dead ends: 3451 [2022-11-22 00:29:27,703 INFO L226 Difference]: Without dead ends: 3449 [2022-11-22 00:29:27,706 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 00:29:27,706 INFO L413 NwaCegarLoop]: 3241 mSDtfsCounter, 2546 mSDsluCounter, 8497 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2558 SdHoareTripleChecker+Valid, 11738 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:29:27,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2558 Valid, 11738 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1475 Invalid, 3 Unknown, 0 Unchecked, 11.7s Time] [2022-11-22 00:29:27,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3449 states. [2022-11-22 00:29:27,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3449 to 3441. [2022-11-22 00:29:27,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3441 states, 1923 states have (on average 1.28393135725429) internal successors, (2469), 2060 states have internal predecessors, (2469), 1226 states have call successors, (1226), 290 states have call predecessors, (1226), 289 states have return successors, (1223), 1194 states have call predecessors, (1223), 1223 states have call successors, (1223) [2022-11-22 00:29:27,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3441 states to 3441 states and 4918 transitions. [2022-11-22 00:29:27,911 INFO L78 Accepts]: Start accepts. Automaton has 3441 states and 4918 transitions. Word has length 60 [2022-11-22 00:29:27,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:29:27,912 INFO L495 AbstractCegarLoop]: Abstraction has 3441 states and 4918 transitions. [2022-11-22 00:29:27,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 00:29:27,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3441 states and 4918 transitions. [2022-11-22 00:29:27,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-22 00:29:27,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:29:27,915 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:27,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:29:27,915 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 00:29:27,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:29:27,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1638296897, now seen corresponding path program 1 times [2022-11-22 00:29:27,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:29:27,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274668399] [2022-11-22 00:29:27,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:29:27,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:29:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:29:28,612 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-22 00:29:28,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:29:28,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274668399] [2022-11-22 00:29:28,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274668399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:29:28,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:29:28,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:29:28,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607728496] [2022-11-22 00:29:28,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:29:28,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:29:28,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:29:28,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:29:28,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:29:28,631 INFO L87 Difference]: Start difference. First operand 3441 states and 4918 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-22 00:29:30,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:29:32,009 WARN L539 Checker$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 00:29:34,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:29:35,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:29:37,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:29:39,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:29:42,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:29:42,219 INFO L93 Difference]: Finished difference Result 3447 states and 4923 transitions. [2022-11-22 00:29:42,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:29:42,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 65 [2022-11-22 00:29:42,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:29:42,239 INFO L225 Difference]: With dead ends: 3447 [2022-11-22 00:29:42,240 INFO L226 Difference]: Without dead ends: 3445 [2022-11-22 00:29:42,242 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 00:29:42,243 INFO L413 NwaCegarLoop]: 2657 mSDtfsCounter, 2998 mSDsluCounter, 5293 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3007 SdHoareTripleChecker+Valid, 7950 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:29:42,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3007 Valid, 7950 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1134 Invalid, 3 Unknown, 0 Unchecked, 13.4s Time] [2022-11-22 00:29:42,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3445 states. [2022-11-22 00:29:42,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3445 to 3445. [2022-11-22 00:29:42,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3445 states, 1926 states have (on average 1.2834890965732086) internal successors, (2472), 2063 states have internal predecessors, (2472), 1226 states have call successors, (1226), 291 states have call predecessors, (1226), 290 states have return successors, (1223), 1194 states have call predecessors, (1223), 1223 states have call successors, (1223) [2022-11-22 00:29:42,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3445 states to 3445 states and 4921 transitions. [2022-11-22 00:29:42,467 INFO L78 Accepts]: Start accepts. Automaton has 3445 states and 4921 transitions. Word has length 65 [2022-11-22 00:29:42,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:29:42,468 INFO L495 AbstractCegarLoop]: Abstraction has 3445 states and 4921 transitions. [2022-11-22 00:29:42,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-22 00:29:42,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3445 states and 4921 transitions. [2022-11-22 00:29:42,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-22 00:29:42,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:29:42,470 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 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] [2022-11-22 00:29:42,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:29:42,470 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 00:29:42,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:29:42,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1207456149, now seen corresponding path program 1 times [2022-11-22 00:29:42,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:29:42,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809522359] [2022-11-22 00:29:42,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:29:42,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:29:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:29:43,259 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-22 00:29:43,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:29:43,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809522359] [2022-11-22 00:29:43,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809522359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:29:43,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:29:43,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:29:43,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856556857] [2022-11-22 00:29:43,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:29:43,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:29:43,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:29:43,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:29:43,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:29:43,263 INFO L87 Difference]: Start difference. First operand 3445 states and 4921 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-22 00:29:44,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:29:46,781 WARN L539 Checker$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 00:29:48,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:29:50,896 WARN L539 Checker$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 00:29:55,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:29:55,759 INFO L93 Difference]: Finished difference Result 3459 states and 4933 transitions. [2022-11-22 00:29:55,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:29:55,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 62 [2022-11-22 00:29:55,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:29:55,782 INFO L225 Difference]: With dead ends: 3459 [2022-11-22 00:29:55,783 INFO L226 Difference]: Without dead ends: 3457 [2022-11-22 00:29:55,785 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 00:29:55,786 INFO L413 NwaCegarLoop]: 3241 mSDtfsCounter, 2552 mSDsluCounter, 8497 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2562 SdHoareTripleChecker+Valid, 11738 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:29:55,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2562 Valid, 11738 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1475 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2022-11-22 00:29:55,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2022-11-22 00:29:56,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 3449. [2022-11-22 00:29:56,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3449 states, 1929 states have (on average 1.2830482115085537) internal successors, (2475), 2066 states have internal predecessors, (2475), 1226 states have call successors, (1226), 292 states have call predecessors, (1226), 291 states have return successors, (1223), 1194 states have call predecessors, (1223), 1223 states have call successors, (1223) [2022-11-22 00:29:56,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 4924 transitions. [2022-11-22 00:29:56,114 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 4924 transitions. Word has length 62 [2022-11-22 00:29:56,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:29:56,114 INFO L495 AbstractCegarLoop]: Abstraction has 3449 states and 4924 transitions. [2022-11-22 00:29:56,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-22 00:29:56,115 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 4924 transitions. [2022-11-22 00:29:56,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-22 00:29:56,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:29:56,118 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 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] [2022-11-22 00:29:56,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:29:56,118 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 00:29:56,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:29:56,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1534192898, now seen corresponding path program 1 times [2022-11-22 00:29:56,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:29:56,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261920816] [2022-11-22 00:29:56,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:29:56,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:29:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:29:56,765 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-22 00:29:56,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:29:56,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261920816] [2022-11-22 00:29:56,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261920816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:29:56,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:29:56,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:29:56,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100905139] [2022-11-22 00:29:56,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:29:56,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:29:56,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:29:56,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:29:56,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:29:56,768 INFO L87 Difference]: Start difference. First operand 3449 states and 4924 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-22 00:29:58,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:30:00,920 WARN L539 Checker$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 00:30:02,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:30:05,037 WARN L539 Checker$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 00:30:12,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:30:14,175 WARN L539 Checker$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 00:30:16,182 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 00:30:16,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:30:16,810 INFO L93 Difference]: Finished difference Result 6237 states and 8874 transitions. [2022-11-22 00:30:16,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:30:16,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2022-11-22 00:30:16,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:30:16,871 INFO L225 Difference]: With dead ends: 6237 [2022-11-22 00:30:16,872 INFO L226 Difference]: Without dead ends: 6235 [2022-11-22 00:30:16,877 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 00:30:16,878 INFO L413 NwaCegarLoop]: 3973 mSDtfsCounter, 2544 mSDsluCounter, 10505 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2551 SdHoareTripleChecker+Valid, 14478 SdHoareTripleChecker+Invalid, 1921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:30:16,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2551 Valid, 14478 Invalid, 1921 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1912 Invalid, 6 Unknown, 0 Unchecked, 19.6s Time] [2022-11-22 00:30:16,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6235 states. [2022-11-22 00:30:17,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6235 to 6202. [2022-11-22 00:30:17,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6202 states, 3471 states have (on