./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-sun-sunhme.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_0e85929d-de7b-4b15-99d1-e13550be7e22/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/bin/utaipan-7li7fVZpFI --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 2754d1ad46049a17f9b43992f91364cab029d3fcf93c78791853a365602d9e1a --- 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-5e519f3 [2022-11-03 03:39:19,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:39:19,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:39:19,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:39:19,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:39:19,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:39:19,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:39:19,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:39:19,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:39:19,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:39:19,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:39:19,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:39:19,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:39:19,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:39:19,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:39:19,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:39:19,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:39:19,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:39:19,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:39:19,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:39:19,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:39:19,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:39:19,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:39:19,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:39:19,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:39:19,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:39:19,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:39:19,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:39:19,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:39:19,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:39:19,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:39:19,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:39:19,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:39:19,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:39:19,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:39:19,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:39:19,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:39:19,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:39:19,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:39:19,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:39:19,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:39:19,939 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:39:19,977 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:39:19,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:39:19,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:39:19,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:39:19,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:39:19,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:39:19,980 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:39:19,980 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:39:19,981 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:39:19,981 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:39:19,982 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:39:19,982 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:39:19,982 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:39:19,983 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:39:19,983 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:39:19,983 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:39:19,983 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:39:19,983 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:39:19,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:39:19,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:39:19,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:39:19,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:39:19,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:39:19,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:39:19,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:39:19,986 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:39:19,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:39:19,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:39:19,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:39:19,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:39:19,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:39:19,988 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:39:19,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:39:19,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:39:19,988 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:39:19,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:39:19,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:39:19,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:39:19,989 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_0e85929d-de7b-4b15-99d1-e13550be7e22/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2754d1ad46049a17f9b43992f91364cab029d3fcf93c78791853a365602d9e1a [2022-11-03 03:39:20,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:39:20,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:39:20,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:39:20,277 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:39:20,277 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:39:20,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2022-11-03 03:39:20,350 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/bin/utaipan-7li7fVZpFI/data/563ed870b/31db0a11bea24bd68d6af42ada6cb6be/FLAGee3bd50bd [2022-11-03 03:39:21,357 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:39:21,358 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2022-11-03 03:39:21,409 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/bin/utaipan-7li7fVZpFI/data/563ed870b/31db0a11bea24bd68d6af42ada6cb6be/FLAGee3bd50bd [2022-11-03 03:39:21,747 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/bin/utaipan-7li7fVZpFI/data/563ed870b/31db0a11bea24bd68d6af42ada6cb6be [2022-11-03 03:39:21,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:39:21,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:39:21,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:39:21,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:39:21,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:39:21,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:39:21" (1/1) ... [2022-11-03 03:39:21,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4033642e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:39:21, skipping insertion in model container [2022-11-03 03:39:21,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:39:21" (1/1) ... [2022-11-03 03:39:21,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:39:21,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:39:24,934 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347312,347325] [2022-11-03 03:39:24,936 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347481,347494] [2022-11-03 03:39:24,937 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347648,347661] [2022-11-03 03:39:24,938 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347816,347829] [2022-11-03 03:39:24,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:39:24,997 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:39:25,449 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347312,347325] [2022-11-03 03:39:25,450 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347481,347494] [2022-11-03 03:39:25,450 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347648,347661] [2022-11-03 03:39:25,451 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347816,347829] [2022-11-03 03:39:25,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:39:25,650 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:39:25,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:39:25 WrapperNode [2022-11-03 03:39:25,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:39:25,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:39:25,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:39:25,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:39:25,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:39:25" (1/1) ... [2022-11-03 03:39:25,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:39:25" (1/1) ... [2022-11-03 03:39:26,046 INFO L138 Inliner]: procedures = 447, calls = 2093, calls flagged for inlining = 218, calls inlined = 201, statements flattened = 4932 [2022-11-03 03:39:26,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:39:26,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:39:26,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:39:26,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:39:26,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:39:25" (1/1) ... [2022-11-03 