./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c077afd9-ef65-47d5-ba85-544a18bfd571/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c077afd9-ef65-47d5-ba85-544a18bfd571/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c077afd9-ef65-47d5-ba85-544a18bfd571/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c077afd9-ef65-47d5-ba85-544a18bfd571/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c077afd9-ef65-47d5-ba85-544a18bfd571/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c077afd9-ef65-47d5-ba85-544a18bfd571/bin/utaipan-I9t0OCRTmS --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 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 --- 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-8393723 [2022-11-19 08:22:23,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:22:23,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:22:23,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:22:23,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:22:23,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:22:23,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:22:23,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:22:23,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:22:23,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:22:23,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:22:23,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:22:23,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:22:23,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:22:23,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:22:23,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:22:23,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:22:23,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:22:23,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:22:23,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:22:23,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:22:23,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:22:23,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:22:23,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:22:23,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:22:23,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:22:23,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:22:23,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:22:23,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:22:23,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:22:23,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:22:23,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:22:23,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:22:23,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:22:23,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:22:23,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:22:23,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:22:23,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:22:23,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:22:23,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:22:23,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:22:23,875 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c077afd9-ef65-47d5-ba85-544a18bfd571/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:22:23,927 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:22:23,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:22:23,929 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:22:23,929 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:22:23,930 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:22:23,931 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:22:23,931 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:22:23,931 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:22:23,931 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:22:23,932 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:22:23,933 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:22:23,933 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:22:23,934 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:22:23,934 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:22:23,934 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:22:23,934 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:22:23,935 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:22:23,935 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:22:23,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:22:23,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:22:23,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:22:23,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:22:23,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:22:23,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:22:23,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:22:23,939 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:22:23,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:22:23,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:22:23,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:22:23,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:22:23,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:22:23,941 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:22:23,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:22:23,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:22:23,942 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:22:23,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:22:23,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:22:23,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:22:23,943 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_c077afd9-ef65-47d5-ba85-544a18bfd571/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c077afd9-ef65-47d5-ba85-544a18bfd571/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 [2022-11-19 08:22:24,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:22:24,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:22:24,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:22:24,368 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:22:24,369 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:22:24,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c077afd9-ef65-47d5-ba85-544a18bfd571/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2022-11-19 08:22:24,444 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c077afd9-ef65-47d5-ba85-544a18bfd571/bin/utaipan-I9t0OCRTmS/data/253104f39/68f206b72a9a472fa0b9447cb12745c1/FLAGfe5e7901c [2022-11-19 08:22:25,560 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:22:25,561 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c077afd9-ef65-47d5-ba85-544a18bfd571/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2022-11-19 08:22:25,625 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c077afd9-ef65-47d5-ba85-544a18bfd571/bin/utaipan-I9t0OCRTmS/data/253104f39/68f206b72a9a472fa0b9447cb12745c1/FLAGfe5e7901c [2022-11-19 08:22:25,840 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c077afd9-ef65-47d5-ba85-544a18bfd571/bin/utaipan-I9t0OCRTmS/data/253104f39/68f206b72a9a472fa0b9447cb12745c1 [2022-11-19 08:22:25,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:22:25,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:22:25,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:22:25,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:22:25,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:22:25,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:22:25" (1/1) ... [2022-11-19 08:22:25,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191d8b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:22:25, skipping insertion in model container [2022-11-19 08:22:25,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:22:25" (1/1) ... [2022-11-19 08:22:25,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:22:26,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:22:29,736 WARN L234 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_c077afd9-ef65-47d5-ba85-544a18bfd571/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2022-11-19 08:22:29,740 WARN L234 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_c077afd9-ef65-47d5-ba85-544a18bfd571/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2022-11-19 08:22:29,741 WARN L234 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_c077afd9-ef65-47d5-ba85-544a18bfd571/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2022-11-19 08:22:29,742 WARN L234 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_c077afd9-ef65-47d5-ba85-544a18bfd571/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2022-11-19 08:22:29,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:22:29,830 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:22:30,302 WARN L234 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_c077afd9-ef65-47d5-ba85-544a18bfd571/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2022-11-19 08:22:30,303 WARN L234 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_c077afd9-ef65-47d5-ba85-544a18bfd571/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2022-11-19 08:22:30,303 WARN L234 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_c077afd9-ef65-47d5-ba85-544a18bfd571/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2022-11-19 08:22:30,304 WARN L234 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_c077afd9-ef65-47d5-ba85-544a18bfd571/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2022-11-19 08:22:30,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:22:30,579 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:22:30,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:22:30 WrapperNode [2022-11-19 08:22:30,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:22:30,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:22:30,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:22:30,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:22:30,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:22:30" (1/1) ... [2022-11-19 08:22:30,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:22:30" (1/1) ... [2022-11-19 08:22:30,991 INFO L138 Inliner]: procedures = 407, calls = 2608, calls flagged for inlining = 197, calls inlined = 171, statements flattened = 5074 [2022-11-19 08:22:30,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:22:30,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:22:30,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:22:30,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:22:31,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:22:30" (1/1) ... [2022-11-19 08:22:31,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:22:30" (1/1) ... [2022-11-19 08:22:31,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:22:30" (1/1) ... [2022-11-19 08:22:31,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:22:30" (1/1) ... [2022-11-19 08:22:31,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:22:30" (1/1) ... [2022-11-19 08:22:31,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:22:30" (1/1) ... [2022-11-19 08:22:31,267 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:22:30" (1/1) ... [2022-11-19 08:22:31,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:22:30" (1/1) ... [2022-11-19 08:22:31,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:22:31,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:22:31,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:22:31,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:22:31,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:22:30" (1/1) ... [2022-11-19 08:22:31,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:22:31,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c077afd9-ef65-47d5-ba85-544a18bfd571/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:22:31,359 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c077afd9-ef65-47d5-ba85-544a18bfd571/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:22:31,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c077afd9-ef65-47d5-ba85-544a18bfd571/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:22:31,425 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-11-19 08:22:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-11-19 08:22:31,426 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_detach [2022-11-19 08:22:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_detach [2022-11-19 08:22:31,426 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-11-19 08:22:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-11-19 08:22:31,426 