average 1.2768654566407376) internal successors, (4432), 3717 states have internal predecessors, (4432), 2189 states have call successors, (2189), 561 states have call predecessors, (2189), 539 states have return successors, (2217), 2105 states have call predecessors, (2217), 2183 states have call successors, (2217) [2022-11-22 00:30:17,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6202 states to 6202 states and 8838 transitions. [2022-11-22 00:30:17,452 INFO L78 Accepts]: Start accepts. Automaton has 6202 states and 8838 transitions. Word has length 67 [2022-11-22 00:30:17,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:30:17,453 INFO L495 AbstractCegarLoop]: Abstraction has 6202 states and 8838 transitions. [2022-11-22 00:30:17,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-22 00:30:17,453 INFO L276 IsEmpty]: Start isEmpty. Operand 6202 states and 8838 transitions. [2022-11-22 00:30:17,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-22 00:30:17,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:30:17,455 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 3, 3, 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] [2022-11-22 00:30:17,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:30:17,456 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 00:30:17,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:30:17,456 INFO L85 PathProgramCache]: Analyzing trace with hash -407706891, now seen corresponding path program 1 times [2022-11-22 00:30:17,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:30:17,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633784453] [2022-11-22 00:30:17,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:30:17,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:30:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:30:18,078 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-22 00:30:18,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:30:18,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633784453] [2022-11-22 00:30:18,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633784453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:30:18,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:30:18,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:30:18,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90442127] [2022-11-22 00:30:18,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:30:18,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:30:18,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:30:18,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:30:18,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:30:18,081 INFO L87 Difference]: Start difference. First operand 6202 states and 8838 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-22 00:30:20,311 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 00:30:21,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:30:24,560 WARN L539 Checker$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 00:30:29,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:30:29,943 INFO L93 Difference]: Finished difference Result 6222 states and 8857 transitions. [2022-11-22 00:30:29,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:30:29,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 72 [2022-11-22 00:30:29,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:30:29,975 INFO L225 Difference]: With dead ends: 6222 [2022-11-22 00:30:29,975 INFO L226 Difference]: Without dead ends: 6220 [2022-11-22 00:30:29,980 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 00:30:29,981 INFO L413 NwaCegarLoop]: 3239 mSDtfsCounter, 2499 mSDsluCounter, 8532 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2507 SdHoareTripleChecker+Valid, 11771 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:30:29,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2507 Valid, 11771 Invalid, 1487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1484 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2022-11-22 00:30:29,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6220 states. [2022-11-22 00:30:30,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6220 to 6216. [2022-11-22 00:30:30,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6216 states, 3481 states have (on average 1.2760700948003447) internal successors, (4442), 3729 states have internal predecessors, (4442), 2189 states have call successors, (2189), 563 states have call predecessors, (2189), 543 states have return successors, (2221), 2105 states have call predecessors, (2221), 2183 states have call successors, (2221) [2022-11-22 00:30:30,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 8852 transitions. [2022-11-22 00:30:30,554 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 8852 transitions. Word has length 72 [2022-11-22 00:30:30,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:30:30,555 INFO L495 AbstractCegarLoop]: Abstraction has 6216 states and 8852 transitions. [2022-11-22 00:30:30,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-22 00:30:30,556 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 8852 transitions. [2022-11-22 00:30:30,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-22 00:30:30,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:30:30,558 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 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] [2022-11-22 00:30:30,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:30:30,559 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 00:30:30,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:30:30,559 INFO L85 PathProgramCache]: Analyzing trace with hash -607023842, now seen corresponding path program 1 times [2022-11-22 00:30:30,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:30:30,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540560037] [2022-11-22 00:30:30,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:30:30,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:30:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:30:31,215 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-22 00:30:31,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:30:31,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540560037] [2022-11-22 00:30:31,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540560037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:30:31,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:30:31,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:30:31,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136940104] [2022-11-22 00:30:31,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:30:31,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:30:31,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:30:31,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:30:31,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:30:31,218 INFO L87 Difference]: Start difference. First operand 6216 states and 8852 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-22 00:30:33,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:30:38,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:30:38,996 INFO L93 Difference]: Finished difference Result 6534 states and 9211 transitions. [2022-11-22 00:30:38,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:30:38,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2022-11-22 00:30:38,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:30:39,027 INFO L225 Difference]: With dead ends: 6534 [2022-11-22 00:30:39,027 INFO L226 Difference]: Without dead ends: 6532 [2022-11-22 00:30:39,033 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 00:30:39,033 INFO L413 NwaCegarLoop]: 2684 mSDtfsCounter, 2936 mSDsluCounter, 5499 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2941 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:30:39,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2941 Valid, 8183 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-22 00:30:39,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6532 states. [2022-11-22 00:30:39,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6532 to 6528. [2022-11-22 00:30:39,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6528 states, 3636 states have (on average 1.2678767876787678) internal successors, (4610), 3885 states have internal predecessors, (4610), 2282 states have call successors, (2282), 627 states have call predecessors, (2282), 607 states have return successors, (2314), 2198 states have call predecessors, (2314), 2276 states have call successors, (2314) [2022-11-22 00:30:39,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6528 states to 6528 states and 9206 transitions. [2022-11-22 00:30:39,605 INFO L78 Accepts]: Start accepts. Automaton has 6528 states and 9206 transitions. Word has length 77 [2022-11-22 00:30:39,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:30:39,605 INFO L495 AbstractCegarLoop]: Abstraction has 6528 states and 9206 transitions. [2022-11-22 00:30:39,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-22 00:30:39,606 INFO L276 IsEmpty]: Start isEmpty. Operand 6528 states and 9206 transitions. [2022-11-22 00:30:39,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-22 00:30:39,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:30:39,613 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:39,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 00:30:39,614 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 00:30:39,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:30:39,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1214687636, now seen corresponding path program 1 times [2022-11-22 00:30:39,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:30:39,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911150725] [2022-11-22 00:30:39,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:30:39,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:30:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:30:40,246 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-22 00:30:40,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:30:40,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911150725] [2022-11-22 00:30:40,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911150725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:30:40,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:30:40,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:30:40,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468984679] [2022-11-22 00:30:40,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:30:40,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:30:40,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:30:40,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:30:40,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:30:40,249 INFO L87 Difference]: Start difference. First operand 6528 states and 9206 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-22 00:30:42,483 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 00:30:44,600 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 00:30:49,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:30:49,503 INFO L93 Difference]: Finished difference Result 6542 states and 9217 transitions. [2022-11-22 00:30:49,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:30:49,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 90 [2022-11-22 00:30:49,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:30:49,529 INFO L225 Difference]: With dead ends: 6542 [2022-11-22 00:30:49,529 INFO L226 Difference]: Without dead ends: 6540 [2022-11-22 00:30:49,533 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 00:30:49,534 INFO L413 NwaCegarLoop]: 3232 mSDtfsCounter, 2493 mSDsluCounter, 8518 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2499 SdHoareTripleChecker+Valid, 11750 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:30:49,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2499 Valid, 11750 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1478 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2022-11-22 00:30:49,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6540 states. [2022-11-22 00:30:49,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6540 to 6536. [2022-11-22 00:30:49,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6536 states, 3642 states have (on average 1.2674354750137287) internal successors, (4616), 3891 states have internal predecessors, (4616), 2282 states have call successors, (2282), 629 states have call predecessors, (2282), 609 states have return successors, (2314), 2198 states have call predecessors, (2314), 2276 states have call successors, (2314) [2022-11-22 00:30:49,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6536 states to 6536 states and 9212 transitions. [2022-11-22 00:30:49,999 INFO L78 Accepts]: Start accepts. Automaton has 6536 states and 9212 transitions. Word has length 90 [2022-11-22 00:30:50,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:30:50,000 INFO L495 AbstractCegarLoop]: Abstraction has 6536 states and 9212 transitions. [2022-11-22 00:30:50,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-22 00:30:50,000 INFO L276 IsEmpty]: Start isEmpty. Operand 6536 states and 9212 transitions. [2022-11-22 00:30:50,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-22 00:30:50,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:30:50,003 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:50,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 00:30:50,003 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 00:30:50,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:30:50,004 INFO L85 PathProgramCache]: Analyzing trace with hash -501857953, now seen corresponding path program 1 times [2022-11-22 00:30:50,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:30:50,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337254709] [2022-11-22 00:30:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:30:50,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:30:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:30:50,600 