03:39:26,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:39:25" (1/1) ... [2022-11-03 03:39:26,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:39:25" (1/1) ... [2022-11-03 03:39:26,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:39:25" (1/1) ... [2022-11-03 03:39:26,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:39:25" (1/1) ... [2022-11-03 03:39:26,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:39:25" (1/1) ... [2022-11-03 03:39:26,328 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:39:25" (1/1) ... [2022-11-03 03:39:26,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:39:25" (1/1) ... [2022-11-03 03:39:26,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:39:26,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:39:26,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:39:26,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:39:26,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:39:25" (1/1) ... [2022-11-03 03:39:26,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:39:26,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:39:26,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:39:26,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e85929d-de7b-4b15-99d1-e13550be7e22/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:39:26,471 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-03 03:39:26,471 INFO L130 BoogieDeclarations]: Found specification of procedure BB_GET_BIT2 [2022-11-03 03:39:26,471 INFO L138 BoogieDeclarations]: Found implementation of procedure BB_GET_BIT2 [2022-11-03 03:39:26,471 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2022-11-03 03:39:26,472 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2022-11-03 03:39:26,472 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 03:39:26,472 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 03:39:26,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:39:26,472 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:39:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_open [2022-11-03 03:39:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_open [2022-11-03 03:39:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_poll_stop [2022-11-03 03:39:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_poll_stop [2022-11-03 03:39:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure is_quattro_p [2022-11-03 03:39:26,474 INFO L138 BoogieDeclarations]: Found implementation of procedure is_quattro_p [2022-11-03 03:39:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 03:39:26,474 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 03:39:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_close [2022-11-03 03:39:26,474 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_close [2022-11-03 03:39:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:39:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:39:26,475 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 03:39:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 03:39:26,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:39:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:39:26,476 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_set_multicast [2022-11-03 03:39:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_set_multicast [2022-11-03 03:39:26,476 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 03:39:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 03:39:26,476 INFO L130 BoogieDeclarations]: Found specification of procedure BB_PUT_BIT [2022-11-03 03:39:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure BB_PUT_BIT [2022-11-03 03:39:26,477 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-11-03 03:39:26,477 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-11-03 03:39:26,477 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_begin_auto_negotiation [2022-11-03 03:39:26,477 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_begin_auto_negotiation [2022-11-03 03:39:26,477 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_get_counters [2022-11-03 03:39:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_get_counters [2022-11-03 03:39:26,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_happy_lock_of_happy_meal [2022-11-03 03:39:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_happy_lock_of_happy_meal [2022-11-03 03:39:26,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 03:39:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 03:39:26,478 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 03:39:26,479 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 03:39:26,479 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-03 03:39:26,479 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-03 03:39:26,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer [2022-11-03 03:39:26,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer [2022-11-03 03:39:26,480 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 03:39:26,480 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 03:39:26,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:39:26,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:39:26,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:39:26,480 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 03:39:26,481 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 03:39:26,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_happy_lock_of_happy_meal [2022-11-03 03:39:26,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_happy_lock_of_happy_meal [2022-11-03 03:39:26,481 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 03:39:26,481 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 03:39:26,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:39:26,482 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 03:39:26,482 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 03:39:26,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:39:26,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 03:39:26,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 03:39:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:39:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 03:39:26,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 03:39:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 03:39:26,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 03:39:26,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 03:39:26,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 03:39:26,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 03:39:26,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 03:39:26,484 INFO L130 BoogieDeclarations]: Found specification of procedure set_happy_link_modes [2022-11-03 03:39:26,484 INFO L138 BoogieDeclarations]: Found implementation of procedure set_happy_link_modes [2022-11-03 03:39:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_tcvr_reset [2022-11-03 03:39:26,485 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_tcvr_reset [2022-11-03 03:39:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 03:39:26,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 03:39:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:39:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 03:39:26,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 03:39:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 03:39:26,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 03:39:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_tx_timeout [2022-11-03 03:39:26,486 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_tx_timeout [2022-11-03 03:39:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-03 03:39:26,487 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-03 03:39:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:39:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_tcvr_read [2022-11-03 03:39:26,487 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_tcvr_read [2022-11-03 03:39:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:39:26,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:39:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 03:39:26,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 03:39:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:39:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:39:26,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:39:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:39:26,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:39:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 03:39:26,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 03:39:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-03 03:39:26,490 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-03 03:39:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 03:39:26,494 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 03:39:26,495 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 03:39:26,495 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 