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 08:22:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 08:22:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure mhz_3288_power [2022-11-19 08:22:31,427 INFO L138 BoogieDeclarations]: Found implementation of procedure mhz_3288_power [2022-11-19 08:22:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:22:31,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:22:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_request_io [2022-11-19 08:22:31,428 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_request_io [2022-11-19 08:22:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_70 [2022-11-19 08:22:31,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_70 [2022-11-19 08:22:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 08:22:31,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 08:22:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 08:22:31,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 08:22:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 08:22:31,429 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 08:22:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_resume [2022-11-19 08:22:31,430 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_resume [2022-11-19 08:22:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 08:22:31,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 08:22:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:22:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_suspend [2022-11-19 08:22:31,431 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_suspend [2022-11-19 08:22:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 08:22:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 08:22:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-19 08:22:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-19 08:22:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 08:22:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 08:22:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:22:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-19 08:22:31,433 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-19 08:22:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-19 08:22:31,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-19 08:22:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 08:22:31,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 08:22:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure cvt_ascii_address [2022-11-19 08:22:31,435 INFO L138 BoogieDeclarations]: Found implementation of procedure cvt_ascii_address [2022-11-19 08:22:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 08:22:31,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 08:22:31,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:22:31,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-19 08:22:31,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-19 08:22:31,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 08:22:31,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 08:22:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_smc91c92_cs_driver_exit_13_2 [2022-11-19 08:22:31,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_smc91c92_cs_driver_exit_13_2 [2022-11-19 08:22:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:22:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 08:22:31,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 08:22:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 08:22:31,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 08:22:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:22:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-19 08:22:31,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-19 08:22:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure smc_tx_timeout [2022-11-19 08:22:31,439 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_tx_timeout [2022-11-19 08:22:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-19 08:22:31,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-19 08:22:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure smc_reset [2022-11-19 08:22:31,440 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_reset [2022-11-19 08:22:31,440 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-11-19 08:22:31,440 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-11-19 08:22:31,440 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-19 08:22:31,440 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-19 08:22:31,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:22:31,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:22:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:22:31,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:22:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure smc_hardware_send_packet [2022-11-19 08:22:31,442 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_hardware_send_packet [2022-11-19 08:22:31,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 08:22:31,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 08:22:31,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-19 08:22:31,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-19 08:22:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_smc_private [2022-11-19 08:22:31,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_smc_private [2022-11-19 08:22:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure osi_load_firmware [2022-11-19 08:22:31,444 INFO L138 BoogieDeclarations]: Found implementation of procedure osi_load_firmware [2022-11-19 08:22:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 08:22:31,445 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 08:22:31,445 INFO L130 BoogieDeclarations]: Found specification of procedure smc_set_xcvr [2022-11-19 08:22:31,446 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_set_xcvr [2022-11-19 08:22:31,446 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-19 08:22:31,446 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-19 08:22:31,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:22:31,446 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 08:22:31,446 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 08:22:31,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:22:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-19 08:22:31,447 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-19 08:22:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure mot_config [2022-11-19 08:22:31,448 INFO L138 BoogieDeclarations]: Found implementation of procedure mot_config [2022-11-19 08:22:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:22:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure check_sig [2022-11-19 08:22:31,448 INFO L138 BoogieDeclarations]: Found implementation of procedure check_sig [2022-11-19 08:22:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-19 08:22:31,449 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-19 08:22:31,450 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 08:22:31,453 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 08:22:31,453 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-19 08:22:31,453 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-19 08:22:31,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 08:22:31,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 08:22:31,455 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-19 08:22:31,456 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-19 08:22:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2022-11-19 08:22:31,457 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2022-11-19 08:22:31,462 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-19 08:22:31,462 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-19 08:22:31,462 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 08:22:31,462 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 08:22:31,462 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 08:22:31,462 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 08:22:31,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:22:31,463 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_loop_tuple [2022-11-19 08:22:31,463 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_loop_tuple [2022-11-19 08:22:31,463 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_release [2022-11-19 08:22:31,463 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_release [2022-11-19 08:22:31,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:22:31,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:22:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_smc_private [2022-11-19 08:22:31,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_smc_private [2022-11-19 08:22:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_loop_config [2022-11-19 08:22:31,464 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_loop_config [2022-11-19 08:22:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 08:22:31,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 08:22:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure smc_interrupt [2022-11-19 08:22:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_interrupt [2022-11-19 08:22:31,465 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-19 08:22:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-19 08:22:31,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:22:31,465 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-19 08:22:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-19 08:22:31,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 08:22:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 08:22:31,466 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-19 08:22:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-19 08:22:31,466 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-19 08:22:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-19 08:22:32,458 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:22:32,464 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:22:32,847 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:22:38,793 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 08:22:39,028 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:22:40,315 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:22:40,315 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 08:22:40,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:22:40 BoogieIcfgContainer [2022-11-19 08:22:40,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:22:40,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:22:40,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:22:40,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:22:40,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:22:25" (1/3) ... [2022-11-19 08:22:40,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4d8e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:22:40, skipping insertion in model container [2022-11-19 08:22:40,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:22:30" (2/3) ... [2022-11-19 08:22:40,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4d8e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:22:40, skipping insertion in model container [2022-11-19 08:22:40,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:22:40" (3/3) ... [2022-11-19 08:22:40,344 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2022-11-19 08:22:40,371 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:22:40,371 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-19 08:22:40,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:22:40,489 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;@33848ab5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:22:40,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-19 08:22:40,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 1226 states, 693 states have (on average 1.2972582972582973) internal successors, (899), 714 states have internal predecessors, (899), 464 states have call successors, (464), 67 states have call predecessors, (464), 66 states have return successors, (458), 456 states have call predecessors, (458), 458 states have call successors, (458) [2022-11-19 08:22:40,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-19 08:22:40,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:22:40,523 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:22:40,527 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)] === [2022-11-19 08:22:40,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:22:40,534 INFO L85 