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-22 00:30:50,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:30:50,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337254709] [2022-11-22 00:30:50,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337254709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:30:50,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:30:50,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:30:50,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126848] [2022-11-22 00:30:50,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:30:50,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:30:50,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:30:50,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:30:50,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:30:50,602 INFO L87 Difference]: Start difference. First operand 6536 states and 9212 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 00:30:52,829 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 00:30:54,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:30:55,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:01,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:01,733 INFO L93 Difference]: Finished difference Result 6550 states and 9223 transitions. [2022-11-22 00:31:01,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:31:01,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 95 [2022-11-22 00:31:01,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:01,762 INFO L225 Difference]: With dead ends: 6550 [2022-11-22 00:31:01,762 INFO L226 Difference]: Without dead ends: 6548 [2022-11-22 00:31:01,766 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 00:31:01,767 INFO L413 NwaCegarLoop]: 3232 mSDtfsCounter, 2493 mSDsluCounter, 8518 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2498 SdHoareTripleChecker+Valid, 11750 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:01,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2498 Valid, 11750 Invalid, 1484 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1482 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2022-11-22 00:31:01,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6548 states. [2022-11-22 00:31:02,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 6544. [2022-11-22 00:31:02,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6544 states, 3648 states have (on average 1.2669956140350878) internal successors, (4622), 3897 states have internal predecessors, (4622), 2282 states have call successors, (2282), 631 states have call predecessors, (2282), 611 states have return successors, (2314), 2198 states have call predecessors, (2314), 2276 states have call successors, (2314) [2022-11-22 00:31:02,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6544 states to 6544 states and 9218 transitions. [2022-11-22 00:31:02,278 INFO L78 Accepts]: Start accepts. Automaton has 6544 states and 9218 transitions. Word has length 95 [2022-11-22 00:31:02,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:02,278 INFO L495 AbstractCegarLoop]: Abstraction has 6544 states and 9218 transitions. [2022-11-22 00:31:02,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 00:31:02,279 INFO L276 IsEmpty]: Start isEmpty. Operand 6544 states and 9218 transitions. [2022-11-22 00:31:02,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-22 00:31:02,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:02,281 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:02,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 00:31:02,282 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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 00:31:02,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:02,282 INFO L85 PathProgramCache]: Analyzing trace with hash -849836839, now seen corresponding path program 1 times [2022-11-22 00:31:02,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:02,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736201834] [2022-11-22 00:31:02,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:02,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:02,835 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-22 00:31:02,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:02,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736201834] [2022-11-22 00:31:02,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736201834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:02,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:02,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:31:02,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865659666] [2022-11-22 00:31:02,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:02,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:31:02,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:02,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:31:02,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:31:02,837 INFO L87 Difference]: Start difference. First operand 6544 states and 9218 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 00:31:05,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:07,290 WARN L539 Checker$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 00:31:10,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:10,435 INFO L93 Difference]: Finished difference Result 12922 states and 18170 transitions. [2022-11-22 00:31:10,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:31:10,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 94 [2022-11-22 00:31:10,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:10,468 INFO L225 Difference]: With dead ends: 12922 [2022-11-22 00:31:10,468 INFO L226 Difference]: Without dead ends: 6540 [2022-11-22 00:31:10,499 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 00:31:10,500 INFO L413 NwaCegarLoop]: 3170 mSDtfsCounter, 2510 mSDsluCounter, 2075 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2511 SdHoareTripleChecker+Valid, 5245 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:10,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2511 Valid, 5245 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 671 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2022-11-22 00:31:10,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6540 states. [2022-11-22 00:31:11,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6540 to 6536. [2022-11-22 00:31:11,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6536 states, 3644 states have (on average 1.2667398463227222) internal successors, (4616), 3893 states have internal predecessors, (4616), 2278 states have call successors, (2278), 631 states have call predecessors, (2278), 611 states have return successors, (2306), 2194 states have call predecessors, (2306), 2272 states have call successors, (2306) [2022-11-22 00:31:11,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6536 states to 6536 states and 9200 transitions. [2022-11-22 00:31:11,139 INFO L78 Accepts]: Start accepts. Automaton has 6536 states and 9200 transitions. Word has length 94 [2022-11-22 00:31:11,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:11,139 INFO L495 AbstractCegarLoop]: Abstraction has 6536 states and 9200 transitions. [2022-11-22 00:31:11,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 00:31:11,139 INFO L276 IsEmpty]: Start isEmpty. Operand 6536 states and 9200 transitions. [2022-11-22 00:31:11,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-22 00:31:11,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:11,142 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 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] [2022-11-22 00:31:11,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 00:31:11,142 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 00:31:11,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:11,143 INFO L85 PathProgramCache]: Analyzing trace with hash -368284235, now seen corresponding path program 1 times [2022-11-22 00:31:11,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:11,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29619471] [2022-11-22 00:31:11,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:11,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:11,790 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-22 00:31:11,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:11,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29619471] [2022-11-22 00:31:11,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29619471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:11,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:11,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:31:11,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928602804] [2022-11-22 00:31:11,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:11,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:31:11,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:11,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:31:11,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:31:11,793 INFO L87 Difference]: Start difference. First operand 6536 states and 9200 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 00:31:14,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:15,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:17,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:19,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:20,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:25,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:25,462 INFO L93 Difference]: Finished difference Result 6546 states and 9209 transitions. [2022-11-22 00:31:25,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:31:25,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 92 [2022-11-22 00:31:25,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:25,567 INFO L225 Difference]: With dead ends: 6546 [2022-11-22 00:31:25,567 INFO L226 Difference]: Without dead ends: 6544 [2022-11-22 00:31:25,570 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 00:31:25,570 INFO L413 NwaCegarLoop]: 2650 mSDtfsCounter, 2997 mSDsluCounter, 5279 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2999 SdHoareTripleChecker+Valid, 7929 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:25,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2999 Valid, 7929 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1136 Invalid, 1 Unknown, 0 Unchecked, 13.2s Time] [2022-11-22 00:31:25,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6544 states. [2022-11-22 00:31:26,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6544 to 6544. [2022-11-22 00:31:26,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6544 states, 3650 states have (on average 1.2663013698630137) internal successors, (4622), 3899 states have internal predecessors, (4622), 2278 states have call successors, (2278), 633 states have call predecessors, (2278), 613 states have return successors, (2306), 2194 states have call predecessors, (2306), 2272 states have call successors, (2306) [2022-11-22 00:31:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6544 states to 6544 states and 9206 transitions. [2022-11-22 00:31:26,084 INFO L78 Accepts]: Start accepts. Automaton has 6544 states and 9206 transitions. Word has length 92 [2022-11-22 00:31:26,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:26,085 INFO L495 AbstractCegarLoop]: Abstraction has 6544 states and 9206 transitions. [2022-11-22 00:31:26,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 00:31:26,085 INFO L276 IsEmpty]: Start isEmpty. Operand 6544 states and 9206 transitions. [2022-11-22 00:31:26,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-22 00:31:26,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:26,088 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:26,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 00:31:26,088 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 00:31:26,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:26,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1761388993, now seen corresponding path program 1 times [2022-11-22 00:31:26,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:26,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188064683] [2022-11-22 00:31:26,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:26,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-11-22 00:31:26,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:26,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188064683] [2022-11-22 00:31:26,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188064683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:26,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:26,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:31:26,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898466481] [2022-11-22 00:31:26,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:26,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:31:26,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:26,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:31:26,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:31:26,749 INFO L87 Difference]: Start difference. First operand 6544 states and 9206 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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 00:31:28,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:30,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:32,520 WARN L539 Checker$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 00:31:37,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:37,385 INFO L93 Difference]: Finished difference Result 6554 states and 9215 transitions. [2022-11-22 00:31:37,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:31:37,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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 105 [2022-11-22 00:31:37,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:37,410 INFO L225 Difference]: With dead ends: 6554 [2022-11-22 00:31:37,410 INFO L226 Difference]: Without dead ends: 6550 [2022-11-22 00:31:37,414 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 00:31:37,414 INFO L413 NwaCegarLoop]: 2650 mSDtfsCounter, 2991 mSDsluCounter, 5279 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2992 SdHoareTripleChecker+Valid, 7929 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:37,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2992 Valid, 7929 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1136 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2022-11-22 00:31:37,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6550 states. [2022-11-22 00:31:37,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6550 to 6550. [2022-11-22 00:31:37,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6550 states, 3655 states have (on average 1.2656634746922024) internal successors, (4626), 3903 states have internal predecessors, (4626), 2278 states have call successors, (2278), 635 states have call predecessors, (2278), 614 states have return successors, (2306), 2194 states have call predecessors, (2306), 2272 states have call successors, (2306) [2022-11-22 00:31:37,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6550 states to 6550 states and 9210 transitions. [2022-11-22 00:31:37,998 INFO L78 Accepts]: Start accepts. Automaton has 6550 states and 9210 transitions. Word has length 105 [2022-11-22 00:31:37,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:37,998 INFO L495 AbstractCegarLoop]: Abstraction has 6550 states and 9210 transitions. [2022-11-22 00:31:37,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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 00:31:37,999 INFO L276 IsEmpty]: Start isEmpty. Operand 6550 states and 9210 transitions. [2022-11-22 00:31:38,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-22 00:31:38,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:38,004 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 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] [2022-11-22 00:31:38,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 00:31:38,004 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:31:38,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:38,005 INFO L85 PathProgramCache]: Analyzing trace with hash 138372885, now seen corresponding path program 1 times [2022-11-22 00:31:38,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:38,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619068940] [2022-11-22 00:31:38,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:38,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:38,619 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-11-22 00:31:38,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:38,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619068940] [2022-11-22 00:31:38,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619068940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:38,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:38,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:31:38,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916252805] [2022-11-22 00:31:38,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:38,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:31:38,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:38,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:31:38,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:31:38,622 INFO L87 Difference]: Start difference. First operand 6550 states and 9210 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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 00:31:41,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:43,283 WARN L539 Checker$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 00:31:48,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:48,496 INFO L93 Difference]: Finished difference Result 9370 states and 13117 transitions. [2022-11-22 00:31:48,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:31:48,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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 102 [2022-11-22 00:31:48,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:48,532 INFO L225 Difference]: With dead ends: 9370 [2022-11-22 00:31:48,533 INFO L226 Difference]: Without dead ends: 9252 [2022-11-22 00:31:48,537 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 00:31:48,538 INFO L413 NwaCegarLoop]: 3137 mSDtfsCounter, 2735 mSDsluCounter, 7962 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 11099 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:48,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2735 Valid, 11099 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1422 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2022-11-22 00:31:48,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9252 states. [2022-11-22 00:31:49,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9252 to 9235. [2022-11-22 00:31:49,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9235 states, 5206 states have (on average 1.2606607760276605) internal successors, (6563), 5540 states have internal predecessors, (6563), 3114 states have call successors, (3114), 976 states have call predecessors, (3114), 912 states have return successors, (3299), 2951 states have call predecessors, (3299), 3104 states have call successors, (3299) [2022-11-22 00:31:49,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9235 states to 9235 states and 12976 transitions. [2022-11-22 00:31:49,335 INFO L78 Accepts]: Start accepts. Automaton has 9235 states and 12976 transitions. Word has length 102 [2022-11-22 00:31:49,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:49,336 INFO L495 AbstractCegarLoop]: Abstraction has 9235 states and 12976 transitions. [2022-11-22 00:31:49,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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 00:31:49,336 INFO L276 IsEmpty]: Start isEmpty. Operand 9235 states and 12976 transitions. [2022-11-22 00:31:49,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-22 00:31:49,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:49,339 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 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] [2022-11-22 00:31:49,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 00:31:49,340 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 00:31:49,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:49,340 INFO L85 PathProgramCache]: Analyzing trace with hash 637000168, now seen corresponding path program 1 times [2022-11-22 00:31:49,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:49,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932648245] [2022-11-22 00:31:49,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:49,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-22 00:31:50,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:50,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932648245] [2022-11-22 00:31:50,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932648245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:50,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:50,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:31:50,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17977753] [2022-11-22 00:31:50,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:50,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:31:50,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:50,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:31:50,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:31:50,724 INFO L87 Difference]: Start difference. First operand 9235 states and 12976 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 00:31:52,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:54,340 WARN L539 Checker$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 00:31:56,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:57,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:58,888 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 00:32:03,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:03,560 INFO L93 Difference]: Finished difference Result 9664 states and 13484 transitions. [2022-11-22 00:32:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:32:03,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 118 [2022-11-22 00:32:03,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:03,588 INFO L225 Difference]: With dead ends: 9664 [2022-11-22 00:32:03,588 INFO L226 Difference]: Without dead ends: 9662 [2022-11-22 00:32:03,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 00:32:03,593 INFO L413 NwaCegarLoop]: 2762 mSDtfsCounter, 2703 mSDsluCounter, 6130 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2706 SdHoareTripleChecker+Valid, 8892 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:03,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2706 Valid, 8892 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1225 Invalid, 2 Unknown, 0 Unchecked, 12.0s Time] [2022-11-22 00:32:03,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9662 states. [2022-11-22 00:32:04,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9662 to 9641. [2022-11-22 00:32:04,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9641 states, 5436 states have (on average 1.2555187637969094) internal successors, (6825), 5774 states have internal predecessors, (6825), 3211 states have call successors, (3211), 1056 states have call predecessors, (3211), 991 states have return successors, (3417), 3046 states have call predecessors, (3417), 3201 states have call successors, (3417) [2022-11-22 00:32:04,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9641 states to 9641 states and 13453 transitions. [2022-11-22 00:32:04,678 INFO L78 Accepts]: Start accepts. Automaton has 9641 states and 13453 transitions. Word has length 118 [2022-11-22 00:32:04,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:04,679 INFO L495 AbstractCegarLoop]: Abstraction has 9641 states and 13453 transitions. [2022-11-22 00:32:04,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 00:32:04,680 INFO L276 IsEmpty]: Start isEmpty. Operand 9641 states and 13453 transitions. [2022-11-22 00:32:04,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-22 00:32:04,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:04,684 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 4, 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] [2022-11-22 00:32:04,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 00:32:04,685 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_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 00:32:04,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:04,685 INFO L85 PathProgramCache]: Analyzing trace with hash -747635842, now seen corresponding path program 1 times [2022-11-22 00:32:04,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:04,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283960594] [2022-11-22 00:32:04,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:04,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-22 00:32:05,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:05,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283960594] [2022-11-22 00:32:05,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283960594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:05,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:05,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:32:05,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100675351] [2022-11-22 00:32:05,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:05,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:05,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:05,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:05,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:05,702 INFO L87 Difference]: Start difference. First operand 9641 states and 13453 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 00:32:08,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:10,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:12,158 WARN L539 Checker$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 00:32:13,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:21,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:21,317 INFO L93 Difference]: Finished difference Result 9669 states and 13478 transitions. [2022-11-22 00:32:21,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:32:21,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 146 [2022-11-22 00:32:21,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:21,348 INFO L225 Difference]: With dead ends: 9669 [2022-11-22 00:32:21,349 INFO L226 Difference]: Without dead ends: 9655 [2022-11-22 00:32:21,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 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 00:32:21,353 INFO L413 NwaCegarLoop]: 2978 mSDtfsCounter, 691 mSDsluCounter, 8341 mSDsCounter, 0 mSdLazyCounter, 1695 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 11319 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1695 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:21,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 11319 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1695 Invalid, 2 Unknown, 0 Unchecked, 14.8s Time] [2022-11-22 00:32:21,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9655 states. [2022-11-22 00:32:22,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9655 to 9645. [2022-11-22 00:32:22,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9645 states, 5441 states have (on average 1.2541812166881088) internal successors, (6824), 5778 states have internal predecessors, (6824), 3207 states have call successors, (3207), 1059 states have call predecessors, (3207), 994 states have return successors, (3414), 3043 states have call predecessors, (3414), 3198 states have call successors, (3414) [2022-11-22 00:32:22,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9645 states to 9645 states and 13445 transitions. [2022-11-22 00:32:22,133 INFO L78 Accepts]: Start accepts. Automaton