03:39:26,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 03:39:26,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 03:39:26,496 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 03:39:26,497 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 03:39:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure is_lucent_phy [2022-11-03 03:39:26,497 INFO L138 BoogieDeclarations]: Found implementation of procedure is_lucent_phy [2022-11-03 03:39:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:39:26,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:39:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure hme_read_desc32 [2022-11-03 03:39:26,503 INFO L138 BoogieDeclarations]: Found implementation of procedure hme_read_desc32 [2022-11-03 03:39:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-03 03:39:26,503 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-03 03:39:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:39:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_clean_rings [2022-11-03 03:39:26,504 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_clean_rings [2022-11-03 03:39:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:39:26,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:39:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:39:26,588 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 03:39:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 03:39:26,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:39:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:39:26,588 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-03 03:39:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-03 03:39:26,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 03:39:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 03:39:26,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_happy_meal_exit_14_2 [2022-11-03 03:39:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_happy_meal_exit_14_2 [2022-11-03 03:39:26,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:39:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:39:26,589 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 03:39:26,589 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 03:39:26,589 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-03 03:39:26,589 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-03 03:39:26,589 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-03 03:39:26,589 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-03 03:39:26,589 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-03 03:39:26,589 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-03 03:39:26,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:39:26,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:39:26,589 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-03 03:39:26,589 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-03 03:39:26,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:39:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 03:39:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 03:39:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_stop [2022-11-03 03:39:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_stop [2022-11-03 03:39:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 03:39:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 03:39:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 03:39:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 03:39:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-03 03:39:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-03 03:39:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_pci_remove [2022-11-03 03:39:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_pci_remove [2022-11-03 03:39:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_63 [2022-11-03 03:39:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_63 [2022-11-03 03:39:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_init [2022-11-03 03:39:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_init [2022-11-03 03:39:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-03 03:39:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-03 03:39:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 03:39:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 03:39:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_tcvr_write [2022-11-03 03:39:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_tcvr_write [2022-11-03 03:39:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:39:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:39:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:39:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-03 03:39:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-03 03:39:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_64 [2022-11-03 03:39:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_64 [2022-11-03 03:39:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 03:39:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 03:39:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 03:39:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 03:39:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed [2022-11-03 03:39:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed [2022-11-03 03:39:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 03:39:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 03:39:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:39:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-03 03:39:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-03 03:39:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 03:39:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 03:39:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-03 03:39:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-03 03:39:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_transceiver_check [2022-11-03 03:39:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_transceiver_check [2022-11-03 03:39:27,468 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:39:27,475 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:39:28,091 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:39:33,270 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 03:39:33,533 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:39:35,183 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:39:35,183 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:39:35,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:39:35 BoogieIcfgContainer [2022-11-03 03:39:35,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:39:35,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:39:35,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:39:35,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:39:35,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:39:21" (1/3) ... [2022-11-03 03:39:35,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb2f724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:39:35, skipping insertion in model container [2022-11-03 03:39:35,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:39:25" (2/3) ... [2022-11-03 03:39:35,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb2f724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:39:35, skipping insertion in model container [2022-11-03 03:39:35,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:39:35" (3/3) ... [2022-11-03 03:39:35,202 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2022-11-03 03:39:35,222 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:39:35,222 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 03:39:35,332 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:39:35,340 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;@5595c3d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:39:35,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 03:39:35,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 1543 states, 889 states have (on average 1.3093363329583803) internal successors, (1164), 929 states have internal predecessors, (1164), 562 states have call successors, (562), 90 states have call predecessors, (562), 89 states have return successors, (556), 542 states have call predecessors, (556), 556 states have call successors, (556) [2022-11-03 03:39:35,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-03 03:39:35,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:39:35,371 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:39:35,371 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)] === [2022-11-03 03:39:35,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:39:35,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1551010697, now seen corresponding path program 1 times [2022-11-03 03:39:35,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:39:35,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108602708] [2022-11-03 03:39:35,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:39:35,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:39:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:39:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-03 