PathProgramCache]: Analyzing trace with hash -2066109418, now seen corresponding path program 1 times [2022-11-19 08:22:40,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:22:40,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773773731] [2022-11-19 08:22:40,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:22:40,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:22:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:22:41,750 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-19 08:22:41,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:22:41,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773773731] [2022-11-19 08:22:41,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773773731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:22:41,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:22:41,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:22:41,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861914496] [2022-11-19 08:22:41,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:22:41,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:22:41,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:22:41,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:22:41,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:22:41,827 INFO L87 Difference]: Start difference. First operand has 1226 states, 693 states have (on average 1.2972582972582973) internal successors, (899), 714 states have internal predecessors, (899), 464 states have call successors, (464), 67 states have call predecessors, (464), 66 states have return successors, (458), 456 states have call predecessors, (458), 458 states have call successors, (458) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 08:22:44,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:22:44,852 INFO L93 Difference]: Finished difference Result 3554 states and 5367 transitions. [2022-11-19 08:22:44,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:22:44,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 141 [2022-11-19 08:22:44,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:22:44,893 INFO L225 Difference]: With dead ends: 3554 [2022-11-19 08:22:44,893 INFO L226 Difference]: Without dead ends: 2343 [2022-11-19 08:22:44,909 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 [2022-11-19 08:22:44,915 INFO L413 NwaCegarLoop]: 1999 mSDtfsCounter, 1695 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 3544 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:22:44,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1695 Valid, 3544 Invalid, 495 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-19 08:22:44,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2022-11-19 08:22:45,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 2339. [2022-11-19 08:22:45,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2339 states, 1336 states have (on average 1.2911676646706587) internal successors, (1725), 1377 states have internal predecessors, (1725), 872 states have call successors, (872), 129 states have call predecessors, (872), 128 states have return successors, (868), 864 states have call predecessors, (868), 868 states have call successors, (868) [2022-11-19 08:22:45,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2339 states to 2339 states and 3465 transitions. [2022-11-19 08:22:45,311 INFO L78 Accepts]: Start accepts. Automaton has 2339 states and 3465 transitions. Word has length 141 [2022-11-19 08:22:45,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:22:45,315 INFO L495 AbstractCegarLoop]: Abstraction has 2339 states and 3465 transitions. [2022-11-19 08:22:45,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 08:22:45,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2339 states and 3465 transitions. [2022-11-19 08:22:45,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-19 08:22:45,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:22:45,334 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:22:45,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:22:45,335 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:22:45,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:22:45,335 INFO L85 PathProgramCache]: Analyzing trace with hash -256815061, now seen corresponding path program 1 times [2022-11-19 08:22:45,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:22:45,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288555703] [2022-11-19 08:22:45,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:22:45,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:22:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:22:45,891 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-19 08:22:45,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:22:45,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288555703] [2022-11-19 08:22:45,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288555703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:22:45,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:22:45,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:22:45,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212331700] [2022-11-19 08:22:45,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:22:45,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:22:45,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:22:45,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:22:45,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:22:45,896 INFO L87 Difference]: Start difference. First operand 2339 states and 3465 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 08:22:49,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:22:49,353 INFO L93 Difference]: Finished difference Result 6545 states and 9657 transitions. [2022-11-19 08:22:49,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:22:49,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2022-11-19 08:22:49,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:22:49,393 INFO L225 Difference]: With dead ends: 6545 [2022-11-19 08:22:49,393 INFO L226 Difference]: Without dead ends: 4231 [2022-11-19 08:22:49,410 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 [2022-11-19 08:22:49,412 INFO L413 NwaCegarLoop]: 1929 mSDtfsCounter, 1424 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 3451 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:22:49,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1424 Valid, 3451 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-19 08:22:49,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2022-11-19 08:22:49,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 4202. [2022-11-19 08:22:49,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4202 states, 2401 states have (on average 1.2811328613077884) internal successors, (3076), 2481 states have internal predecessors, (3076), 1555 states have call successors, (1555), 248 states have call predecessors, (1555), 243 states have return successors, (1551), 1532 states have call predecessors, (1551), 1551 states have call successors, (1551) [2022-11-19 08:22:49,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4202 states to 4202 states and 6182 transitions. [2022-11-19 08:22:49,828 INFO L78 Accepts]: Start accepts. Automaton has 4202 states and 6182 transitions. Word has length 149 [2022-11-19 08:22:49,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:22:49,828 INFO L495 AbstractCegarLoop]: Abstraction has 4202 states and 6182 transitions. [2022-11-19 08:22:49,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 08:22:49,829 INFO L276 IsEmpty]: Start isEmpty. Operand 4202 states and 6182 transitions. [2022-11-19 08:22:49,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-19 08:22:49,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:22:49,833 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:22:49,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:22:49,833 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:22:49,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:22:49,834 INFO L85 PathProgramCache]: Analyzing trace with hash 201539906, now seen corresponding path program 1 times [2022-11-19 08:22:49,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:22:49,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530223688] [2022-11-19 08:22:49,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:22:49,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:22:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:22:50,434 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-19 08:22:50,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:22:50,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530223688] [2022-11-19 08:22:50,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530223688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:22:50,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:22:50,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:22:50,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518361811] [2022-11-19 08:22:50,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:22:50,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:22:50,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:22:50,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:22:50,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:22:50,440 INFO L87 Difference]: Start difference. First operand 4202 states and 6182 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 08:22:52,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:22:52,473 INFO L93 Difference]: Finished difference Result 8345 states and 12266 transitions. [2022-11-19 08:22:52,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:22:52,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 158 [2022-11-19 08:22:52,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:22:52,505 INFO L225 Difference]: With dead ends: 8345 [2022-11-19 08:22:52,506 INFO L226 Difference]: Without dead ends: 4168 [2022-11-19 08:22:52,528 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 [2022-11-19 08:22:52,529 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1731 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:22:52,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1731 Valid, 1606 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-19 08:22:52,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4168 states. [2022-11-19 08:22:53,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4168 to 4168. [2022-11-19 08:22:53,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4168 states, 2387 states have (on average 1.278173439463762) internal successors, (3051), 2467 states have internal predecessors, (3051), 1531 states have call successors, (1531), 252 states have call predecessors, (1531), 247 states have return successors, (1527), 1508 states have call predecessors, (1527), 1527 states have call successors, (1527) [2022-11-19 08:22:53,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4168 states to 4168 states and 6109 transitions. [2022-11-19 08:22:53,063 INFO L78 Accepts]: Start accepts. Automaton has 4168 states and 6109 transitions. Word has length 158 [2022-11-19 08:22:53,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:22:53,064 INFO L495 AbstractCegarLoop]: Abstraction has 4168 states and 6109 transitions. [2022-11-19 08:22:53,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 08:22:53,065 INFO L276 IsEmpty]: Start isEmpty. Operand 4168 states and 6109 transitions. [2022-11-19 08:22:53,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-19 08:22:53,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:22:53,069 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:22:53,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:22:53,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:22:53,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:22:53,071 INFO L85 PathProgramCache]: Analyzing trace with hash -790582313, now seen corresponding path program 1 times [2022-11-19 08:22:53,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:22:53,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870289494] [2022-11-19 08:22:53,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:22:53,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:22:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:22:53,542 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-19 08:22:53,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:22:53,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870289494] [2022-11-19 