has 9645 states and 13445 transitions. Word has length 146 [2022-11-22 00:32:22,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:22,133 INFO L495 AbstractCegarLoop]: Abstraction has 9645 states and 13445 transitions. [2022-11-22 00:32:22,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 00:32:22,133 INFO L276 IsEmpty]: Start isEmpty. Operand 9645 states and 13445 transitions. [2022-11-22 00:32:22,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-22 00:32:22,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:22,138 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:22,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 00:32:22,138 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 00:32:22,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:22,139 INFO L85 PathProgramCache]: Analyzing trace with hash 383872415, now seen corresponding path program 1 times [2022-11-22 00:32:22,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:22,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814585746] [2022-11-22 00:32:22,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:22,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-22 00:32:23,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:23,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814585746] [2022-11-22 00:32:23,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814585746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:23,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:23,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:32:23,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440007039] [2022-11-22 00:32:23,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:23,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:23,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:23,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:23,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:23,579 INFO L87 Difference]: Start difference. First operand 9645 states and 13445 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 00:32:26,019 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 00:32:28,211 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 00:32:33,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:33,826 INFO L93 Difference]: Finished difference Result 11687 states and 16240 transitions. [2022-11-22 00:32:33,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:32:33,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 152 [2022-11-22 00:32:33,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:33,886 INFO L225 Difference]: With dead ends: 11687 [2022-11-22 00:32:33,886 INFO L226 Difference]: Without dead ends: 11685 [2022-11-22 00:32:33,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 00:32:33,895 INFO L413 NwaCegarLoop]: 3998 mSDtfsCounter, 2461 mSDsluCounter, 10557 mSDsCounter, 0 mSdLazyCounter, 1898 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2464 SdHoareTripleChecker+Valid, 14555 SdHoareTripleChecker+Invalid, 1903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1898 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:33,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2464 Valid, 14555 Invalid, 1903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1898 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2022-11-22 00:32:33,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11685 states. [2022-11-22 00:32:35,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11685 to 11597. [2022-11-22 00:32:35,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11597 states, 6545 states have (on average 1.2508785332314745) internal successors, (8187), 6948 states have internal predecessors, (8187), 3850 states have call successors, (3850), 1281 states have call predecessors, (3850), 1199 states have return successors, (4114), 3647 states have call predecessors, (4114), 3841 states have call successors, (4114) [2022-11-22 00:32:35,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11597 states to 11597 states and 16151 transitions. [2022-11-22 00:32:35,242 INFO L78 Accepts]: Start accepts. Automaton has 11597 states and 16151 transitions. Word has length 152 [2022-11-22 00:32:35,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:35,242 INFO L495 AbstractCegarLoop]: Abstraction has 11597 states and 16151 transitions. [2022-11-22 00:32:35,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 00:32:35,243 INFO L276 IsEmpty]: Start isEmpty. Operand 11597 states and 16151 transitions. [2022-11-22 00:32:35,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-22 00:32:35,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:35,248 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:35,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 00:32:35,249 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_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 00:32:35,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:35,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1735578439, now seen corresponding path program 1 times [2022-11-22 00:32:35,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:35,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952706872] [2022-11-22 00:32:35,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:35,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:36,256 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-11-22 00:32:36,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:36,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952706872] [2022-11-22 00:32:36,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952706872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:36,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:36,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:32:36,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70741169] [2022-11-22 00:32:36,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:36,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:36,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:36,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:36,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:36,264 INFO L87 Difference]: Start difference. First operand 11597 states and 16151 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-22 00:32:38,729 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 00:32:40,944 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 00:32:47,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:47,093 INFO L93 Difference]: Finished difference Result 12943 states and 17823 transitions. [2022-11-22 00:32:47,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:32:47,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 177 [2022-11-22 00:32:47,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:47,134 INFO L225 Difference]: With dead ends: 12943 [2022-11-22 00:32:47,134 INFO L226 Difference]: Without dead ends: 12941 [2022-11-22 00:32:47,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 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 00:32:47,142 INFO L413 NwaCegarLoop]: 3324 mSDtfsCounter, 1559 mSDsluCounter, 9005 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 12329 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:47,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1562 Valid, 12329 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1710 Invalid, 2 Unknown, 0 Unchecked, 9.6s Time] [2022-11-22 00:32:47,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12941 states. [2022-11-22 00:32:48,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12941 to 12929. [2022-11-22 00:32:48,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12929 states, 7240 states have (on average 1.242403314917127) internal successors, (8995), 7677 states have internal predecessors, (8995), 4274 states have call successors, (4274), 1499 states have call predecessors, (4274), 1412 states have return successors, (4538), 4060 states have call predecessors, (4538), 4265 states have call successors, (4538) [2022-11-22 00:32:48,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12929 states to 12929 states and 17807 transitions. [2022-11-22 00:32:48,399 INFO L78 Accepts]: Start accepts. Automaton has 12929 states and 17807 transitions. Word has length 177 [2022-11-22 00:32:48,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:48,399 INFO L495 AbstractCegarLoop]: Abstraction has 12929 states and 17807 transitions. [2022-11-22 00:32:48,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-22 00:32:48,400 INFO L276 IsEmpty]: Start isEmpty. Operand 12929 states and 17807 transitions. [2022-11-22 00:32:48,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-22 00:32:48,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:48,408 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 4, 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, 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] [2022-11-22 00:32:48,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 00:32:48,409 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 00:32:48,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:48,409 INFO L85 PathProgramCache]: Analyzing trace with hash 326091484, now seen corresponding path program 1 times [2022-11-22 00:32:48,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:48,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184665868] [2022-11-22 00:32:48,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:48,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-11-22 00:32:50,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:50,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184665868] [2022-11-22 00:32:50,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184665868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:50,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:50,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:32:50,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128015187] [2022-11-22 00:32:50,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:50,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:50,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:50,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:50,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:50,246 INFO L87 Difference]: Start difference. First operand 12929 states and 17807 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-22 00:32:52,618 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 00:32:54,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:56,318 WARN L539 Checker$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 00:32:58,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:06,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:06,879 INFO L93 Difference]: Finished difference Result 21596 states and 30030 transitions. [2022-11-22 00:33:06,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:33:06,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 236 [2022-11-22 00:33:06,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:06,951 INFO L225 Difference]: With dead ends: 21596 [2022-11-22 00:33:06,952 INFO L226 Difference]: Without dead ends: 21594 [2022-11-22 00:33:06,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 00:33:06,959 INFO L413 NwaCegarLoop]: 3594 mSDtfsCounter, 2777 mSDsluCounter, 9779 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2780 SdHoareTripleChecker+Valid, 13373 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:06,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2780 Valid, 13373 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1546 Invalid, 2 Unknown, 0 Unchecked, 14.8s Time] [2022-11-22 00:33:06,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21594 states. [2022-11-22 00:33:08,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21594 to 21541. [2022-11-22 00:33:08,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21541 states, 12073 states have (on average 1.2465832850161518) internal successors, (15050), 12817 states have internal predecessors, (15050), 7160 states have call successors, (7160), 2439 states have call predecessors, (7160), 2305 states have return successors, (7762), 6819 states have call predecessors, (7762), 7151 states have call successors, (7762) [2022-11-22 00:33:09,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21541 states to 21541 states and 29972 transitions. [2022-11-22 00:33:09,044 INFO L78 Accepts]: Start accepts. Automaton has 21541 states and 29972 transitions. Word has length 236 [2022-11-22 00:33:09,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:09,044 INFO L495 AbstractCegarLoop]: Abstraction has 21541 states and 29972 transitions. [2022-11-22 00:33:09,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-22 00:33:09,045 INFO L276 IsEmpty]: Start isEmpty. Operand 21541 states and 29972 transitions. [2022-11-22 00:33:09,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-11-22 00:33:09,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:09,055 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 5, 3, 3, 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, 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] [2022-11-22 00:33:09,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-22 00:33:09,056 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_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 00:33:09,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:09,056 INFO L85 PathProgramCache]: Analyzing trace with hash 129101396, now seen corresponding path program 1 times [2022-11-22 00:33:09,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:09,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684100092] [2022-11-22 00:33:09,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:09,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:09,541 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2022-11-22 00:33:09,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:09,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684100092] [2022-11-22 