03:39:36,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:39:36,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108602708] [2022-11-03 03:39:36,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108602708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:39:36,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:39:36,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:39:36,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910978454] [2022-11-03 03:39:36,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:39:36,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:39:36,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:39:36,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:39:36,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:39:36,256 INFO L87 Difference]: Start difference. First operand has 1543 states, 889 states have (on average 1.3093363329583803) internal successors, (1164), 929 states have internal predecessors, (1164), 562 states have call successors, (562), 90 states have call predecessors, (562), 89 states have return successors, (556), 542 states have call predecessors, (556), 556 states have call successors, (556) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:39:39,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:39:40,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:39:40,753 INFO L93 Difference]: Finished difference Result 4517 states and 6788 transitions. [2022-11-03 03:39:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:39:40,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2022-11-03 03:39:40,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:39:40,812 INFO L225 Difference]: With dead ends: 4517 [2022-11-03 03:39:40,813 INFO L226 Difference]: Without dead ends: 2981 [2022-11-03 03:39:40,831 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 [2022-11-03 03:39:40,837 INFO L413 NwaCegarLoop]: 2547 mSDtfsCounter, 2163 mSDsluCounter, 2227 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2163 SdHoareTripleChecker+Valid, 4537 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:39:40,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2163 Valid, 4537 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-03 03:39:40,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2022-11-03 03:39:41,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 2977. [2022-11-03 03:39:41,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2977 states, 1729 states have (on average 1.302486986697513) internal successors, (2252), 1808 states have internal predecessors, (2252), 1071 states have call successors, (1071), 175 states have call predecessors, (1071), 174 states have return successors, (1067), 1039 states have call predecessors, (1067), 1067 states have call successors, (1067) [2022-11-03 03:39:41,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2977 states to 2977 states and 4390 transitions. [2022-11-03 03:39:41,170 INFO L78 Accepts]: Start accepts. Automaton has 2977 states and 4390 transitions. Word has length 101 [2022-11-03 03:39:41,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:39:41,171 INFO L495 AbstractCegarLoop]: Abstraction has 2977 states and 4390 transitions. [2022-11-03 03:39:41,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:39:41,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2977 states and 4390 transitions. [2022-11-03 03:39:41,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-03 03:39:41,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:39:41,182 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:39:41,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:39:41,183 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)] === [2022-11-03 03:39:41,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:39:41,184 INFO L85 PathProgramCache]: Analyzing trace with hash -133984029, now seen corresponding path program 1 times [2022-11-03 03:39:41,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:39:41,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894274337] [2022-11-03 03:39:41,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:39:41,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:39:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:39:41,560 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-03 03:39:41,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:39:41,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894274337] [2022-11-03 03:39:41,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894274337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:39:41,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:39:41,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:39:41,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107262691] [2022-11-03 03:39:41,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:39:41,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:39:41,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:39:41,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:39:41,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:39:41,564 INFO L87 Difference]: Start difference. First operand 2977 states and 4390 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:39:44,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:39:45,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:39:46,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:39:46,561 INFO L93 Difference]: Finished difference Result 8205 states and 12062 transitions. [2022-11-03 03:39:46,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:39:46,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 103 [2022-11-03 03:39:46,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:39:46,609 INFO L225 Difference]: With dead ends: 8205 [2022-11-03 03:39:46,609 INFO L226 Difference]: Without dead ends: 5245 [2022-11-03 03:39:46,630 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 [2022-11-03 03:39:46,632 INFO L413 NwaCegarLoop]: 2551 mSDtfsCounter, 2068 mSDsluCounter, 1872 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2068 SdHoareTripleChecker+Valid, 4206 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:39:46,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2068 Valid, 4206 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-03 03:39:46,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5245 states. [2022-11-03 03:39:47,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5245 to 5213. [2022-11-03 03:39:47,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5213 states, 3053 states have (on average 1.3075663282017687) internal successors, (3992), 3199 states have internal predecessors, (3992), 1828 states have call successors, (1828), 340 states have call predecessors, (1828), 329 states have return successors, (1834), 1749 states have call predecessors, (1834), 1824 states have call successors, (1834) [2022-11-03 03:39:47,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 7654 transitions. [2022-11-03 03:39:47,071 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 7654 transitions. Word has length 103 [2022-11-03 03:39:47,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:39:47,072 INFO L495 AbstractCegarLoop]: Abstraction has 5213 states and 7654 transitions. [2022-11-03 03:39:47,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:39:47,072 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 7654 transitions. [2022-11-03 03:39:47,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-03 03:39:47,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:39:47,077 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:39:47,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:39:47,078 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)] === [2022-11-03 03:39:47,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:39:47,087 INFO L85 PathProgramCache]: Analyzing trace with hash 901521060, now seen corresponding path program 1 times [2022-11-03 03:39:47,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:39:47,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178464352] [2022-11-03 03:39:47,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:39:47,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:39:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:39:47,317 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-03 03:39:47,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:39:47,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178464352] [2022-11-03 03:39:47,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178464352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:39:47,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:39:47,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:39:47,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410345264] [2022-11-03 03:39:47,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:39:47,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:39:47,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:39:47,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:39:47,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:39:47,325 