08:22:53,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870289494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:22:53,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:22:53,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:22:53,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066440970] [2022-11-19 08:22:53,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:22:53,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:22:53,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:22:53,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:22:53,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:22:53,547 INFO L87 Difference]: Start difference. First operand 4168 states and 6109 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 08:22:55,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:22:55,332 INFO L93 Difference]: Finished difference Result 7535 states and 11000 transitions. [2022-11-19 08:22:55,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:22:55,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 159 [2022-11-19 08:22:55,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:22:55,356 INFO L225 Difference]: With dead ends: 7535 [2022-11-19 08:22:55,357 INFO L226 Difference]: Without dead ends: 3410 [2022-11-19 08:22:55,377 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 [2022-11-19 08:22:55,382 INFO L413 NwaCegarLoop]: 1321 mSDtfsCounter, 1466 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:22:55,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1372 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-19 08:22:55,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3410 states. [2022-11-19 08:22:55,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3410 to 3410. [2022-11-19 08:22:55,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3410 states, 1991 states have (on average 1.2903063787041689) internal successors, (2569), 2049 states have internal predecessors, (2569), 1185 states have call successors, (1185), 236 states have call predecessors, (1185), 231 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-11-19 08:22:55,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3410 states to 3410 states and 4935 transitions. [2022-11-19 08:22:55,795 INFO L78 Accepts]: Start accepts. Automaton has 3410 states and 4935 transitions. Word has length 159 [2022-11-19 08:22:55,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:22:55,797 INFO L495 AbstractCegarLoop]: Abstraction has 3410 states and 4935 transitions. [2022-11-19 08:22:55,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 08:22:55,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3410 states and 4935 transitions. [2022-11-19 08:22:55,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-19 08:22:55,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:22:55,807 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:22:55,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:22:55,808 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)] === [2022-11-19 08:22:55,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:22:55,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1321812432, now seen corresponding path program 1 times [2022-11-19 08:22:55,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:22:55,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243232538] [2022-11-19 08:22:55,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:22:55,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:22:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:22:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2022-11-19 08:22:56,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:22:56,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243232538] [2022-11-19 08:22:56,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243232538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:22:56,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:22:56,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:22:56,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12747149] [2022-11-19 08:22:56,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:22:56,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:22:56,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:22:56,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:22:56,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:22:56,760 INFO L87 Difference]: Start difference. First operand 3410 states and 4935 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 08:22:59,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:22:59,524 INFO L93 Difference]: Finished difference Result 3416 states and 4940 transitions. [2022-11-19 08:22:59,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:22:59,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 183 [2022-11-19 08:22:59,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:22:59,551 INFO L225 Difference]: With dead ends: 3416 [2022-11-19 08:22:59,552 INFO L226 Difference]: Without dead ends: 3414 [2022-11-19 08:22:59,554 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 [2022-11-19 08:22:59,555 INFO L413 NwaCegarLoop]: 1304 mSDtfsCounter, 1456 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:22:59,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 3899 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-19 08:22:59,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2022-11-19 08:22:59,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 3414. [2022-11-19 08:22:59,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3414 states, 1994 states have (on average 1.2898696088264794) internal successors, (2572), 2052 states have internal predecessors, (2572), 1185 states have call successors, (1185), 237 states have call predecessors, (1185), 232 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-11-19 08:23:00,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3414 states to 3414 states and 4938 transitions. [2022-11-19 08:23:00,015 INFO L78 Accepts]: Start accepts. Automaton has 3414 states and 4938 transitions. Word has length 183 [2022-11-19 08:23:00,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:23:00,019 INFO L495 AbstractCegarLoop]: Abstraction has 3414 states and 4938 transitions. [2022-11-19 08:23:00,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 08:23:00,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3414 states and 4938 transitions. [2022-11-19 08:23:00,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-19 08:23:00,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:23:00,026 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:23:00,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:23:00,029 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)] === [2022-11-19 08:23:00,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:23:00,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1527868905, now seen corresponding path program 1 times [2022-11-19 08:23:00,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:23:00,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762688362] [2022-11-19 08:23:00,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:00,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:23:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:00,926 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2022-11-19 08:23:00,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:23:00,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762688362] [2022-11-19 08:23:00,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762688362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:23:00,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:23:00,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:23:00,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775929315] [2022-11-19 08:23:00,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:23:00,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:23:00,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:23:00,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:23:00,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:23:00,929 INFO L87 Difference]: Start difference. First operand 3414 states and 4938 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-19 08:23:02,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:23:04,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:23:04,919 INFO L93 Difference]: Finished difference Result 3420 states and 4943 transitions. [2022-11-19 08:23:04,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:23:04,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 191 [2022-11-19 08:23:04,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:23:04,940 INFO L225 Difference]: With dead ends: 3420 [2022-11-19 08:23:04,940 INFO L226 Difference]: Without dead ends: 3418 [2022-11-19 08:23:04,942 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 [2022-11-19 08:23:04,943 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1450 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:23:04,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1460 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-19 08:23:04,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3418 states. [2022-11-19 08:23:05,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3418 to 3418. [2022-11-19 08:23:05,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 1997 states have (on average 1.2894341512268404) internal successors, (2575), 2055 states have internal predecessors, (2575), 1185 states have call successors, (1185), 238 states have call predecessors, (1185), 233 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-11-19 08:23:05,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 4941 transitions. [2022-11-19 08:23:05,279 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 4941 transitions. Word has length 191 [2022-11-19 08:23:05,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:23:05,283 INFO L495 AbstractCegarLoop]: Abstraction has 3418 states and 4941 transitions. [2022-11-19 08:23:05,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-19 08:23:05,284 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 4941 transitions. [2022-11-19 08:23:05,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-19 08:23:05,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:23:05,289 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:23:05,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:23:05,290 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)] === [2022-11-19 08:23:05,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:23:05,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1367346288, now seen corresponding path program 1 times [2022-11-19 08:23:05,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:23:05,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561337055] [2022-11-19 08:23:05,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:05,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:23:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:06,121 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2022-11-19 08:23:06,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:23:06,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561337055] [2022-11-19 08:23:06,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561337055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:23:06,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:23:06,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:23:06,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031942592] [2022-11-19 08:23:06,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:23:06,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:23:06,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:23:06,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:23:06,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:23:06,125 INFO L87 Difference]: Start difference. First operand 3418 states and 4941 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-19 08:23:08,846 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 [] [2022-11-19 08:23:10,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:23:10,005 INFO L93 Difference]: Finished difference Result 3424 states and 4946 transitions. [2022-11-19 08:23:10,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:23:10,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 193 [2022-11-19 08:23:10,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:23:10,026 INFO L225 Difference]: With dead ends: 3424 [2022-11-19 08:23:10,027 INFO L226 Difference]: Without dead ends: 3422 [2022-11-19 08:23:10,030 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 [2022-11-19 08:23:10,031 