00:33:09,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684100092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:09,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:09,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:33:09,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298295157] [2022-11-22 00:33:09,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:09,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:33:09,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:09,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:33:09,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:33:09,545 INFO L87 Difference]: Start difference. First operand 21541 states and 29972 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2022-11-22 00:33:11,863 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 00:33:13,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:18,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:18,525 INFO L93 Difference]: Finished difference Result 43108 states and 60397 transitions. [2022-11-22 00:33:18,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:33:18,527 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), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 255 [2022-11-22 00:33:18,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:18,613 INFO L225 Difference]: With dead ends: 43108 [2022-11-22 00:33:18,613 INFO L226 Difference]: Without dead ends: 21583 [2022-11-22 00:33:18,713 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 00:33:18,714 INFO L413 NwaCegarLoop]: 2653 mSDtfsCounter, 1 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5296 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:18,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 5296 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 747 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2022-11-22 00:33:18,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21583 states. [2022-11-22 00:33:20,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21583 to 21548. [2022-11-22 00:33:20,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21548 states, 12080 states have (on average 1.2464403973509934) internal successors, (15057), 12824 states have internal predecessors, (15057), 7160 states have call successors, (7160), 2439 states have call predecessors, (7160), 2305 states have return successors, (7762), 6819 states have call predecessors, (7762), 7151 states have call successors, (7762) [2022-11-22 00:33:20,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21548 states to 21548 states and 29979 transitions. [2022-11-22 00:33:20,556 INFO L78 Accepts]: Start accepts. Automaton has 21548 states and 29979 transitions. Word has length 255 [2022-11-22 00:33:20,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:20,557 INFO L495 AbstractCegarLoop]: Abstraction has 21548 states and 29979 transitions. [2022-11-22 00:33:20,557 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), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2022-11-22 00:33:20,558 INFO L276 IsEmpty]: Start isEmpty. Operand 21548 states and 29979 transitions. [2022-11-22 00:33:20,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-22 00:33:20,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:20,568 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:33:20,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-22 00:33:20,570 INFO L420 AbstractCegarLoop]: === Iteration 22 === 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 00:33:20,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:20,571 INFO L85 PathProgramCache]: Analyzing trace with hash 2045869004, now seen corresponding path program 1 times [2022-11-22 00:33:20,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:20,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20665418] [2022-11-22 00:33:20,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:20,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:23,026 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-22 00:33:23,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:23,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20665418] [2022-11-22 00:33:23,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20665418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:23,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:23,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 00:33:23,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631884488] [2022-11-22 00:33:23,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:23,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:33:23,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:23,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:33:23,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:33:23,029 INFO L87 Difference]: Start difference. First operand 21548 states and 29979 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (48), 4 states have call predecessors, (48), 2 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-11-22 00:33:27,443 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 00:33:29,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:31,464 WARN L539 Checker$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 00:33:33,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:35,393 WARN L539 Checker$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 00:33:43,984 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 00:33:49,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:49,716 INFO L93 Difference]: Finished difference Result 22083 states and 30709 transitions. [2022-11-22 00:33:49,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 00:33:49,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (48), 4 states have call predecessors, (48), 2 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 242 [2022-11-22 00:33:49,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:49,777 INFO L225 Difference]: With dead ends: 22083 [2022-11-22 00:33:49,777 INFO L226 Difference]: Without dead ends: 22081 [2022-11-22 00:33:49,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:33:49,785 INFO L413 NwaCegarLoop]: 1449 mSDtfsCounter, 3351 mSDsluCounter, 3574 mSDsCounter, 0 mSdLazyCounter, 9251 mSolverCounterSat, 2341 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3803 SdHoareTripleChecker+Valid, 5023 SdHoareTripleChecker+Invalid, 11595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2341 IncrementalHoareTripleChecker+Valid, 9251 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:49,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3803 Valid, 5023 Invalid, 11595 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2341 Valid, 9251 Invalid, 3 Unknown, 0 Unchecked, 24.3s Time] [2022-11-22 00:33:49,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22081 states. [2022-11-22 00:33:51,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22081 to 21754. [2022-11-22 00:33:51,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21754 states, 12186 states have (on average 1.2445429181027408) internal successors, (15166), 12934 states have internal predecessors, (15166), 7191 states have call successors, (7191), 2442 states have call predecessors, (7191), 2374 states have return successors, (7798), 6912 states have call predecessors, (7798), 7182 states have call successors, (7798) [2022-11-22 00:33:51,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21754 states to 21754 states and 30155 transitions. [2022-11-22 00:33:51,545 INFO L78 Accepts]: Start accepts. Automaton has 21754 states and 30155 transitions. Word has length 242 [2022-11-22 00:33:51,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:51,546 INFO L495 AbstractCegarLoop]: Abstraction has 21754 states and 30155 transitions. [2022-11-22 00:33:51,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (48), 4 states have call predecessors, (48), 2 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-11-22 00:33:51,546 INFO L276 IsEmpty]: Start isEmpty. Operand 21754 states and 30155 transitions. [2022-11-22 00:33:51,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-11-22 00:33:51,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:51,553 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:33:51,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-22 00:33:51,554 INFO L420 AbstractCegarLoop]: === Iteration 23 === 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 00:33:51,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:51,554 INFO L85 PathProgramCache]: Analyzing trace with hash -309643232, now seen corresponding path program 1 times [2022-11-22 00:33:51,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:51,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740116995] [2022-11-22 00:33:51,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:51,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:52,245 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2022-11-22 00:33:52,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:52,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740116995] [2022-11-22 00:33:52,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740116995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:52,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:52,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:33:52,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680050756] [2022-11-22 00:33:52,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:52,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:33:52,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:52,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:33:52,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:33:52,248 INFO L87 Difference]: Start difference. First operand 21754 states and 30155 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 4 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2022-11-22 00:33:54,686 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 00:33:57,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:59,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:06,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:06,580 INFO L93 Difference]: Finished difference Result 44015 states and 61285 transitions. [2022-11-22 00:34:06,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:34:06,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 4 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) Word has length 254 [2022-11-22 00:34:06,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:06,666 INFO L225 Difference]: With dead ends: 44015 [2022-11-22 00:34:06,666 INFO L226 Difference]: Without dead ends: 22277 [2022-11-22 00:34:06,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:34:06,731 INFO L413 NwaCegarLoop]: 3174 mSDtfsCounter, 2679 mSDsluCounter, 8417 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 77 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2684 SdHoareTripleChecker+Valid, 11591 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:06,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2684 Valid, 11591 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1508 Invalid, 1 Unknown, 0 Unchecked, 12.0s Time] [2022-11-22 00:34:06,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22277 states. [2022-11-22 00:34:08,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22277 to 21963. [2022-11-22 00:34:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21963 states, 12325 states have (on average 1.2464097363083164) internal successors, (15362), 13090 states have internal predecessors, (15362), 7259 states have call successors, (7259), 2442 states have call predecessors, (7259), 2376 states have return successors, (7889), 6983 states have call predecessors, (7889), 7250 states have call successors, (7889) [2022-11-22 00:34:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21963 states to 21963 states and 30510 transitions. [2022-11-22 00:34:08,602 INFO L78 Accepts]: Start accepts. Automaton has 21963 states and 30510 transitions. Word has length 254 [2022-11-22 00:34:08,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:08,603 INFO L495 AbstractCegarLoop]: Abstraction has 21963 states and 30510 transitions. [2022-11-22 00:34:08,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 4 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2022-11-22 00:34:08,604 INFO L276 IsEmpty]: Start isEmpty. Operand 21963 states and 30510 transitions. [2022-11-22 00:34:08,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-22 00:34:08,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:08,617 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:08,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-22 00:34:08,617 INFO L420 AbstractCegarLoop]: === Iteration 24 === 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 00:34:08,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:08,618 INFO L85 PathProgramCache]: Analyzing trace with hash 490061824, now seen corresponding path program 1 times [2022-11-22 00:34:08,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:08,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269126989] [2022-11-22 00:34:08,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:08,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:15,025 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 5 proven. 