INFO L87 Difference]: Start difference. First operand 5213 states and 7654 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:39:51,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:39:51,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:39:51,989 INFO L93 Difference]: Finished difference Result 14911 states and 21848 transitions. [2022-11-03 03:39:51,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:39:51,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 105 [2022-11-03 03:39:51,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:39:52,075 INFO L225 Difference]: With dead ends: 14911 [2022-11-03 03:39:52,075 INFO L226 Difference]: Without dead ends: 9715 [2022-11-03 03:39:52,115 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 [2022-11-03 03:39:52,119 INFO L413 NwaCegarLoop]: 2539 mSDtfsCounter, 1977 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 4495 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:39:52,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1977 Valid, 4495 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-03 03:39:52,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9715 states. [2022-11-03 03:39:52,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9715 to 9683. [2022-11-03 03:39:52,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9683 states, 5675 states have (on average 1.3043171806167402) internal successors, (7402), 5953 states have internal predecessors, (7402), 3368 states have call successors, (3368), 660 states have call predecessors, (3368), 637 states have return successors, (3388), 3207 states have call predecessors, (3388), 3364 states have call successors, (3388) [2022-11-03 03:39:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9683 states to 9683 states and 14158 transitions. [2022-11-03 03:39:52,913 INFO L78 Accepts]: Start accepts. Automaton has 9683 states and 14158 transitions. Word has length 105 [2022-11-03 03:39:52,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:39:52,916 INFO L495 AbstractCegarLoop]: Abstraction has 9683 states and 14158 transitions. [2022-11-03 03:39:52,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:39:52,917 INFO L276 IsEmpty]: Start isEmpty. Operand 9683 states and 14158 transitions. [2022-11-03 03:39:52,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 03:39:52,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:39:52,925 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:39:52,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:39:52,929 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)] === [2022-11-03 03:39:52,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:39:52,930 INFO L85 PathProgramCache]: Analyzing trace with hash 629152110, now seen corresponding path program 1 times [2022-11-03 03:39:52,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:39:52,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314360997] [2022-11-03 03:39:52,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:39:52,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:39:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:39:53,557 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-03 03:39:53,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:39:53,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314360997] [2022-11-03 03:39:53,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314360997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:39:53,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:39:53,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:39:53,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366320392] [2022-11-03 03:39:53,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:39:53,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:39:53,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:39:53,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:39:53,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:39:53,560 INFO L87 Difference]: Start difference. First operand 9683 states and 14158 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:39:58,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:40:01,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:40:05,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:05,092 INFO L93 Difference]: Finished difference Result 22623 states and 32927 transitions. [2022-11-03 03:40:05,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:40:05,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 110 [2022-11-03 03:40:05,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:05,198 INFO L225 Difference]: With dead ends: 22623 [2022-11-03 03:40:05,199 INFO L226 Difference]: Without dead ends: 12957 [2022-11-03 03:40:05,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:40:05,264 INFO L413 NwaCegarLoop]: 3238 mSDtfsCounter, 4863 mSDsluCounter, 5179 mSDsCounter, 0 mSdLazyCounter, 2920 mSolverCounterSat, 787 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5006 SdHoareTripleChecker+Valid, 7734 SdHoareTripleChecker+Invalid, 3708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 787 IncrementalHoareTripleChecker+Valid, 2920 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:05,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5006 Valid, 7734 Invalid, 3708 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [787 Valid, 2920 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2022-11-03 03:40:05,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12957 states. [2022-11-03 03:40:06,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12957 to 12885. [2022-11-03 03:40:06,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12885 states, 7468 states have (on average 1.2838778789501875) internal successors, (9588), 7831 states have internal predecessors, (9588), 4505 states have call successors, (4505), 946 states have call predecessors, (4505), 909 states have return successors, (4513), 4296 states have call predecessors, (4513), 4501 states have call successors, (4513) [2022-11-03 03:40:06,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12885 states to 12885 states and 18606 transitions. [2022-11-03 03:40:06,234 INFO L78 Accepts]: Start accepts. Automaton has 12885 states and 18606 transitions. Word has length 110 [2022-11-03 03:40:06,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:06,235 INFO L495 AbstractCegarLoop]: Abstraction has 12885 states and 18606 transitions. [2022-11-03 03:40:06,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:40:06,235 INFO L276 IsEmpty]: Start isEmpty. Operand 12885 states and 18606 transitions. [2022-11-03 03:40:06,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-03 03:40:06,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:06,237 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:40:06,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:40:06,238 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:40:06,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:06,238 INFO L85 PathProgramCache]: Analyzing trace with hash 175364981, now seen corresponding path program 1 times [2022-11-03 03:40:06,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:06,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509311677] [2022-11-03 03:40:06,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:06,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:06,470 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-03 03:40:06,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:06,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509311677] [2022-11-03 03:40:06,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509311677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:06,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:06,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:40:06,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603881797] [2022-11-03 03:40:06,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:06,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:40:06,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:06,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:40:06,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:40:06,473 INFO L87 Difference]: Start difference. First operand 12885 states and 18606 transitions. 