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1451 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:23:10,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1460 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-19 08:23:10,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3422 states. [2022-11-19 08:23:10,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3422 to 3422. [2022-11-19 08:23:10,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3422 states, 2000 states have (on average 1.289) internal successors, (2578), 2058 states have internal predecessors, (2578), 1185 states have call successors, (1185), 239 states have call predecessors, (1185), 234 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-11-19 08:23:10,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3422 states to 3422 states and 4944 transitions. [2022-11-19 08:23:10,389 INFO L78 Accepts]: Start accepts. Automaton has 3422 states and 4944 transitions. Word has length 193 [2022-11-19 08:23:10,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:23:10,390 INFO L495 AbstractCegarLoop]: Abstraction has 3422 states and 4944 transitions. [2022-11-19 08:23:10,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-19 08:23:10,391 INFO L276 IsEmpty]: Start isEmpty. Operand 3422 states and 4944 transitions. [2022-11-19 08:23:10,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-19 08:23:10,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:23:10,397 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:23:10,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:23:10,398 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)] === [2022-11-19 08:23:10,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:23:10,398 INFO L85 PathProgramCache]: Analyzing trace with hash -351310743, now seen corresponding path program 1 times [2022-11-19 08:23:10,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:23:10,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419125959] [2022-11-19 08:23:10,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:10,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:23:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:11,135 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2022-11-19 08:23:11,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:23:11,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419125959] [2022-11-19 08:23:11,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419125959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:23:11,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:23:11,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:23:11,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761686348] [2022-11-19 08:23:11,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:23:11,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:23:11,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:23:11,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:23:11,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:23:11,139 INFO L87 Difference]: Start difference. First operand 3422 states and 4944 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-19 08:23:13,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:23:13,356 INFO L93 Difference]: Finished difference Result 3428 states and 4949 transitions. [2022-11-19 08:23:13,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:23:13,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 201 [2022-11-19 08:23:13,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:23:13,378 INFO L225 Difference]: With dead ends: 3428 [2022-11-19 08:23:13,379 INFO L226 Difference]: Without dead ends: 3426 [2022-11-19 08:23:13,381 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 [2022-11-19 08:23:13,382 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1450 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:23:13,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-19 08:23:13,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3426 states. [2022-11-19 08:23:13,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 3426. [2022-11-19 08:23:13,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3426 states, 2003 states have (on average 1.288567149276086) internal successors, (2581), 2061 states have internal predecessors, (2581), 1185 states have call successors, (1185), 240 states have call predecessors, (1185), 235 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-11-19 08:23:13,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 4947 transitions. [2022-11-19 08:23:13,677 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 4947 transitions. Word has length 201 [2022-11-19 08:23:13,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:23:13,678 INFO L495 AbstractCegarLoop]: Abstraction has 3426 states and 4947 transitions. [2022-11-19 08:23:13,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-19 08:23:13,678 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 4947 transitions. [2022-11-19 08:23:13,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-11-19 08:23:13,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:23:13,685 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:23:13,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:23:13,685 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)] === [2022-11-19 08:23:13,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:23:13,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1346708816, now seen corresponding path program 1 times [2022-11-19 08:23:13,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:23:13,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974043067] [2022-11-19 08:23:13,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:13,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:23:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:14,571 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2022-11-19 08:23:14,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:23:14,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974043067] [2022-11-19 08:23:14,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974043067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:23:14,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:23:14,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:23:14,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413639065] [2022-11-19 08:23:14,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:23:14,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:23:14,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:23:14,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:23:14,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:23:14,577 INFO L87 Difference]: Start difference. First operand 3426 states and 4947 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-19 08:23:17,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:23:17,051 INFO L93 Difference]: Finished difference Result 3432 states and 4952 transitions. [2022-11-19 08:23:17,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:23:17,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 203 [2022-11-19 08:23:17,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:23:17,088 INFO L225 Difference]: With dead ends: 3432 [2022-11-19 08:23:17,089 INFO L226 Difference]: Without dead ends: 3430 [2022-11-19 08:23:17,092 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 [2022-11-19 08:23:17,092 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1451 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:23:17,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-19 08:23:17,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2022-11-19 08:23:17,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 3430. [2022-11-19 08:23:17,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3430 states, 2006 states have (on average 1.2881355932203389) internal successors, (2584), 2064 states have internal predecessors, (2584), 1185 states have call successors, (1185), 241 states have call predecessors, (1185), 236 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-11-19 08:23:17,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 4950 transitions. [2022-11-19 08:23:17,489 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 4950 transitions. Word has length 203 [2022-11-19 08:23:17,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:23:17,491 INFO L495 AbstractCegarLoop]: Abstraction has 3430 states and 4950 transitions. [2022-11-19 08:23:17,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-19 08:23:17,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 4950 transitions. [2022-11-19 08:23:17,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-19 08:23:17,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:23:17,499 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:23:17,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:23:17,499 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)] === [2022-11-19 08:23:17,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:23:17,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1784075232, now seen corresponding path program 1 times [2022-11-19 08:23:17,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:23:17,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230838703] [2022-11-19 08:23:17,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:17,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:23:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:18,296 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2022-11-19 08:23:18,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:23:18,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230838703] [2022-11-19 08:23:18,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230838703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:23:18,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:23:18,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:23:18,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713702667] [2022-11-19 08:23:18,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:23:18,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:23:18,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:23:18,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:23:18,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:23:18,301 INFO L87 Difference]: Start difference. First operand 3430 states and 4950 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-19 08:23:21,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:23:21,110 INFO L93 Difference]: Finished difference Result 3436 states and 4955 transitions. [2022-11-19 08:23:21,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:23:21,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 208 [2022-11-19 08:23:21,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:23:21,128 INFO L225 Difference]: With dead ends: 3436 [2022-11-19 08:23:21,128 INFO L226 Difference]: Without dead ends: 3434 [2022-11-19 08:23:21,131 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 [2022-11-19 08:23:21,132 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1451 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:23:21,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1457 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-19 08:23:21,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2022-11-19 08:23:21,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3434. [2022-11-19 08:23:21,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3434 states, 2009 states have (on average 1.2877053260328521) internal successors, (2587), 2067 states have internal predecessors, (2587), 1185 states have call successors, (1185), 242 states have call predecessors, (1185), 237 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-11-19 08:23:21,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 4953 transitions. [2022-11-19 08:23:21,556 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 4953 transitions. Word has length 208 [2022-11-19 08:23:21,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:23:21,557 INFO L495 AbstractCegarLoop]: Abstraction has 3434 states and 4953 transitions. [2022-11-19 08:23:21,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-19 08:23:21,558 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 4953 transitions. [2022-11-19 08:23:21,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-19 08:23:21,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:23:21,564 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 7, 6, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:23:21,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 08:23:21,564 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)] === [2022-11-19 08:23:21,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:23:21,565 INFO L85 PathProgramCache]: Analyzing trace with hash -2078726554, now seen corresponding path program 1 times [2022-11-19 08:23:21,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:23:21,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087913647] [2022-11-19 08:23:21,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:21,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:23:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:22,331 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 731 trivial. 