40 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-11-22 00:34:15,025 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:15,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269126989] [2022-11-22 00:34:15,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269126989] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:34:15,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421985793] [2022-11-22 00:34:15,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:15,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:34:15,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:34:15,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:34:15,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:34:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:17,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 6680 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-22 00:34:17,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:34:17,649 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-22 00:34:17,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:34:17,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421985793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:17,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:34:17,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 17 [2022-11-22 00:34:17,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491070988] [2022-11-22 00:34:17,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:17,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 00:34:17,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:17,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 00:34:17,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-11-22 00:34:17,653 INFO L87 Difference]: Start difference. First operand 21963 states and 30510 transitions. Second operand has 12 states, 8 states have (on average 15.125) internal successors, (121), 10 states have internal predecessors, (121), 5 states have call successors, (57), 2 states have call predecessors, (57), 5 states have return successors, (44), 6 states have call predecessors, (44), 5 states have call successors, (44) [2022-11-22 00:34:20,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:22,174 WARN L539 Checker$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 00:34:24,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:26,188 WARN L539 Checker$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 00:34:28,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:30,202 WARN L539 Checker$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 00:34:32,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:34,215 WARN L539 Checker$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 00:34:36,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:38,227 WARN L539 Checker$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 00:34:39,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:41,897 WARN L539 Checker$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 00:34:43,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:47,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:49,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:51,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:53,935 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 00:35:07,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:07,037 INFO L93 Difference]: Finished difference Result 45597 states and 63900 transitions. [2022-11-22 00:35:07,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 00:35:07,039 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 15.125) internal successors, (121), 10 states have internal predecessors, (121), 5 states have call successors, (57), 2 states have call predecessors, (57), 5 states have return successors, (44), 6 states have call predecessors, (44), 5 states have call successors, (44) Word has length 272 [2022-11-22 00:35:07,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:07,111 INFO L225 Difference]: With dead ends: 45597 [2022-11-22 00:35:07,112 INFO L226 Difference]: Without dead ends: 23641 [2022-11-22 00:35:07,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2022-11-22 00:35:07,161 INFO L413 NwaCegarLoop]: 2853 mSDtfsCounter, 313 mSDsluCounter, 28038 mSDsCounter, 0 mSdLazyCounter, 5102 mSolverCounterSat, 131 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 30891 SdHoareTripleChecker+Invalid, 5244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 5102 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:07,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 30891 Invalid, 5244 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [131 Valid, 5102 Invalid, 11 Unknown, 0 Unchecked, 46.7s Time] [2022-11-22 00:35:07,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23641 states. [2022-11-22 00:35:09,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23641 to 22017. [2022-11-22 00:35:09,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22017 states, 12361 states have (on average 1.245692096108729) internal successors, (15398), 13126 states have internal predecessors, (15398), 7277 states have call successors, (7277), 2442 states have call predecessors, (7277), 2376 states have return successors, (7907), 7001 states have call predecessors, (7907), 7268 states have call successors, (7907) [2022-11-22 00:35:09,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22017 states to 22017 states and 30582 transitions. [2022-11-22 00:35:09,180 INFO L78 Accepts]: Start accepts. Automaton has 22017 states and 30582 transitions. Word has length 272 [2022-11-22 00:35:09,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:09,180 INFO L495 AbstractCegarLoop]: Abstraction has 22017 states and 30582 transitions. [2022-11-22 00:35:09,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 15.125) internal successors, (121), 10 states have internal predecessors, (121), 5 states have call successors, (57), 2 states have call predecessors, (57), 5 states have return successors, (44), 6 states have call predecessors, (44), 5 states have call successors, (44) [2022-11-22 00:35:09,181 INFO L276 IsEmpty]: Start isEmpty. Operand 22017 states and 30582 transitions. [2022-11-22 00:35:09,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-11-22 00:35:09,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:09,197 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:35:09,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 00:35:09,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:35:09,412 INFO L420 AbstractCegarLoop]: === Iteration 25 === 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 00:35:09,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:09,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1910828921, now seen corresponding path program 1 times [2022-11-22 00:35:09,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:09,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628245112] [2022-11-22 00:35:09,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:09,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:10,204 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2022-11-22 00:35:10,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:10,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628245112] [2022-11-22 00:35:10,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628245112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:10,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:10,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:35:10,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655340557] [2022-11-22 00:35:10,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:10,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:35:10,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:10,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:35:10,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:35:10,208 INFO L87 Difference]: Start difference. First operand 22017 states and 30582 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2022-11-22 00:35:12,570 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 00:35:17,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:19,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:19,355 INFO L93 Difference]: Finished difference Result 43987 states and 61142 transitions. [2022-11-22 00:35:19,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:35:19,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 332 [2022-11-22 00:35:19,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:19,450 INFO L225 Difference]: With dead ends: 43987 [2022-11-22 00:35:19,450 INFO L226 Difference]: Without dead ends: 21986 [2022-11-22 00:35:19,512 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 00:35:19,513 INFO L413 NwaCegarLoop]: 2652 mSDtfsCounter, 8 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 5295 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:19,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 5295 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 748 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-11-22 00:35:19,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21986 states. [2022-11-22 00:35:21,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21986 to 21976. [2022-11-22 00:35:21,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21976 states, 12339 states have (on average 1.2454818056568604) internal successors, (15368), 13101 states have internal predecessors, (15368), 7264 states have call successors, (7264), 2434 states have call predecessors, (7264), 2370 states have return successors, (7888), 6992 states have call predecessors, (7888), 7255 states have call successors, (7888) [2022-11-22 00:35:21,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21976 states to 21976 states and 30520 transitions. [2022-11-22 00:35:21,443 INFO L78 Accepts]: Start accepts. Automaton has 21976 states and 30520 transitions. Word has length 332 [2022-11-22 00:35:21,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:21,443 INFO L495 AbstractCegarLoop]: Abstraction has 21976 states and 30520 transitions. [2022-11-22 00:35:21,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2022-11-22 00:35:21,443 INFO L276 IsEmpty]: Start isEmpty. Operand 21976 states and 30520 transitions. [2022-11-22 00:35:21,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-11-22 00:35:21,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:21,452 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 11, 11, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:35:21,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-22 00:35:21,452 INFO L420 AbstractCegarLoop]: === Iteration 26 === 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 00:35:21,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:21,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1586437986, now seen corresponding path program 1 times [2022-11-22 00:35:21,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:21,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854995910] [2022-11-22 00:35:21,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:21,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:23,005 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2022-11-22 00:35:23,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:23,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854995910] [2022-11-22 00:35:23,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854995910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:23,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:23,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 00:35:23,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161420177] [2022-11-22 00:35:23,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:23,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:35:23,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:23,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:35:23,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:35:23,009 INFO L87 Difference]: Start difference. First operand 21976 states and 30520 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (55), 4 states have call predecessors, (55), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-22 00:35:25,528 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 00:35:28,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:30,183 WARN L539 Checker$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 00:35:32,189 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 00:35:38,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:38,868 INFO L93 Difference]: Finished difference Result 22001 states and 30542 transitions. [2022-11-22 00:35:38,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:35:38,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (55), 4 states have call predecessors, (55), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 302 [2022-11-22 00:35:38,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:38,935 INFO L225 Difference]: With dead ends: 22001 [2022-11-22 00:35:38,935 INFO L226 Difference]: Without dead ends: 21853 [2022-11-22 00:35:38,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-22 00:35:38,946 INFO L413 NwaCegarLoop]: 2561 mSDtfsCounter, 3035 mSDsluCounter, 5317 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 169 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3152 SdHoareTripleChecker+Valid, 7878 SdHoareTripleChecker+Invalid, 2652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:38,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3152 Valid, 7878 Invalid, 2652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 2479 Invalid, 4 Unknown, 0 Unchecked, 13.9s Time] [2022-11-22 00:35:38,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21853 states. [2022-11-22 00:35:40,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21853 to 21798. [2022-11-22 00:35:40,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21798 states, 12237 states have (on average 1.2466290757538612) internal successors, (15255), 12995 states have internal predecessors, (15255), 7216 states have call successors, (7216), 2404 states have call predecessors, (7216), 2342 states have return successors, (7846), 6950 states have call predecessors, (7846), 7213 states have call successors, (7846) [2022-11-22 00:35:40,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21798 states to 21798 states and 30317 transitions. [2022-11-22 00:35:40,879 INFO L78 Accepts]: Start accepts. Automaton has 21798 states and 30317 transitions. Word has length 302 [2022-11-22 00:35:40,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:40,880 INFO L495 AbstractCegarLoop]: Abstraction has 21798 states and 30317 transitions. [2022-11-22 00:35:40,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (55), 4 states have call predecessors, (55), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-22 00:35:40,880 INFO L276 IsEmpty]: Start isEmpty. Operand 21798 states and 30317 transitions. [2022-11-22 00:35:40,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-22 00:35:40,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:40,896 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 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 00:35:40,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-22 00:35:40,896 INFO L420 AbstractCegarLoop]: === Iteration 27 === 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 00:35:40,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:40,897 INFO L85 PathProgramCache]: Analyzing trace with hash -343253627, now seen corresponding path program 1 times [2022-11-22 00:35:40,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:40,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462163175] [2022-11-22 00:35:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:40,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2022-11-22 00:35:41,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:41,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462163175] [2022-11-22 00:35:41,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462163175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:41,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:41,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 00:35:41,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528188032] [2022-11-22 00:35:41,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:41,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:35:41,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:41,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:35:41,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:35:41,691 INFO L87 Difference]: Start difference. First operand 21798 states and 30317 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (46), 3 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-22 00:35:43,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:45,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:47,930 WARN L539 Checker$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 00:35:49,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:51,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:52,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:55,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:03,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:03,002 INFO L93 Difference]: Finished difference Result 44552 states and 62341 transitions. [2022-11-22 00:36:03,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:36:03,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (46), 3 states have call predecessors, (46), 2 states have call successors, (46) Word has length 315 [2022-11-22 00:36:03,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:03,084 INFO L225 Difference]: With dead ends: 44552 [2022-11-22 00:36:03,084 INFO L226 Difference]: Without dead ends: 22770 [2022-11-22 00:36:03,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:36:03,214 INFO L413 NwaCegarLoop]: 2852 mSDtfsCounter, 393 mSDsluCounter, 10952 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 13804 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:03,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 13804 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1958 Invalid, 3 Unknown, 0 Unchecked, 18.8s Time] [2022-11-22 00:36:03,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22770 states. [2022-11-22 00:36:04,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22770 to 21386. [2022-11-22 00:36:04,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21386 states, 11983 states have (on average 1.245597930401402) internal successors, (14926), 12716 states have internal predecessors, (14926), 7075 states have call successors, (7075), 2386 states have call predecessors, (7075), 2325 states have return successors, (7666), 6816 states have call predecessors, (7666), 7072 states have call successors, (7666) [2022-11-22 00:36:05,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21386 states to 21386 states and 29667 transitions. [2022-11-22 00:36:05,016 INFO L78 Accepts]: Start accepts. Automaton has 21386 states and 29667 transitions. Word has length 315 [2022-11-22 00:36:05,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:05,017 INFO L495 AbstractCegarLoop]: Abstraction has 21386 states and 29667 transitions. [2022-11-22 00:36:05,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (46), 3 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-22 00:36:05,017 INFO L276 IsEmpty]: Start isEmpty. Operand 21386 states and 29667 transitions. [2022-11-22 00:36:05,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-22 00:36:05,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:05,025 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:36:05,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-22 00:36:05,026 INFO L420 AbstractCegarLoop]: === Iteration 28 === 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 00:36:05,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:05,026 INFO L85 PathProgramCache]: Analyzing trace with hash 270404676, now seen corresponding path program 1 times [2022-11-22 00:36:05,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:05,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822383933] [2022-11-22 00:36:05,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:05,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:08,072 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2022-11-22 00:36:08,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:08,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822383933] [2022-11-22 00:36:08,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822383933] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:36:08,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773201740] [2022-11-22 00:36:08,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:08,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:36:08,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:36:08,075 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:36:08,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 00:36:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:10,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 7004 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 00:36:10,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:36:10,476 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-22 00:36:10,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:36:10,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773201740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:36:10,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:36:10,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 15 [2022-11-22 00:36:10,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132139084] [2022-11-22 00:36:10,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:36:10,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 00:36:10,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:10,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 00:36:10,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-11-22 00:36:10,479 INFO L87 Difference]: Start difference. First operand 21386 states and 29667 transitions. Second operand has 9 states, 6 states have (on average 25.5) internal successors, (153), 9 states have internal predecessors, (153), 5 states have call successors, (69), 2 states have call predecessors, (69), 5 states have return successors, (56), 5 states have call predecessors, (56), 5 states have call successors, (56) [2022-11-22 00:36:13,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:16,358 WARN L539 Checker$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 00:36:18,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:20,146 WARN L539 Checker$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 00:36:21,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:23,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:25,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:26,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:35,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:35,875 INFO L93 Difference]: Finished difference Result 34628 states and 48106 transitions. [2022-11-22 00:36:35,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 00:36:35,876 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 25.5) internal successors, (153), 9 states have internal predecessors, (153), 5 states have call successors, (69), 2 states have call predecessors, (69), 5 states have return successors, (56), 5 states have call predecessors, (56), 5 states have call successors, (56) Word has length 338 [2022-11-22 00:36:35,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:35,941 INFO L225 Difference]: With dead ends: 34628 [2022-11-22 00:36:35,941 INFO L226 Difference]: Without dead ends: 21519 [2022-11-22 00:36:35,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-11-22 00:36:35,978 INFO L413 NwaCegarLoop]: 2625 mSDtfsCounter, 17 mSDsluCounter, 18259 mSDsCounter, 0 mSdLazyCounter, 3358 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 20884 SdHoareTripleChecker+Invalid, 3362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3358 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:35,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 20884 Invalid, 3362 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 3358 Invalid, 3 Unknown, 0 Unchecked, 23.3s Time] [2022-11-22 00:36:35,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21519 states. [2022-11-22 00:36:37,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21519 to 21458. [2022-11-22 00:36:37,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21458 states, 12028 states have (on average 1.2449285001662787) internal successors, (14974), 12752 states have internal predecessors, (14974), 7102 states have call successors, (7102), 2386 states have call predecessors, (7102), 2325 states have return successors, (7693), 6843 states have call predecessors, (7693), 7099 states have call successors, (7693) [2022-11-22 00:36:37,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21458 states to 21458 states and 29769 transitions. [2022-11-22 00:36:37,810 INFO L78 Accepts]: Start accepts. Automaton has 21458 states and 29769 transitions. Word has length 338 [2022-11-22 00:36:37,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:37,810 INFO L495 AbstractCegarLoop]: Abstraction has 21458 states and 29769 transitions. [2022-11-22 00:36:37,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 25.5) internal successors, (153), 9 states have internal predecessors, (153), 5 states have call successors, (69), 2 states have call predecessors, (69), 5 states have return successors, (56), 5 states have call predecessors, (56), 5 states have call successors, (56) [2022-11-22 00:36:37,810 INFO L276 IsEmpty]: Start isEmpty. Operand 21458 states and 29769 transitions. [2022-11-22 00:36:37,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-11-22 00:36:37,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:37,818 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:36:37,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 00:36:38,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-22 00:36:38,019 INFO L420 AbstractCegarLoop]: === Iteration 29 === 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 00:36:38,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:38,019 INFO L85 PathProgramCache]: Analyzing trace with hash 187020653, now seen corresponding path program 1 times [2022-11-22 00:36:38,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:38,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982193951] [2022-11-22 00:36:38,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:38,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:39,098 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2022-11-22 00:36:39,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:39,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982193951] [2022-11-22 00:36:39,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982193951] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:36:39,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038646291] [2022-11-22 00:36:39,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:39,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:36:39,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:36:39,100 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:36:39,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a8f714-49a7-4bad-ad9d-650d2fa4136a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 00:36:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:41,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 6934 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 00:36:41,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:36:41,761 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 168 proven. 39 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-22 00:36:41,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:36:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2022-11-22 00:36:42,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038646291] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:36:42,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1909298808] [2022-11-22 00:36:42,260 INFO L159 IcfgInterpreter]: Started Sifa with 232 locations of interest [2022-11-22 00:36:42,260 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:36:42,265 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:36:42,270 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:36:42,270 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:38:42,836 WARN L233 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 7033 DAG size of output: 6836 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-22 00:38:58,588 WARN L233 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 7033 DAG size of output: 6836 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)