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 03:40:10,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:40:11,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:11,519 INFO L93 Difference]: Finished difference Result 35000 states and 50644 transitions. [2022-11-03 03:40:11,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:40:11,520 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 111 [2022-11-03 03:40:11,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:11,665 INFO L225 Difference]: With dead ends: 35000 [2022-11-03 03:40:11,665 INFO L226 Difference]: Without dead ends: 22132 [2022-11-03 03:40:11,738 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 [2022-11-03 03:40:11,742 INFO L413 NwaCegarLoop]: 2533 mSDtfsCounter, 2033 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 4535 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:11,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2033 Valid, 4535 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 505 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-11-03 03:40:11,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22132 states. [2022-11-03 03:40:13,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22132 to 22070. [2022-11-03 03:40:13,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22070 states, 12729 states have (on average 1.284939901013434) internal successors, (16356), 13391 states have internal predecessors, (16356), 7755 states have call successors, (7755), 1654 states have call predecessors, (7755), 1583 states have return successors, (7839), 7348 states have call predecessors, (7839), 7751 states have call successors, (7839) [2022-11-03 03:40:13,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22070 states to 22070 states and 31950 transitions. [2022-11-03 03:40:13,377 INFO L78 Accepts]: Start accepts. Automaton has 22070 states and 31950 transitions. Word has length 111 [2022-11-03 03:40:13,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:13,378 INFO L495 AbstractCegarLoop]: Abstraction has 22070 states and 31950 transitions. [2022-11-03 03:40:13,378 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 03:40:13,378 INFO L276 IsEmpty]: Start isEmpty. Operand 22070 states and 31950 transitions. [2022-11-03 03:40:13,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-03 03:40:13,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:13,380 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 8, 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] [2022-11-03 03:40:13,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:40:13,381 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:40:13,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:13,381 INFO L85 PathProgramCache]: Analyzing trace with hash 425825568, now seen corresponding path program 1 times [2022-11-03 03:40:13,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:13,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471162173] [2022-11-03 03:40:13,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:13,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:13,634 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-11-03 03:40:13,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:13,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471162173] [2022-11-03 03:40:13,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471162173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:13,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:13,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:40:13,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762757522] [2022-11-03 03:40:13,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:13,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:40:13,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:13,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:40:13,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:40:13,637 INFO L87 Difference]: Start difference. First operand 22070 states and 31950 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 03:40:16,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:40:19,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:19,317 INFO L93 Difference]: Finished difference Result 64370 states and 93212 transitions. [2022-11-03 03:40:19,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:40:19,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 121 [2022-11-03 03:40:19,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:19,767 INFO L225 Difference]: With dead ends: 64370 [2022-11-03 03:40:19,767 INFO L226 Difference]: Without dead ends: 42317 [2022-11-03 03:40:19,886 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 [2022-11-03 03:40:19,887 INFO L413 NwaCegarLoop]: 3054 mSDtfsCounter, 2215 mSDsluCounter, 2247 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2215 SdHoareTripleChecker+Valid, 5060 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:19,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2215 Valid, 5060 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-03 03:40:19,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42317 states. [2022-11-03 03:40:22,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42317 to 42243. [2022-11-03 03:40:22,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42243 states, 24364 states have (on average 1.2850106714825151) internal successors, (31308), 25670 states have internal predecessors, (31308), 14837 states have call successors, (14837), 3180 states have call predecessors, (14837), 3039 states have return successors, (15009), 14008 states have call predecessors, (15009), 14833 states have call successors, (15009) [2022-11-03 03:40:23,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42243 states to 42243 states and 61154 transitions. [2022-11-03 03:40:23,047 INFO L78 Accepts]: Start accepts. Automaton has 42243 states and 61154 transitions. Word has length 121 [2022-11-03 03:40:23,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:23,048 INFO L495 AbstractCegarLoop]: Abstraction has 42243 states and 61154 transitions. [2022-11-03 03:40:23,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 03:40:23,048 INFO L276 IsEmpty]: Start isEmpty. Operand 42243 states and 61154 transitions. [2022-11-03 03:40:23,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-03 03:40:23,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:23,052 INFO L195 NwaCegarLoop]: trace histogram [11, 8, 8, 8, 8, 8, 8, 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] [2022-11-03 03:40:23,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:40:23,052 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)] === [2022-11-03 03:40:23,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:23,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1189055974, now seen corresponding path program 1 times [2022-11-03 03:40:23,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:23,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765850137] [2022-11-03 03:40:23,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:23,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-03 03:40:23,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:23,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765850137] [2022-11-03 03:40:23,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765850137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:23,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:23,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:40:23,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587062441] [2022-11-03 03:40:23,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:23,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:40:23,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:23,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:40:23,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:40:23,247 INFO L87 Difference]: Start difference. First operand 42243 states and 61154 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 03:40:26,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:40:29,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:29,182 INFO L93 Difference]: Finished difference Result 84423 states and 122231 transitions. [2022-11-03 03:40:29,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:40:29,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2022-11-03 03:40:29,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:29,483 INFO L225 Difference]: With dead ends: 84423 [2022-11-03 03:40:29,483 INFO L226 Difference]: Without dead ends: 42243 [2022-11-03 03:40:29,744 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 [2022-11-03 03:40:29,745 INFO L413 NwaCegarLoop]: 2007 mSDtfsCounter, 7 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4004 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:29,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4004 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 493 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-11-03 03:40:29,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42243 states. [2022-11-03 03:40:32,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42243 to 42243. [2022-11-03 03:40:32,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42243 states, 24364 states have (on average 1.2830405516335577) internal successors, (31260), 25670 states have internal predecessors, (31260), 14837 states have call successors, (14837), 3180 states have call predecessors, (14837), 3039 states have return successors, (15009), 14008 states have call predecessors, (15009), 14833 states have call successors, (15009) [2022-11-03 03:40:32,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42243 states to 42243 states and 61106 transitions. [2022-11-03 03:40:32,923 INFO L78 Accepts]: Start accepts. Automaton has 42243 states and 61106 transitions. Word has length 134 [2022-11-03 03:40:32,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:32,924 INFO L495 AbstractCegarLoop]: Abstraction has 42243 