0 not checked. [2022-11-19 08:23:22,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:23:22,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087913647] [2022-11-19 08:23:22,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087913647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:23:22,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:23:22,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:23:22,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144686154] [2022-11-19 08:23:22,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:23:22,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:23:22,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:23:22,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:23:22,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:23:22,335 INFO L87 Difference]: Start difference. First operand 3434 states and 4953 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-19 08:23:25,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:23:25,306 INFO L93 Difference]: Finished difference Result 3548 states and 5070 transitions. [2022-11-19 08:23:25,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:23:25,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 217 [2022-11-19 08:23:25,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:23:25,323 INFO L225 Difference]: With dead ends: 3548 [2022-11-19 08:23:25,324 INFO L226 Difference]: Without dead ends: 3546 [2022-11-19 08:23:25,327 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 [2022-11-19 08:23:25,327 INFO L413 NwaCegarLoop]: 1319 mSDtfsCounter, 1244 mSDsluCounter, 2851 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 4170 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:23:25,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 4170 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-19 08:23:25,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3546 states. [2022-11-19 08:23:25,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3546 to 3546. [2022-11-19 08:23:25,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3546 states, 2070 states have (on average 1.2821256038647344) internal successors, (2654), 2132 states have internal predecessors, (2654), 1209 states have call successors, (1209), 269 states have call predecessors, (1209), 264 states have return successors, (1205), 1186 states have call predecessors, (1205), 1205 states have call successors, (1205) [2022-11-19 08:23:25,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 5068 transitions. [2022-11-19 08:23:25,836 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 5068 transitions. Word has length 217 [2022-11-19 08:23:25,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:23:25,837 INFO L495 AbstractCegarLoop]: Abstraction has 3546 states and 5068 transitions. [2022-11-19 08:23:25,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-19 08:23:25,838 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 5068 transitions. [2022-11-19 08:23:25,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-19 08:23:25,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:23:25,845 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 8, 7, 7, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:23:25,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 08:23:25,846 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:23:25,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:23:25,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1436565514, now seen corresponding path program 1 times [2022-11-19 08:23:25,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:23:25,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265862634] [2022-11-19 08:23:25,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:25,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:23:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:26,666 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2022-11-19 08:23:26,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:23:26,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265862634] [2022-11-19 08:23:26,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265862634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:23:26,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:23:26,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:23:26,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850029373] [2022-11-19 08:23:26,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:23:26,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:23:26,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:23:26,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:23:26,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:23:26,670 INFO L87 Difference]: Start difference. First operand 3546 states and 5068 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-19 08:23:29,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:23:29,420 INFO L93 Difference]: Finished difference Result 3552 states and 5073 transitions. [2022-11-19 08:23:29,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:23:29,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 222 [2022-11-19 08:23:29,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:23:29,443 INFO L225 Difference]: With dead ends: 3552 [2022-11-19 08:23:29,444 INFO L226 Difference]: Without dead ends: 3550 [2022-11-19 08:23:29,447 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 [2022-11-19 08:23:29,448 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1450 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:23:29,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-19 08:23:29,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3550 states. [2022-11-19 08:23:29,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3550 to 3550. [2022-11-19 08:23:29,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 2073 states have (on average 1.281717317896768) internal successors, (2657), 2135 states have internal predecessors, (2657), 1209 states have call successors, (1209), 270 states have call predecessors, (1209), 265 states have return successors, (1205), 1186 states have call predecessors, (1205), 1205 states have call successors, (1205) [2022-11-19 08:23:29,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 5071 transitions. [2022-11-19 08:23:29,917 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 5071 transitions. Word has length 222 [2022-11-19 08:23:29,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:23:29,918 INFO L495 AbstractCegarLoop]: Abstraction has 3550 states and 5071 transitions. [2022-11-19 08:23:29,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-19 08:23:29,918 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 5071 transitions. [2022-11-19 08:23:29,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-19 08:23:29,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:23:29,925 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 9, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:23:29,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 08:23:29,925 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)] === [2022-11-19 08:23:29,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:23:29,926 INFO L85 PathProgramCache]: Analyzing trace with hash -2122643248, now seen corresponding path program 1 times [2022-11-19 08:23:29,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:23:29,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032630422] [2022-11-19 08:23:29,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:29,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:23:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:30,688 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2022-11-19 08:23:30,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:23:30,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032630422] [2022-11-19 08:23:30,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032630422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:23:30,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:23:30,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:23:30,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956183489] [2022-11-19 08:23:30,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:23:30,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:23:30,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:23:30,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:23:30,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:23:30,691 INFO L87 Difference]: Start difference. First operand 3550 states and 5071 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-19 08:23:32,630 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 [] [2022-11-19 08:23:34,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:23:34,234 INFO L93 Difference]: Finished difference Result 3556 states and 5076 transitions. [2022-11-19 08:23:34,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:23:34,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 223 [2022-11-19 08:23:34,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:23:34,250 INFO L225 Difference]: With dead ends: 3556 [2022-11-19 08:23:34,250 INFO L226 Difference]: Without dead ends: 3554 [2022-11-19 08:23:34,253 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 [2022-11-19 08:23:34,254 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1451 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:23:34,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-19 08:23:34,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3554 states. [2022-11-19 08:23:34,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3554 to 3554. [2022-11-19 08:23:34,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 2076 states have (on average 1.28131021194605) internal successors, (2660), 2138 states have internal predecessors, (2660), 1209 states have call successors, (1209), 271 states have call predecessors, (1209), 266 states have return successors, (1205), 1186 states have call predecessors, (1205), 1205 states have call successors, (1205) [2022-11-19 08:23:34,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 5074 transitions. [2022-11-19 08:23:34,747 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 5074 transitions. Word has length 223 [2022-11-19 08:23:34,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:23:34,748 INFO L495 AbstractCegarLoop]: Abstraction has 3554 states and 5074 transitions. [2022-11-19 08:23:34,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-19 08:23:34,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 5074 transitions. [2022-11-19 08:23:34,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-11-19 08:23:34,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:23:34,754 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 10, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:23:34,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 08:23:34,754 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)] === [2022-11-19 08:23:34,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:23:34,755 INFO L85 PathProgramCache]: Analyzing trace with hash -382238880, now seen corresponding path program 1 times [2022-11-19 08:23:34,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:23:34,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666203690] [2022-11-19 08:23:34,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:34,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:23:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:35,400 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2022-11-19 08:23:35,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:23:35,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666203690] [2022-11-19 08:23:35,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666203690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:23:35,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:23:35,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:23:35,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462014673] [2022-11-19 08:23:35,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:23:35,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:23:35,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:23:35,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:23:35,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:23:35,403 INFO L87 Difference]: Start difference. First operand 3554 states and 5074 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-19 08:23:37,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:23:37,549 INFO L93 Difference]: Finished difference Result 3560 states and 5079 transitions. [2022-11-19 08:23:37,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:23:37,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 228 [2022-11-19 08:23:37,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:23:37,563 INFO L225 Difference]: With dead ends: 3560 [2022-11-19 08:23:37,564 INFO L226 Difference]: Without dead ends: 3558 [2022-11-19 08:23:37,566 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 [2022-11-19 08:23:37,566 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1451 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:23:37,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1453 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-19 08:23:37,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3558 states. [2022-11-19 08:23:37,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3558 to 3558. [2022-11-19 08:23:37,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 2079 states have (on average 1.280904280904281) internal successors, (2663), 2141 states have internal predecessors, (2663), 1209 states have call successors, (1209), 272 states have call predecessors, (1209), 267 states have return successors, (1205), 1186 states have call predecessors, (1205), 1205 states have call successors, (1205) [2022-11-19 08:23:37,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 5077 transitions. [2022-11-19 08:23:37,900 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 5077 transitions. Word has length 228 [2022-11-19 08:23:37,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:23:37,901 INFO L495 AbstractCegarLoop]: Abstraction has 3558 states and 5077 transitions. [2022-11-19 08:23:37,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-19 08:23:37,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 5077 transitions. [2022-11-19 08:23:37,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-19 08:23:37,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:23:37,907 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 11, 10, 10, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:23:37,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 08:23:37,908 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)] === [2022-11-19 08:23:37,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:23:37,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1219213968, now seen corresponding path program 1 times [2022-11-19 08:23:37,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:23:37,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194502192] [2022-11-19 08:23:37,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:37,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:23:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 843 trivial. 0 not checked. [2022-11-19 08:23:38,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:23:38,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194502192] [2022-11-19 08:23:38,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194502192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:23:38,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:23:38,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:23:38,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876494276] [2022-11-19 08:23:38,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:23:38,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:23:38,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:23:38,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:23:38,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:23:38,569 INFO L87 Difference]: Start difference. First operand 3558 states and 5077 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-19 08:23:41,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:23:41,225 INFO L93 Difference]: Finished difference Result 3564 states and 5082 transitions. [2022-11-19 08:23:41,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:23:41,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 233 [2022-11-19 08:23:41,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:23:41,240 INFO L225 Difference]: With dead ends: 3564 [2022-11-19 08:23:41,240 INFO L226 Difference]: Without dead ends: 3560 [2022-11-19 08:23:41,243 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 [2022-11-19 08:23:41,243 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1451 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:23:41,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1452 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-19 08:23:41,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3560 states. [2022-11-19 08:23:41,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3560 to 3560. [2022-11-19 08:23:41,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 2081 states have (on average 1.280153772224892) internal successors, (2664), 2142 states have internal predecessors, (2664), 1209 states have call successors, (1209), 273 states have call predecessors, (1209), 267 states have return successors, (1205), 1186 states have call predecessors, (1205), 1205 states have call successors, (1205) [2022-11-19 08:23:41,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 5078 transitions. [2022-11-19 08:23:41,723 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 5078 transitions. Word has length 233 [2022-11-19 08:23:41,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:23:41,724 INFO L495 AbstractCegarLoop]: Abstraction has 3560 states and 5078 transitions. [2022-11-19 08:23:41,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-19 08:23:41,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 5078 transitions. [2022-11-19 08:23:41,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-19 08:23:41,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:23:41,731 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 12, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:23:41,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-19 08:23:41,731 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:23:41,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:23:41,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1906971936, now seen corresponding path program 1 times [2022-11-19 08:23:41,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:23:41,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527893683] [2022-11-19 08:23:41,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:41,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:23:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:42,424 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 883 trivial. 0 not checked. [2022-11-19 08:23:42,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:23:42,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527893683] [2022-11-19 08:23:42,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527893683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:23:42,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:23:42,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:23:42,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914550382] [2022-11-19 08:23:42,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:23:42,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:23:42,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:23:42,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:23:42,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:23:42,430 INFO L87 Difference]: Start difference. First operand 3560 states and 5078 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 08:23:45,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:23:45,091 INFO L93 Difference]: Finished difference Result 3560 states and 5078 transitions. [2022-11-19 08:23:45,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:23:45,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 238 [2022-11-19 08:23:45,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:23:45,109 INFO L225 Difference]: With dead ends: 3560 [2022-11-19 08:23:45,109 INFO L226 Difference]: Without dead ends: 3479 [2022-11-19 08:23:45,112 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 [2022-11-19 08:23:45,113 INFO L413 NwaCegarLoop]: 1305 mSDtfsCounter, 1447 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:23:45,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 3899 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-19 08:23:45,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2022-11-19 08:23:45,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3479. [2022-11-19 08:23:45,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3479 states, 2041 states have (on average 1.282704556589907) internal successors, (2618), 2096 states have internal predecessors, (2618), 1182 states have call successors, (1182), 258 states have call predecessors, (1182), 254 states have return successors, (1182), 1166 states have call predecessors, (1182), 1182 states have call successors, (1182) [2022-11-19 08:23:45,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 4982 transitions. [2022-11-19 08:23:45,658 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 4982 transitions. Word has length 238 [2022-11-19 08:23:45,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:23:45,659 INFO L495 AbstractCegarLoop]: Abstraction has 3479 states and 4982 transitions. [2022-11-19 08:23:45,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 08:23:45,659 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 4982 transitions. [2022-11-19 08:23:45,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-11-19 08:23:45,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:23:45,663 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 12, 12, 12, 12, 12, 12, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:23:45,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-19 08:23:45,663 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:23:45,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:23:45,664 INFO L85 PathProgramCache]: Analyzing trace with hash 713678916, now seen corresponding path program 1 times [2022-11-19 08:23:45,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:23:45,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290926154] [2022-11-19 08:23:45,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:45,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:23:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:46,090 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2022-11-19 08:23:46,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:23:46,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290926154] [2022-11-19 08:23:46,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290926154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:23:46,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:23:46,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:23:46,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129118411] [2022-11-19 08:23:46,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:23:46,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:23:46,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:23:46,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:23:46,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:23:46,093 INFO L87 Difference]: Start difference. First operand 3479 states and 4982 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-19 08:23:48,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:23:48,637 INFO L93 Difference]: Finished difference Result 5949 states and 8505 transitions. [2022-11-19 08:23:48,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:23:48,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 247 [2022-11-19 08:23:48,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:23:48,648 INFO L225 Difference]: With dead ends: 5949 [2022-11-19 08:23:48,648 INFO L226 Difference]: Without dead ends: 2513 [2022-11-19 08:23:48,662 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 [2022-11-19 08:23:48,663 INFO L413 NwaCegarLoop]: 1702 mSDtfsCounter, 716 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 2934 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:23:48,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 2934 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-19 08:23:48,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2022-11-19 08:23:49,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2507. [2022-11-19 08:23:49,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 1501 states have (on average 1.2698201199200534) internal successors, (1906), 1538 states have internal predecessors, (1906), 815 states have call successors, (815), 191 states have call predecessors, (815), 189 states have return successors, (815), 804 states have call predecessors, (815), 815 states have call successors, (815) [2022-11-19 08:23:49,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3536 transitions. [2022-11-19 08:23:49,075 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3536 transitions. Word has length 247 [2022-11-19 08:23:49,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:23:49,076 INFO L495 AbstractCegarLoop]: Abstraction has 2507 states and 3536 transitions. [2022-11-19 08:23:49,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-19 08:23:49,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3536 transitions. [2022-11-19 08:23:49,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-19 08:23:49,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:23:49,081 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 12, 12, 12, 12, 12, 12, 5, 5, 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] [2022-11-19 08:23:49,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-19 08:23:49,081 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)] === [2022-11-19 08:23:49,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:23:49,082 INFO L85 PathProgramCache]: Analyzing trace with hash 760498289, now seen corresponding path program 1 times [2022-11-19 08:23:49,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:23:49,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721253651] [2022-11-19 08:23:49,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:49,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:23:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:49,522 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2022-11-19 08:23:49,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:23:49,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721253651] [2022-11-19 08:23:49,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721253651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:23:49,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:23:49,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:23:49,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813159643] [2022-11-19 08:23:49,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:23:49,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:23:49,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:23:49,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:23:49,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:23:49,525 INFO L87 Difference]: Start difference. First operand 2507 states and 3536 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-19 08:23:51,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:23:51,696 INFO L93 Difference]: Finished difference Result 5577 states and 7886 transitions. [2022-11-19 08:23:51,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:23:51,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 294 [2022-11-19 08:23:51,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:23:51,712 INFO L225 Difference]: With dead ends: 5577 [2022-11-19 08:23:51,712 INFO L226 Difference]: Without dead ends: 3172 [2022-11-19 08:23:51,722 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 [2022-11-19 08:23:51,723 INFO L413 NwaCegarLoop]: 1854 mSDtfsCounter, 724 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:23:51,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 3081 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-19 08:23:51,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3172 states. [2022-11-19 08:23:52,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3172 to 3166. [2022-11-19 08:23:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3166 states, 1899 states have (on average 1.2669826224328593) internal successors, (2406), 1945 states have internal predecessors, (2406), 1020 states have call successors, (1020), 247 states have call predecessors, (1020), 245 states have return successors, (1020), 1006 states have call predecessors, (1020), 1020 states have call successors, (1020) [2022-11-19 08:23:52,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3166 states to 3166 states and 4446 transitions. [2022-11-19 08:23:52,266 INFO L78 Accepts]: Start accepts. Automaton has 3166 states and 4446 transitions. Word has length 294 [2022-11-19 08:23:52,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:23:52,267 INFO L495 AbstractCegarLoop]: Abstraction has 3166 states and 4446 transitions. [2022-11-19 08:23:52,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-19 08:23:52,267 INFO L276 IsEmpty]: Start isEmpty. Operand 3166 states and 4446 transitions. [2022-11-19 08:23:52,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-19 08:23:52,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:23:52,273 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 12, 12, 12, 12, 12, 12, 7, 7, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:23:52,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-19 08:23:52,273 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:23:52,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:23:52,274 INFO L85 PathProgramCache]: Analyzing trace with hash 765244150, now seen corresponding path program 1 times [2022-11-19 08:23:52,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:23:52,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648564651] [2022-11-19 08:23:52,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:52,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:23:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:52,823 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2022-11-19 08:23:52,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:23:52,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648564651] [2022-11-19 08:23:52,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648564651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:23:52,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:23:52,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:23:52,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863662118] [2022-11-19 08:23:52,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:23:52,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:23:52,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:23:52,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:23:52,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:23:52,827 INFO L87 Difference]: Start difference. First operand 3166 states and 4446 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-19 08:23:54,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:23:55,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:23:55,436 INFO L93 Difference]: Finished difference Result 6242 states and 8809 transitions. [2022-11-19 08:23:55,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:23:55,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 338 [2022-11-19 08:23:55,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:23:55,468 INFO L225 Difference]: With dead ends: 6242 [2022-11-19 08:23:55,468 INFO L226 Difference]: Without dead ends: 3178 [2022-11-19 08:23:55,479 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 [2022-11-19 08:23:55,480 INFO L413 NwaCegarLoop]: 1261 mSDtfsCounter, 1 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2517 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:23:55,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2517 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-19 08:23:55,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3178 states. [2022-11-19 08:23:55,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3178 to 3170. [2022-11-19 08:23:55,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3170 states, 1903 states have (on average 1.2664214398318445) internal successors, (2410), 1949 states have internal predecessors, (2410), 1020 states have call successors, (1020), 247 states have call predecessors, (1020), 245 states have return successors, (1020), 1006 states have call predecessors, (1020), 1020 states have call successors, (1020) [2022-11-19 08:23:55,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3170 states to 3170 states and 4450 transitions. [2022-11-19 08:23:55,933 INFO L78 Accepts]: Start accepts. Automaton has 3170 states and 4450 transitions. Word has length 338 [2022-11-19 08:23:55,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:23:55,934 INFO L495 AbstractCegarLoop]: Abstraction has 3170 states and 4450 transitions. [2022-11-19 08:23:55,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-19 08:23:55,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3170 states and 4450 transitions. [2022-11-19 08:23:55,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-11-19 08:23:55,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:23:55,941 INFO L195 NwaCegarLoop]: trace histogram [18, 15, 12, 12, 12, 12, 12, 12, 7, 7, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:23:55,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-19 08:23:55,941 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)] === [2022-11-19 08:23:55,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:23:55,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1608355958, now seen corresponding path program 1 times [2022-11-19 08:23:55,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:23:55,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10287257] [2022-11-19 08:23:55,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:55,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:23:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1005 trivial. 0 not checked. [2022-11-19 08:23:56,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:23:56,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10287257] [2022-11-19 08:23:56,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10287257] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:23:56,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524883390] [2022-11-19 08:23:56,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:56,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:23:56,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c077afd9-ef65-47d5-ba85-544a18bfd571/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:23:56,534 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c077afd9-ef65-47d5-ba85-544a18bfd571/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:23:56,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c077afd9-ef65-47d5-ba85-544a18bfd571/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:23:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:57,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 4608 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:23:57,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:23:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 106 proven. 1 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2022-11-19 08:23:58,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:23:58,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1005 trivial. 0 not checked. [2022-11-19 08:23:58,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524883390] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:23:58,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [606429076] [2022-11-19 08:23:58,326 INFO L159 IcfgInterpreter]: Started Sifa with 176 locations of interest [2022-11-19 08:23:58,327 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:23:58,332 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:23:58,337 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:23:58,338 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:24:12,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-11-19 08:24:12,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-11-19 08:24:15,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21