states and 61106 transitions. [2022-11-03 03:40:32,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 03:40:32,925 INFO L276 IsEmpty]: Start isEmpty. Operand 42243 states and 61106 transitions. [2022-11-03 03:40:32,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-03 03:40:32,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:32,928 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 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] [2022-11-03 03:40:32,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:40:32,928 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)] === [2022-11-03 03:40:32,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:32,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1663266148, now seen corresponding path program 1 times [2022-11-03 03:40:32,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:32,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015798717] [2022-11-03 03:40:32,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:32,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:33,458 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-11-03 03:40:33,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:33,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015798717] [2022-11-03 03:40:33,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015798717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:33,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:33,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:40:33,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768025065] [2022-11-03 03:40:33,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:33,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:40:33,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:33,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:40:33,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:40:33,462 INFO L87 Difference]: Start difference. First operand 42243 states and 61106 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:40:37,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:40:39,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:40:42,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:42,237 INFO L93 Difference]: Finished difference Result 42249 states and 61111 transitions. [2022-11-03 03:40:42,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:40:42,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 145 [2022-11-03 03:40:42,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:42,460 INFO L225 Difference]: With dead ends: 42249 [2022-11-03 03:40:42,460 INFO L226 Difference]: Without dead ends: 42247 [2022-11-03 03:40:42,485 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 [2022-11-03 03:40:42,485 INFO L413 NwaCegarLoop]: 2004 mSDtfsCounter, 2207 mSDsluCounter, 4490 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2219 SdHoareTripleChecker+Valid, 5998 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:42,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2219 Valid, 5998 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 763 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-03 03:40:42,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42247 states. [2022-11-03 03:40:45,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42247 to 42247. [2022-11-03 03:40:45,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42247 states, 24367 states have (on average 1.2830057044363279) internal successors, (31263), 25673 states have internal predecessors, (31263), 14837 states have call successors, (14837), 3181 states have call predecessors, (14837), 3040 states have return successors, (15009), 14008 states have call predecessors, (15009), 14833 states have call successors, (15009) [2022-11-03 03:40:45,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42247 states to 42247 states and 61109 transitions. [2022-11-03 03:40:45,711 INFO L78 Accepts]: Start accepts. Automaton has 42247 states and 61109 transitions. Word has length 145 [2022-11-03 03:40:45,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:45,712 INFO L495 AbstractCegarLoop]: Abstraction has 42247 states and 61109 transitions. [2022-11-03 03:40:45,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:40:45,713 INFO L276 IsEmpty]: Start isEmpty. Operand 42247 states and 61109 transitions. [2022-11-03 03:40:45,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-03 03:40:45,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:45,716 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:40:45,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:40:45,716 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)] === [2022-11-03 03:40:45,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:45,716 INFO L85 PathProgramCache]: Analyzing trace with hash 296022782, now seen corresponding path program 1 times [2022-11-03 03:40:45,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:45,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998355719] [2022-11-03 03:40:45,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:45,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:46,139 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2022-11-03 03:40:46,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:46,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998355719] [2022-11-03 03:40:46,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998355719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:46,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:46,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:40:46,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944225086] [2022-11-03 03:40:46,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:46,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:40:46,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:46,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:40:46,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:40:46,142 INFO L87 Difference]: Start difference. First operand 42247 states and 61109 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 03:40:51,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:40:54,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:54,122 INFO L93 Difference]: Finished difference Result 42253 states and 61114 transitions. [2022-11-03 03:40:54,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:40:54,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2022-11-03 03:40:54,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:54,325 INFO L225 Difference]: With dead ends: 42253 [2022-11-03 03:40:54,325 INFO L226 Difference]: Without dead ends: 42251 [2022-11-03 03:40:54,344 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 [2022-11-03 03:40:54,345 INFO L413 NwaCegarLoop]: 2007 mSDtfsCounter, 2201 mSDsluCounter, 4490 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2212 SdHoareTripleChecker+Valid, 6001 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:54,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2212 Valid, 6001 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-03 03:40:54,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42251 states. [2022-11-03 03:40:56,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42251 to 42251. [2022-11-03 03:40:56,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42251 states, 24370 states have (on average 1.2829708658186294) internal successors, (31266), 25676 states have internal predecessors, (31266), 14837 states have call successors, (14837), 3182 states have call predecessors, (14837), 3041 states have return successors, (15009), 14008 states have call predecessors, (15009), 14833 states have call successors, (15009) [2022-11-03 03:40:56,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42251 states to 42251 states and 61112 transitions. [2022-11-03 03:40:56,904 INFO L78 Accepts]: Start accepts. Automaton has 42251 states and 61112 transitions. Word has length 155 [2022-11-03 03:40:56,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:56,905 INFO L495 AbstractCegarLoop]: Abstraction has 42251 states and 61112 transitions. [2022-11-03 03:40:56,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 03:40:56,905 INFO L276 IsEmpty]: Start isEmpty. Operand 42251 states and 61112 transitions. [2022-11-03 03:40:56,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-03 03:40:56,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:56,908 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 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] [2022-11-03 03:40:56,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:40:56,909 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)] === [2022-11-03 03:40:56,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:56,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1865931332, now seen corresponding path program 1 times [2022-11-03 03:40:56,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:56,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614248684] [2022-11-03 03:40:56,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:56,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:57,560 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-11-03 03:40:57,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:57,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614248684] [2022-11-03 03:40:57,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614248684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:57,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:57,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:40:57,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583427253] [2022-11-03 03:40:57,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:57,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:40:57,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:57,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:40:57,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:40:57,563 INFO L87 Difference]: Start difference. First operand 42251 states and 61112 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 03:41:01,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:41:02,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:41:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:05,286 INFO L93 Difference]: Finished difference Result 42257 states and 61117 transitions. [2022-11-03 03:41:05,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:41:05,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2022-11-03 03:41:05,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:05,462 INFO L225 Difference]: With dead ends: 42257 [2022-11-03 03:41:05,462 INFO L226 Difference]: Without dead ends: 42255 [2022-11-03 03:41:05,483 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 [2022-11-03 03:41:05,483 INFO L413 NwaCegarLoop]: 2007 mSDtfsCounter, 2202 mSDsluCounter, 4490 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2212 SdHoareTripleChecker+Valid, 6001 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:05,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2212 Valid, 6001 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-03 03:41:05,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42255 states. [2022-11-03 03:41:08,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42255 to 42255. [2022-11-03 03:41:08,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42255 states, 24373 states have (on average 1.2829360357772945) internal successors, (31269), 25679 states have internal predecessors, (31269), 14837 states have call successors, (14837), 3183 states have call predecessors, (14837), 3042 states have return successors, (15009), 14008 states have call predecessors, (15009), 14833 states have call successors, (15009) [2022-11-03 03:41:08,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42255 states to 42255 states and 61115 transitions. [2022-11-03 03:41:08,332 INFO L78 Accepts]: Start accepts. Automaton has 42255 states and 61115 transitions. Word has length 155 [2022-11-03 03:41:08,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:08,333 INFO L495 AbstractCegarLoop]: Abstraction has 42255 states and 61115 transitions. [2022-11-03 03:41:08,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 03:41:08,333 INFO L276 IsEmpty]: Start isEmpty. Operand 42255 states and 61115 transitions. [2022-11-03 03:41:08,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-03 03:41:08,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:08,337 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 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] [2022-11-03 03:41:08,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:41:08,338 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)] === [2022-11-03 03:41:08,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:08,338 INFO L85 PathProgramCache]: Analyzing trace with hash 721117451, now seen corresponding path program 1 times [2022-11-03 03:41:08,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:08,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391323594] [2022-11-03 03:41:08,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:08,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:08,846 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2022-11-03 03:41:08,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:08,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391323594] [2022-11-03 03:41:08,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391323594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:08,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:08,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:41:08,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913942580] [2022-11-03 03:41:08,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:08,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:41:08,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:08,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:41:08,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:41:08,850 INFO L87 Difference]: Start difference. First operand 42255 states and 61115 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 03:41:12,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:41:14,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:41:18,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:18,181 INFO L93 Difference]: Finished difference Result 42261 states and 61120 transitions. [2022-11-03 03:41:18,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:41:18,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 164 [2022-11-03 03:41:18,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:18,346 INFO L225 Difference]: With dead ends: 42261 [2022-11-03 03:41:18,347 INFO L226 Difference]: Without dead ends: 42259 [2022-11-03 03:41:18,365 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 [2022-11-03 03:41:18,365 INFO L413 NwaCegarLoop]: 2007 mSDtfsCounter, 2201 mSDsluCounter, 4490 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2210 SdHoareTripleChecker+Valid, 6001 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:18,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2210 Valid, 6001 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 763 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-11-03 03:41:18,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42259 states. [2022-11-03 03:41:21,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42259 to 42259. [2022-11-03 03:41:21,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42259 states, 24376 states have (on average 1.2829012143091565) internal successors, (31272), 25682 states have internal predecessors, (31272), 14837 states have call successors, (14837), 3184 states have call predecessors, (14837), 3043 states have return successors, (15009), 14008 states have call predecessors, (15009), 14833 states have call successors, (15009) [2022-11-03 03:41:21,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42259 states to 42259 states and 61118 transitions. [2022-11-03 03:41:21,596 INFO L78 Accepts]: Start accepts. Automaton has 42259 states and 61118 transitions. Word has length 164 [2022-11-03 03:41:21,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:21,597 INFO L495 AbstractCegarLoop]: Abstraction has 42259 states and 61118 transitions. [2022-11-03 03:41:21,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 03:41:21,597 INFO L276 IsEmpty]: Start isEmpty. Operand 42259 states and 61118 transitions. [2022-11-03 03:41:21,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-03 03:41:21,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:21,601 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:41:21,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:41:21,601 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:41:21,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:21,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1397185769, now seen corresponding path program 1 times [2022-11-03 03:41:21,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:21,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634545297] [2022-11-03 03:41:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:21,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:21,811 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-11-03 03:41:21,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:21,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634545297] [2022-11-03 03:41:21,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634545297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:21,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:21,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:41:21,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471989825] [2022-11-03 03:41:21,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:21,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:41:21,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:21,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:41:21,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:41:21,814 INFO L87 Difference]: Start difference. First operand 42259 states and 61118 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 03:41:25,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []