./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-intel-e1000-e1000.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-e1000-e1000.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/bin/utaipan-Q6hlc19bkW --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 fb66474e5e41b459479f6d5b414154fee660232663143da1bc936d3f2a0049ad --- 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-4e7fbc6 [2022-11-23 13:54:42,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:54:42,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:54:42,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:54:42,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:54:42,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:54:42,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:54:42,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:54:42,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:54:42,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:54:42,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:54:42,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:54:42,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:54:42,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:54:42,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:54:42,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:54:42,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:54:42,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:54:42,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:54:42,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:54:42,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:54:42,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:54:42,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:54:42,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:54:42,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:54:42,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:54:42,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:54:42,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:54:42,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:54:42,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:54:42,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:54:42,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:54:42,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:54:42,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:54:42,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:54:42,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:54:42,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:54:42,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:54:42,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:54:42,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:54:42,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:54:42,921 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 13:54:42,970 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:54:42,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:54:42,971 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:54:42,971 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:54:42,972 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:54:42,972 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:54:42,972 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:54:42,973 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:54:42,973 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:54:42,973 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:54:42,974 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:54:42,974 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:54:42,974 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:54:42,975 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:54:42,975 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:54:42,975 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:54:42,975 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:54:42,975 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:54:42,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:54:42,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:54:42,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:54:42,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:54:42,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:54:42,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:54:42,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:54:42,978 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:54:42,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:54:42,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:54:42,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:54:42,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:54:42,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:54:42,979 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:54:42,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:54:42,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:54:42,980 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:54:42,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:54:42,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:54:42,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:54:42,981 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_d9a84254-5696-4fdc-bf2b-eda827edee7d/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb66474e5e41b459479f6d5b414154fee660232663143da1bc936d3f2a0049ad [2022-11-23 13:54:43,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:54:43,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:54:43,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:54:43,281 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:54:43,283 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:54:43,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-e1000-e1000.cil.i [2022-11-23 13:54:46,367 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:54:47,416 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:54:47,417 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-e1000-e1000.cil.i [2022-11-23 13:54:47,520 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/bin/utaipan-Q6hlc19bkW/data/34bf543a7/64c7e4bea8ff44b58ccbaaadc7eb0f2e/FLAGaa49edc52 [2022-11-23 13:54:47,538 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/bin/utaipan-Q6hlc19bkW/data/34bf543a7/64c7e4bea8ff44b58ccbaaadc7eb0f2e [2022-11-23 13:54:47,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:54:47,545 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:54:47,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:54:47,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:54:47,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:54:47,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:54:47" (1/1) ... [2022-11-23 13:54:47,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c1ee577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:47, skipping insertion in model container [2022-11-23 13:54:47,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:54:47" (1/1) ... [2022-11-23 13:54:47,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:54:48,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:54:57,766 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-e1000-e1000.cil.i[947955,947968] [2022-11-23 13:54:57,770 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-e1000-e1000.cil.i[948124,948137] [2022-11-23 13:54:57,771 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-e1000-e1000.cil.i[948291,948304] [2022-11-23 13:54:57,772 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-e1000-e1000.cil.i[948459,948472] [2022-11-23 13:54:57,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:54:57,906 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:54:59,006 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-e1000-e1000.cil.i[947955,947968] [2022-11-23 13:54:59,007 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-e1000-e1000.cil.i[948124,948137] [2022-11-23 13:54:59,008 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-e1000-e1000.cil.i[948291,948304] [2022-11-23 13:54:59,009 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-e1000-e1000.cil.i[948459,948472] [2022-11-23 13:54:59,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:54:59,478 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:54:59,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:59 WrapperNode [2022-11-23 13:54:59,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:54:59,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:54:59,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:54:59,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:54:59,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:59" (1/1) ... [2022-11-23 13:55:00,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:59" (1/1) ... [2022-11-23 13:55:00,937 INFO L138 Inliner]: procedures = 870, calls = 16507, calls flagged for inlining = 430, calls inlined = 363, statements flattened = 28673 [2022-11-23 13:55:00,938 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:55:00,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:55:00,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:55:00,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:55:00,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:59" (1/1) ... [2022-11-23 13:55:00,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:59" (1/1) ... [2022-11-23 13:55:01,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:59" (1/1) ... [2022-11-23 13:55:01,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:59" (1/1) ... [2022-11-23 13:55:02,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:59" (1/1) ... [2022-11-23 13:55:02,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:59" (1/1) ... [2022-11-23 13:55:02,537 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:59" (1/1) ... [2022-11-23 13:55:02,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:59" (1/1) ... [2022-11-23 13:55:02,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:55:02,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:55:02,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:55:02,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:55:02,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:59" (1/1) ... [2022-11-23 13:55:02,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:55:02,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:55:02,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:55:03,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a84254-5696-4fdc-bf2b-eda827edee7d/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:55:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_fc_after_link_up [2022-11-23 13:55:03,050 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_fc_after_link_up [2022-11-23 13:55:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2022-11-23 13:55:03,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2022-11-23 13:55:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_collision_dist [2022-11-23 13:55:03,051 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_collision_dist [2022-11-23 13:55:03,051 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_ee_clk [2022-11-23 13:55:03,051 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_ee_clk [2022-11-23 13:55:03,051 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2022-11-23 13:55:03,051 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2022-11-23 13:55:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2022-11-23 13:55:03,052 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2022-11-23 13:55:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure reg_pattern_test [2022-11-23 13:55:03,052 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_pattern_test [2022-11-23 13:55:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-23 13:55:03,052 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-23 13:55:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-23 13:55:03,053 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-23 13:55:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 13:55:03,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 13:55:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_unmap_and_free_tx_resource [2022-11-23 13:55:03,054 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_unmap_and_free_tx_resource [2022-11-23 13:55:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 13:55:03,055 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 13:55:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 13:55:03,055 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 13:55:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_rctl [2022-11-23 13:55:03,056 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_rctl [2022-11-23 13:55:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-23 13:55:03,056 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-23 13:55:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2022-11-23 13:55:03,057 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2022-11-23 13:55:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset [2022-11-23 13:55:03,057 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset [2022-11-23 13:55:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2022-11-23 13:55:03,057 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2022-11-23 13:55:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-23 13:55:03,057 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-23 13:55:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-23 13:55:03,058 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-23 13:55:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 13:55:03,058 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 13:55:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-23 13:55:03,059 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-23 13:55:03,059 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg [2022-11-23 13:55:03,059 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg [2022-11-23 13:55:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_speed_and_duplex [2022-11-23 13:55:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_speed_and_duplex [2022-11-23 13:55:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_bit [2022-11-23 13:55:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_bit [2022-11-23 13:55:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-23 13:55:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-23 13:55:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 13:55:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 13:55:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 13:55:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 13:55:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link [2022-11-23 13:55:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link [2022-11-23 13:55:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_irq [2022-11-23 13:55:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_irq [2022-11-23 13:55:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2022-11-23 13:55:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2022-11-23 13:55:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_vlan_mode [2022-11-23 13:55:03,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_vlan_mode [2022-11-23 13:55:03,063 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 13:55:03,063 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 13:55:03,063 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_dsp_after_link_change [2022-11-23 13:55:03,064 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_dsp_after_link_change [2022-11-23 13:55:03,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 13:55:03,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 13:55:03,065 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_maybe_stop_tx [2022-11-23 13:55:03,065 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_maybe_stop_tx [2022-11-23 13:55:03,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 13:55:03,066 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2022-11-23 13:55:03,066 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2022-11-23 13:55:03,067 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_used [2022-11-23 13:55:03,067 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_used [2022-11-23 13:55:03,067 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_force_mac_fc [2022-11-23 13:55:03,067 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_force_mac_fc [2022-11-23 13:55:03,067 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-23 13:55:03,067 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-23 13:55:03,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-23 13:55:03,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-23 13:55:03,068 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_leave_82542_rst [2022-11-23 13:55:03,068 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_leave_82542_rst [2022-11-23 13:55:03,068 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 13:55:03,069 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 13:55:03,069 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_tx_resources [2022-11-23 13:55:03,069 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_tx_resources [2022-11-23 13:55:03,069 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2022-11-23 13:55:03,069 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2022-11-23 13:55:03,070 INFO L130 BoogieDeclarations]: Found specification of procedure reg_set_and_check [2022-11-23 13:55:03,070 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_set_and_check [2022-11-23 13:55:03,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-23 13:55:03,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-23 13:55:03,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 13:55:03,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 13:55:03,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 13:55:03,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 13:55:03,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 13:55:03,071 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_netpoll [2022-11-23 13:55:03,071 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_netpoll [2022-11-23 13:55:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:55:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 13:55:03,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 13:55:03,077 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 13:55:03,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 13:55:03,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 13:55:03,078 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_rx_mode [2022-11-23 13:55:03,078 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_rx_mode [2022-11-23 13:55:03,078 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 13:55:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-11-23 13:55:03,080 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-11-23 13:55:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_hw_reset [2022-11-23 13:55:03,086 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_hw_reset [2022-11-23 13:55:03,086 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-23 13:55:03,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-23 13:55:03,086 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_ee_bits [2022-11-23 13:55:03,086 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_ee_bits [2022-11-23 13:55:03,087 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 13:55:03,087 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 13:55:03,087 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_ee_clk [2022-11-23 13:55:03,087 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_ee_clk [2022-11-23 13:55:03,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-23 13:55:03,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-23 13:55:03,087 INFO L130 BoogieDeclarations]: Found specification of procedure device_can_wakeup [2022-11-23 13:55:03,088 INFO L138 BoogieDeclarations]: Found implementation of procedure device_can_wakeup [2022-11-23 13:55:03,088 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_selected_regions [2022-11-23 13:55:03,088 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_selected_regions [2022-11-23 13:55:03,088 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 13:55:03,088 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 13:55:03,088 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom [2022-11-23 13:55:03,088 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom [2022-11-23 13:55:03,089 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_enter_82542_rst [2022-11-23 13:55:03,089 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_enter_82542_rst [2022-11-23 13:55:03,089 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-23 13:55:03,089 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-23 13:55:03,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:55:03,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:55:03,089 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_down_phy [2022-11-23 13:55:03,090 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_down_phy [2022-11-23 13:55:03,090 INFO L130 BoogieDeclarations]: Found specification of procedure pci_select_bars [2022-11-23 13:55:03,090 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_select_bars [2022-11-23 13:55:03,090 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_spi_eeprom_ready [2022-11-23 13:55:03,090 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_spi_eeprom_ready [2022-11-23 13:55:03,090 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_clear_mwi [2022-11-23 13:55:03,090 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_clear_mwi [2022-11-23 13:55:03,091 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-23 13:55:03,091 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-23 13:55:03,091 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_up_phy [2022-11-23 13:55:03,091 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_up_phy [2022-11-23 13:55:03,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 13:55:03,091 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-23 13:55:03,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-23 13:55:03,091 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg_ex [2022-11-23 13:55:03,092 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg_ex [2022-11-23 13:55:03,092 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-23 13:55:03,092 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-23 13:55:03,092 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-23 13:55:03,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-23 13:55:03,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-23 13:55:03,093 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_resume [2022-11-23 13:55:03,093 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_resume [2022-11-23 13:55:03,093 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2022-11-23 13:55:03,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2022-11-23 13:55:03,093 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-23 13:55:03,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-23 13:55:03,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 13:55:03,094 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 13:55:03,094 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_mdi_clk [2022-11-23 13:55:03,094 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_mdi_clk [2022-11-23 13:55:03,094 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_mac_to_phy [2022-11-23 13:55:03,094 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_mac_to_phy [2022-11-23 13:55:03,094 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2022-11-23 13:55:03,095 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2022-11-23 13:55:03,095 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-23 13:55:03,095 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-23 13:55:03,095 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset_clk_and_crs [2022-11-23 13:55:03,095 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset_clk_and_crs [2022-11-23 13:55:03,095 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-23 13:55:03,095 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-23 13:55:03,095 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-23 13:55:03,096 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-23 13:55:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:55:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 13:55:03,096 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 13:55:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_regs_len [2022-11-23 13:55:03,096 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_regs_len [2022-11-23 13:55:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 13:55:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2022-11-23 13:55:03,097 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2022-11-23 13:55:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_tx_resources [2022-11-23 13:55:03,097 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_tx_resources [2022-11-23 13:55:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_setup_autoneg [2022-11-23 13:55:03,097 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_setup_autoneg [2022-11-23 13:55:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_mng_vlan [2022-11-23 13:55:03,098 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_mng_vlan [2022-11-23 13:55:03,098 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_filter_on_off [2022-11-23 13:55:03,098 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_filter_on_off [2022-11-23 13:55:03,098 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-23 13:55:03,098 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-23 13:55:03,098 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_nway_reset [2022-11-23 13:55:03,098 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_nway_reset [2022-11-23 13:55:03,098 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 13:55:03,099 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 13:55:03,099 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-23 13:55:03,099 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-23 13:55:03,099 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_all_rx_rings [2022-11-23 13:55:03,099 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_all_rx_rings [2022-11-23 13:55:03,099 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reinit_locked [2022-11-23 13:55:03,099 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reinit_locked [2022-11-23 13:55:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2022-11-23 13:55:03,100 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2022-11-23 13:55:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_phy_reg [2022-11-23 13:55:03,100 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_phy_reg [2022-11-23 13:55:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_rx_resources [2022-11-23 13:55:03,100 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_rx_resources [2022-11-23 13:55:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-23 13:55:03,100 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-23 13:55:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_copper_link_rtl_setup [2022-11-23 13:55:03,101 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_copper_link_rtl_setup [2022-11-23 13:55:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_desc_rings [2022-11-23 13:55:03,101 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_desc_rings [2022-11-23 13:55:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2022-11-23 13:55:03,101 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2022-11-23 13:55:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 13:55:03,102 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 13:55:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 13:55:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_64k_bound [2022-11-23 13:55:03,102 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_64k_bound [2022-11-23 13:55:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 13:55:03,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 13:55:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_88 [2022-11-23 13:55:03,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_88 [2022-11-23 13:55:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_request_irq [2022-11-23 13:55:03,107 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_request_irq [2022-11-23 13:55:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-23 13:55:03,108 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-23 13:55:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_eeprom [2022-11-23 13:55:03,108 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_eeprom [2022-11-23 13:55:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw [2022-11-23 13:55:03,109 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw [2022-11-23 13:55:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_disable [2022-11-23 13:55:03,110 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_disable [2022-11-23 13:55:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2022-11-23 13:55:03,111 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2022-11-23 13:55:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_tx_ring [2022-11-23 13:55:03,111 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_tx_ring [2022-11-23 13:55:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-23 13:55:03,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-23 13:55:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_manageability [2022-11-23 13:55:03,112 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_manageability [2022-11-23 13:55:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-23 13:55:03,112 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-23 13:55:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-23 13:55:03,112 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-23 13:55:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-23 13:55:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-23 13:55:03,112 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-23 13:55:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_rx_ring [2022-11-23 13:55:03,113 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_rx_ring [2022-11-23 13:55:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-23 13:55:03,113 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-23 13:55:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_91 [2022-11-23 13:55:03,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_91 [2022-11-23 13:55:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 13:55:03,113 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 13:55:03,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_82 [2022-11-23 13:55:03,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_82 [2022-11-23 13:55:03,114 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-23 13:55:03,114 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-23 13:55:03,114 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_eeprom [2022-11-23 13:55:03,114 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_eeprom [2022-11-23 13:55:03,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 13:55:03,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 13:55:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_manageability [2022-11-23 13:55:03,115 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_manageability [2022-11-23 13:55:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_in_ee_bits [2022-11-23 13:55:03,115 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_in_ee_bits [2022-11-23 13:55:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down_and_stop [2022-11-23 13:55:03,115 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down_and_stop [2022-11-23 13:55:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-23 13:55:03,116 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-23 13:55:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2022-11-23 13:55:03,116 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2022-11-23 13:55:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2022-11-23 13:55:03,116 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2022-11-23 13:55:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-23 13:55:03,116 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-23 13:55:03,117 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_get_info [2022-11-23 13:55:03,117 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_get_info [2022-11-23 13:55:03,117 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_do_read_eeprom [2022-11-23 13:55:03,117 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_do_read_eeprom [2022-11-23 13:55:03,117 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set [2022-11-23 13:55:03,117 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set [2022-11-23 13:55:03,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_83 [2022-11-23 13:55:03,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_83 [2022-11-23 13:55:03,118 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_eeprom_params [2022-11-23 13:55:03,118 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_eeprom_params [2022-11-23 13:55:03,118 INFO L130 BoogieDeclarations]: Found specification of procedure phys_to_virt [2022-11-23 13:55:03,118 INFO L138 BoogieDeclarations]: Found implementation of procedure phys_to_virt [2022-11-23 13:55:03,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 13:55:03,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 13:55:03,118 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-23 13:55:03,118 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-23 13:55:03,119 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 13:55:03,119 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 13:55:03,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 13:55:03,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 13:55:03,119 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-23 13:55:03,119 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-23 13:55:03,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:55:03,119 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_standby_eeprom [2022-11-23 13:55:03,120 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_standby_eeprom [2022-11-23 13:55:03,120 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure_rx [2022-11-23 13:55:03,120 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure_rx [2022-11-23 13:55:03,120 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_hw_dev [2022-11-23 13:55:03,120 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_hw_dev [2022-11-23 13:55:03,120 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_stats [2022-11-23 13:55:03,120 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_stats [2022-11-23 13:55:03,120 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_validate_option [2022-11-23 13:55:03,121 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_validate_option [2022-11-23 13:55:03,121 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 13:55:03,121 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 13:55:03,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 13:55:03,121 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_link [2022-11-23 13:55:03,121 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_link [2022-11-23 13:55:03,121 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset [2022-11-23 13:55:03,121 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset [2022-11-23 13:55:03,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 13:55:03,122 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 13:55:03,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 13:55:03,122 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shutdown [2022-11-23 13:55:03,122 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shutdown [2022-11-23 13:55:03,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 13:55:03,122 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 13:55:03,122 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_disable_receiver [2022-11-23 13:55:03,123 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_disable_receiver [2022-11-23 13:55:03,123 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_kill_vid [2022-11-23 13:55:03,123 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_kill_vid [2022-11-23 13:55:03,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-23 13:55:03,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-23 13:55:03,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 13:55:03,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 13:55:03,123 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-11-23 13:55:03,124 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-11-23 13:55:03,124 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_has_link [2022-11-23 13:55:03,124 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_has_link [2022-11-23 13:55:03,124 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-23 13:55:03,124 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-23 13:55:03,124 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2022-11-23 13:55:03,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2022-11-23 13:55:03,125 INFO L130 BoogieDeclarations]: Found specification of procedure pci_wake_from_d3 [2022-11-23 13:55:03,125 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_wake_from_d3 [2022-11-23 13:55:03,125 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-23 13:55:03,125 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-23 13:55:03,125 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-23 13:55:03,125 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-23 13:55:03,125 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 13:55:03,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 13:55:03,126 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_open [2022-11-23 13:55:03,126 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_open [2022-11-23 13:55:03,126 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2022-11-23 13:55:03,126 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2022-11-23 13:55:03,126 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_vfta [2022-11-23 13:55:03,126 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_vfta [2022-11-23 13:55:03,126 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_remove [2022-11-23 13:55:03,126 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_remove [2022-11-23 13:55:03,127 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure [2022-11-23 13:55:03,128 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure [2022-11-23 13:55:03,128 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-23 13:55:03,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-23 13:55:03,128 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-23 13:55:03,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-23 13:55:03,128 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-23 13:55:03,128 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-23 13:55:03,129 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_cable_length [2022-11-23 13:55:03,129 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_cable_length [2022-11-23 13:55:03,129 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-23 13:55:03,129 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-23 13:55:03,129 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_rx_resources [2022-11-23 13:55:03,129 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_rx_resources [2022-11-23 13:55:03,129 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_add_vid [2022-11-23 13:55:03,129 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_add_vid [2022-11-23 13:55:03,130 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-11-23 13:55:03,130 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-11-23 13:55:03,130 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_write [2022-11-23 13:55:03,130 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_write [2022-11-23 13:55:03,130 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2022-11-23 13:55:03,130 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2022-11-23 13:55:03,130 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_resume [2022-11-23 13:55:03,130 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_resume [2022-11-23 13:55:03,131 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-23 13:55:03,131 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-23 13:55:03,131 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_acquire_eeprom [2022-11-23 13:55:03,131 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_acquire_eeprom [2022-11-23 13:55:03,131 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-23 13:55:03,131 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-23 13:55:03,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 13:55:03,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 13:55:03,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 13:55:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2022-11-23 13:55:03,132 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2022-11-23 13:55:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 13:55:03,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 13:55:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-23 13:55:03,132 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-23 13:55:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-23 13:55:03,133 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-23 13:55:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_polarity [2022-11-23 13:55:03,133 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_polarity [2022-11-23 13:55:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-23 13:55:03,133 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-23 13:55:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-23 13:55:03,133 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-23 13:55:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom_len [2022-11-23 13:55:03,134 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom_len [2022-11-23 13:55:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 13:55:03,134 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 13:55:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_rx_resources [2022-11-23 13:55:03,134 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_rx_resources [2022-11-23 13:55:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2022-11-23 13:55:03,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2022-11-23 13:55:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_close [2022-11-23 13:55:03,135 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_close [2022-11-23 13:55:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 13:55:03,135 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 13:55:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-23 13:55:03,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-23 13:55:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-23 13:55:03,136 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-23 13:55:03,136 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-23 13:55:03,136 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-23 13:55:03,136 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-23 13:55:03,136 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-23 13:55:03,136 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2022-11-23 13:55:03,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2022-11-23 13:55:03,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 13:55:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_media_type [2022-11-23 13:55:03,137 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_media_type [2022-11-23 13:55:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_eeprom [2022-11-23 13:55:03,137 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_eeprom [2022-11-23 13:55:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_phy_loopback [2022-11-23 13:55:03,137 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_phy_loopback [2022-11-23 13:55:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-23 13:55:03,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-23 13:55:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 13:55:03,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 13:55:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-23 13:55:03,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-23 13:55:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_enable [2022-11-23 13:55:03,138 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_enable [2022-11-23 13:55:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_up [2022-11-23 13:55:03,138 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_up [2022-11-23 13:55:03,139 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_tx_timeout [2022-11-23 13:55:03,139 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_tx_timeout [2022-11-23 13:55:03,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_87 [2022-11-23 13:55:03,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_87 [2022-11-23 13:55:03,139 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_mdi_clk [2022-11-23 13:55:03,139 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_mdi_clk [2022-11-23 13:55:03,139 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-23 13:55:03,139 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-23 13:55:03,140 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 13:55:03,140 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 13:55:03,140 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2022-11-23 13:55:03,140 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2022-11-23 13:55:03,140 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_eeprom [2022-11-23 13:55:03,140 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_eeprom [2022-11-23 13:55:03,140 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_set_mwi [2022-11-23 13:55:03,141 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_set_mwi [2022-11-23 13:55:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_stats_lock_of_e1000_adapter [2022-11-23 13:55:03,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_stats_lock_of_e1000_adapter [2022-11-23 13:55:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_polarity_reversal_workaround [2022-11-23 13:55:03,145 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_polarity_reversal_workaround [2022-11-23 13:55:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-23 13:55:03,145 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-23 13:55:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-11-23 13:55:03,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-11-23 13:55:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 13:55:03,145 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 13:55:03,146 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_link_test [2022-11-23 13:55:03,146 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_link_test [2022-11-23 13:55:03,146 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_mdi_bits [2022-11-23 13:55:03,146 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_mdi_bits [2022-11-23 13:55:03,146 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_spd_dplx [2022-11-23 13:55:03,146 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_spd_dplx [2022-11-23 13:55:03,146 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2022-11-23 13:55:03,146 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2022-11-23 13:55:03,147 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down [2022-11-23 13:55:03,147 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down [2022-11-23 13:55:03,147 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-23 13:55:03,147 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-23 13:55:03,147 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_init_script [2022-11-23 13:55:03,147 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_init_script [2022-11-23 13:55:03,147 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-23 13:55:03,148 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-23 13:55:03,148 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2022-11-23 13:55:03,148 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2022-11-23 13:55:03,148 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-23 13:55:03,148 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-23 13:55:03,148 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_shutdown [2022-11-23 13:55:03,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_shutdown [2022-11-23 13:55:03,148 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_tx_resources [2022-11-23 13:55:03,149 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_tx_resources [2022-11-23 13:55:03,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 13:55:03,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 13:55:03,149 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-23 13:55:03,149 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-23 13:55:03,149 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-23 13:55:03,149 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-23 13:55:03,150 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2022-11-23 13:55:03,150 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2022-11-23 13:55:03,150 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_wol_exclusion [2022-11-23 13:55:03,150 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_wol_exclusion [2022-11-23 13:55:03,150 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 13:55:03,150 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 13:55:03,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_e1000_exit_module_13_2 [2022-11-23 13:55:03,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_e1000_exit_module_13_2 [2022-11-23 13:55:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-23 13:55:03,151 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-23 13:55:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_e1000_phy_lock [2022-11-23 13:55:03,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_e1000_phy_lock [2022-11-23 13:55:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:55:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 13:55:03,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 13:55:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-23 13:55:05,542 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:55:05,547 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:55:07,180 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 13:56:07,608 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 13:56:08,116 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:56:15,675 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:56:15,676 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-23 13:56:15,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:56:15 BoogieIcfgContainer [2022-11-23 13:56:15,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:56:15,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:56:15,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:56:15,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:56:15,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:54:47" (1/3) ... [2022-11-23 13:56:15,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a58a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:56:15, skipping insertion in model container [2022-11-23 13:56:15,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:59" (2/3) ... [2022-11-23 13:56:15,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a58a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:56:15, skipping insertion in model container [2022-11-23 13:56:15,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:56:15" (3/3) ... [2022-11-23 13:56:15,699 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-e1000-e1000.cil.i [2022-11-23 13:56:15,721 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:56:15,722 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-23 13:56:15,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:56:15,916 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;@7b7a6bcd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:56:15,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-23 13:56:15,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 6787 states, 4327 states have (on average 1.3413450427547955) internal successors, (5804), 4421 states have internal predecessors, (5804), 2207 states have call successors, (2207), 253 states have call predecessors, (2207), 252 states have return successors, (2201), 2193 states have call predecessors, (2201), 2201 states have call successors, (2201) [2022-11-23 13:56:15,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-11-23 13:56:15,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:56:15,986 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:56:15,986 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)] === [2022-11-23 13:56:15,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:56:15,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1147139161, now seen corresponding path program 1 times [2022-11-23 13:56:16,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:56:16,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603896259] [2022-11-23 13:56:16,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:16,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:56:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:56:18,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2070 trivial. 0 not checked. [2022-11-23 13:56:18,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:56:18,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603896259] [2022-11-23 13:56:18,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603896259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:56:18,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:56:18,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:56:18,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290614853] [2022-11-23 13:56:18,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:56:18,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:56:18,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:56:18,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:56:18,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:56:18,536 INFO L87 Difference]: Start difference. First operand has 6787 states, 4327 states have (on average 1.3413450427547955) internal successors, (5804), 4421 states have internal predecessors, (5804), 2207 states have call successors, (2207), 253 states have call predecessors, (2207), 252 states have return successors, (2201), 2193 states have call predecessors, (2201), 2201 states have call successors, (2201) Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-23 13:56:26,678 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 [] [2022-11-23 13:56:35,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:56:39,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:56:41,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:56:43,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:56:44,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:56:44,278 INFO L93 Difference]: Finished difference Result 19745 states and 30421 transitions. [2022-11-23 13:56:44,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:56:44,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 251 [2022-11-23 13:56:44,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:56:44,401 INFO L225 Difference]: With dead ends: 19745 [2022-11-23 13:56:44,402 INFO L226 Difference]: Without dead ends: 12995 [2022-11-23 13:56:44,551 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 [2022-11-23 13:56:44,557 INFO L413 NwaCegarLoop]: 11412 mSDtfsCounter, 9350 mSDsluCounter, 9334 mSDsCounter, 0 mSdLazyCounter, 1656 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9351 SdHoareTripleChecker+Valid, 20746 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1656 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.6s IncrementalHoareTripleChecker+Time [2022-11-23 13:56:44,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9351 Valid, 20746 Invalid, 1666 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1656 Invalid, 3 Unknown, 0 Unchecked, 24.6s Time] [2022-11-23 13:56:44,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12995 states. [2022-11-23 13:56:45,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12995 to 12983. [2022-11-23 13:56:45,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12983 states, 8249 states have (on average 1.3353133713177354) internal successors, (11015), 8431 states have internal predecessors, (11015), 4237 states have call successors, (4237), 495 states have call predecessors, (4237), 494 states have return successors, (4234), 4217 states have call predecessors, (4234), 4233 states have call successors, (4234) [2022-11-23 13:56:46,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12983 states to 12983 states and 19486 transitions. [2022-11-23 13:56:46,131 INFO L78 Accepts]: Start accepts. Automaton has 12983 states and 19486 transitions. Word has length 251 [2022-11-23 13:56:46,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:56:46,137 INFO L495 AbstractCegarLoop]: Abstraction has 12983 states and 19486 transitions. [2022-11-23 13:56:46,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-23 13:56:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 12983 states and 19486 transitions. [2022-11-23 13:56:46,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-11-23 13:56:46,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:56:46,157 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:56:46,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:56:46,158 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)] === [2022-11-23 13:56:46,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:56:46,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1462765320, now seen corresponding path program 1 times [2022-11-23 13:56:46,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:56:46,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903260422] [2022-11-23 13:56:46,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:46,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:56:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:56:47,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2073 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2073 trivial. 0 not checked. [2022-11-23 13:56:47,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:56:47,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903260422] [2022-11-23 13:56:47,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903260422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:56:47,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:56:47,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:56:47,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026887354] [2022-11-23 13:56:47,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:56:47,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:56:47,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:56:47,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:56:47,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:56:47,704 INFO L87 Difference]: Start difference. First operand 12983 states and 19486 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-23 13:56:51,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:05,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:06,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:08,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:13,344 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 [] [2022-11-23 13:57:13,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:13,898 INFO L93 Difference]: Finished difference Result 28386 states and 42468 transitions. [2022-11-23 13:57:13,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:57:13,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 277 [2022-11-23 13:57:13,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:13,997 INFO L225 Difference]: With dead ends: 28386 [2022-11-23 13:57:13,997 INFO L226 Difference]: Without dead ends: 15450 [2022-11-23 13:57:14,064 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 [2022-11-23 13:57:14,065 INFO L413 NwaCegarLoop]: 12784 mSDtfsCounter, 6496 mSDsluCounter, 9251 mSDsCounter, 0 mSdLazyCounter, 1806 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6496 SdHoareTripleChecker+Valid, 22035 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1806 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:14,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6496 Valid, 22035 Invalid, 1817 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1806 Invalid, 4 Unknown, 0 Unchecked, 25.4s Time] [2022-11-23 13:57:14,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15450 states. [2022-11-23 13:57:15,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15450 to 15412. [2022-11-23 13:57:15,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15412 states, 9772 states have (on average 1.3286942284076955) internal successors, (12984), 9974 states have internal predecessors, (12984), 5003 states have call successors, (5003), 636 states have call predecessors, (5003), 634 states have return successors, (4999), 4982 states have call predecessors, (4999), 4999 states have call successors, (4999) [2022-11-23 13:57:15,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15412 states to 15412 states and 22986 transitions. [2022-11-23 13:57:15,365 INFO L78 Accepts]: Start accepts. Automaton has 15412 states and 22986 transitions. Word has length 277 [2022-11-23 13:57:15,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:15,367 INFO L495 AbstractCegarLoop]: Abstraction has 15412 states and 22986 transitions. [2022-11-23 13:57:15,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-23 13:57:15,368 INFO L276 IsEmpty]: Start isEmpty. Operand 15412 states and 22986 transitions. [2022-11-23 13:57:15,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-11-23 13:57:15,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:15,378 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:57:15,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:57:15,379 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)] === [2022-11-23 13:57:15,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:15,380 INFO L85 PathProgramCache]: Analyzing trace with hash -661579262, now seen corresponding path program 1 times [2022-11-23 13:57:15,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:15,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171436860] [2022-11-23 13:57:15,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:15,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:17,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2070 trivial. 0 not checked. [2022-11-23 13:57:17,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:17,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171436860] [2022-11-23 13:57:17,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171436860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:17,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:57:17,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:57:17,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818061908] [2022-11-23 13:57:17,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:17,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:57:17,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:17,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:57:17,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:57:17,012 INFO L87 Difference]: Start difference. First operand 15412 states and 22986 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-23 13:57:20,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:22,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:33,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:36,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:38,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:40,905 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 [] [2022-11-23 13:57:44,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:44,807 INFO L93 Difference]: Finished difference Result 32445 states and 48473 transitions. [2022-11-23 13:57:44,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:57:44,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 290 [2022-11-23 13:57:44,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:44,897 INFO L225 Difference]: With dead ends: 32445 [2022-11-23 13:57:44,897 INFO L226 Difference]: Without dead ends: 17080 [2022-11-23 13:57:44,987 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 [2022-11-23 13:57:44,990 INFO L413 NwaCegarLoop]: 16357 mSDtfsCounter, 8635 mSDsluCounter, 9305 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 18 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8636 SdHoareTripleChecker+Valid, 25662 SdHoareTripleChecker+Invalid, 2299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:44,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8636 Valid, 25662 Invalid, 2299 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 2277 Invalid, 4 Unknown, 0 Unchecked, 27.1s Time] [2022-11-23 13:57:45,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17080 states. [2022-11-23 13:57:46,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17080 to 17045. [2022-11-23 13:57:46,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17045 states, 10852 states have (on average 1.3296166605234059) internal successors, (14429), 11085 states have internal predecessors, (14429), 5517 states have call successors, (5517), 677 states have call predecessors, (5517), 673 states have return successors, (5514), 5480 states have call predecessors, (5514), 5513 states have call successors, (5514) [2022-11-23 13:57:46,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17045 states to 17045 states and 25460 transitions. [2022-11-23 13:57:46,453 INFO L78 Accepts]: Start accepts. Automaton has 17045 states and 25460 transitions. Word has length 290 [2022-11-23 13:57:46,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:46,454 INFO L495 AbstractCegarLoop]: Abstraction has 17045 states and 25460 transitions. [2022-11-23 13:57:46,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-23 13:57:46,454 INFO L276 IsEmpty]: Start isEmpty. Operand 17045 states and 25460 transitions. [2022-11-23 13:57:46,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-11-23 13:57:46,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:46,459 INFO L195 NwaCegarLoop]: trace histogram [27, 23, 23, 23, 23, 23, 23, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:57:46,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 13:57:46,460 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 13:57:46,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:46,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1323178950, now seen corresponding path program 1 times [2022-11-23 13:57:46,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:46,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525489074] [2022-11-23 13:57:46,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:46,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2247 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2247 trivial. 0 not checked. [2022-11-23 13:57:49,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:49,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525489074] [2022-11-23 13:57:49,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525489074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:49,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:57:49,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 13:57:49,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762897312] [2022-11-23 13:57:49,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:49,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:57:49,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:49,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:57:49,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:57:49,008 INFO L87 Difference]: Start difference. First operand 17045 states and 25460 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-23 13:57:53,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:12,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:14,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:17,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:18,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:20,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:25,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:28,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:58:28,434 INFO L93 Difference]: Finished difference Result 21583 states and 32157 transitions. [2022-11-23 13:58:28,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 13:58:28,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 293 [2022-11-23 13:58:28,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:58:28,540 INFO L225 Difference]: With dead ends: 21583 [2022-11-23 13:58:28,541 INFO L226 Difference]: Without dead ends: 21581 [2022-11-23 13:58:28,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 13:58:28,555 INFO L413 NwaCegarLoop]: 12853 mSDtfsCounter, 6495 mSDsluCounter, 34969 mSDsCounter, 0 mSdLazyCounter, 3616 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6512 SdHoareTripleChecker+Valid, 47822 SdHoareTripleChecker+Invalid, 3622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3616 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.6s IncrementalHoareTripleChecker+Time [2022-11-23 13:58:28,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6512 Valid, 47822 Invalid, 3622 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 3616 Invalid, 4 Unknown, 0 Unchecked, 38.6s Time] [2022-11-23 13:58:28,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21581 states. [2022-11-23 13:58:30,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21581 to 21569. [2022-11-23 13:58:30,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21569 states, 13696 states have (on average 1.326883761682243) internal successors, (18173), 13988 states have internal predecessors, (18173), 6988 states have call successors, (6988), 888 states have call predecessors, (6988), 882 states have return successors, (6981), 6940 states have call predecessors, (6981), 6980 states have call successors, (6981) [2022-11-23 13:58:30,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21569 states to 21569 states and 32142 transitions. [2022-11-23 13:58:30,383 INFO L78 Accepts]: Start accepts. Automaton has 21569 states and 32142 transitions. Word has length 293 [2022-11-23 13:58:30,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:58:30,385 INFO L495 AbstractCegarLoop]: Abstraction has 21569 states and 32142 transitions. [2022-11-23 13:58:30,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-23 13:58:30,385 INFO L276 IsEmpty]: Start isEmpty. Operand 21569 states and 32142 transitions. [2022-11-23 13:58:30,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-11-23 13:58:30,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:58:30,392 INFO L195 NwaCegarLoop]: trace histogram [27, 23, 23, 23, 23, 23, 23, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:58:30,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 13:58:30,392 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 13:58:30,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:58:30,393 INFO L85 PathProgramCache]: Analyzing trace with hash 540702754, now seen corresponding path program 1 times [2022-11-23 13:58:30,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:58:30,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586453773] [2022-11-23 13:58:30,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:58:30,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:58:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:58:33,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2254 trivial. 0 not checked. [2022-11-23 13:58:33,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:58:33,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586453773] [2022-11-23 13:58:33,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586453773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:58:33,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:58:33,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 13:58:33,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69107415] [2022-11-23 13:58:33,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:58:33,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:58:33,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:58:33,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:58:33,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:58:33,056 INFO L87 Difference]: Start difference. First operand 21569 states and 32142 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-23 13:58:37,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:42,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:51,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:52,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:53,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:55,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:57,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:59,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:02,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:06,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:07,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:59:07,767 INFO L93 Difference]: Finished difference Result 21887 states and 32542 transitions. [2022-11-23 13:59:07,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:59:07,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 301 [2022-11-23 13:59:07,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:59:07,880 INFO L225 Difference]: With dead ends: 21887 [2022-11-23 13:59:07,880 INFO L226 Difference]: Without dead ends: 21885 [2022-11-23 13:59:07,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 13:59:07,894 INFO L413 NwaCegarLoop]: 9440 mSDtfsCounter, 10043 mSDsluCounter, 19212 mSDsCounter, 0 mSdLazyCounter, 2512 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10060 SdHoareTripleChecker+Valid, 28652 SdHoareTripleChecker+Invalid, 2517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2512 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.9s IncrementalHoareTripleChecker+Time [2022-11-23 13:59:07,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10060 Valid, 28652 Invalid, 2517 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2512 Invalid, 3 Unknown, 0 Unchecked, 33.9s Time] [2022-11-23 13:59:07,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21885 states. [2022-11-23 13:59:09,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21885 to 21881. [2022-11-23 13:59:09,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21881 states, 13882 states have (on average 1.3256735340729002) internal successors, (18403), 14180 states have internal predecessors, (18403), 7070 states have call successors, (7070), 931 states have call predecessors, (7070), 926 states have return successors, (7064), 7022 states have call predecessors, (7064), 7062 states have call successors, (7064) [2022-11-23 13:59:09,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21881 states to 21881 states and 32537 transitions. [2022-11-23 13:59:09,869 INFO L78 Accepts]: Start accepts. Automaton has 21881 states and 32537 transitions. Word has length 301 [2022-11-23 13:59:09,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:59:09,870 INFO L495 AbstractCegarLoop]: Abstraction has 21881 states and 32537 transitions. [2022-11-23 13:59:09,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-23 13:59:09,870 INFO L276 IsEmpty]: Start isEmpty. Operand 21881 states and 32537 transitions. [2022-11-23 13:59:09,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-11-23 13:59:09,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:59:09,877 INFO L195 NwaCegarLoop]: trace histogram [27, 23, 23, 23, 23, 23, 23, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:59:09,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 13:59:09,877 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 13:59:09,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:59:09,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1675703934, now seen corresponding path program 1 times [2022-11-23 13:59:09,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:59:09,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779860616] [2022-11-23 13:59:09,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:59:09,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:59:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:59:12,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2263 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2259 trivial. 0 not checked. [2022-11-23 13:59:12,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:59:12,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779860616] [2022-11-23 13:59:12,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779860616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:59:12,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:59:12,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 13:59:12,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363961663] [2022-11-23 13:59:12,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:59:12,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:59:12,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:59:12,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:59:12,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:59:12,568 INFO L87 Difference]: Start difference. First operand 21881 states and 32537 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-23 13:59:16,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:36,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:39,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:41,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:43,879 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 [] [2022-11-23 13:59:50,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:59:50,632 INFO L93 Difference]: Finished difference Result 21899 states and 32555 transitions. [2022-11-23 13:59:50,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 13:59:50,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 307 [2022-11-23 13:59:50,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:59:50,740 INFO L225 Difference]: With dead ends: 21899 [2022-11-23 13:59:50,741 INFO L226 Difference]: Without dead ends: 21897 [2022-11-23 13:59:50,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 13:59:50,755 INFO L413 NwaCegarLoop]: 13010 mSDtfsCounter, 6489 mSDsluCounter, 35277 mSDsCounter, 0 mSdLazyCounter, 3639 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6504 SdHoareTripleChecker+Valid, 48287 SdHoareTripleChecker+Invalid, 3646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3639 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:59:50,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6504 Valid, 48287 Invalid, 3646 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 3639 Invalid, 5 Unknown, 0 Unchecked, 37.1s Time] [2022-11-23 13:59:50,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21897 states. [2022-11-23 13:59:52,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21897 to 21885. [2022-11-23 13:59:52,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21885 states, 13885 states have (on average 1.3256031688872885) internal successors, (18406), 14183 states have internal predecessors, (18406), 7070 states have call successors, (7070), 932 states have call predecessors, (7070), 927 states have return successors, (7064), 7022 states have call predecessors, (7064), 7062 states have call successors, (7064) [2022-11-23 13:59:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21885 states to 21885 states and 32540 transitions. [2022-11-23 13:59:52,525 INFO L78 Accepts]: Start accepts. Automaton has 21885 states and 32540 transitions. Word has length 307 [2022-11-23 13:59:52,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:59:52,526 INFO L495 AbstractCegarLoop]: Abstraction has 21885 states and 32540 transitions. [2022-11-23 13:59:52,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-23 13:59:52,526 INFO L276 IsEmpty]: Start isEmpty. Operand 21885 states and 32540 transitions. [2022-11-23 13:59:52,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-11-23 13:59:52,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:59:52,534 INFO L195 NwaCegarLoop]: trace histogram [27, 23, 23, 23, 23, 23, 23, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:59:52,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 13:59:52,534 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)] === [2022-11-23 13:59:52,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:59:52,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1328403040, now seen corresponding path program 1 times [2022-11-23 13:59:52,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:59:52,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305231085] [2022-11-23 13:59:52,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:59:52,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:59:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:59:55,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2273 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2267 trivial. 0 not checked. [2022-11-23 13:59:55,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:59:55,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305231085] [2022-11-23 13:59:55,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305231085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:59:55,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:59:55,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 13:59:55,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387344376] [2022-11-23 13:59:55,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:59:55,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:59:55,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:59:55,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:59:55,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:59:55,226 INFO L87 Difference]: Start difference. First operand 21885 states and 32540 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-23 13:59:59,792 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 [] [2022-11-23 14:00:21,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:24,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:27,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:30,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:34,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:00:34,508 INFO L93 Difference]: Finished difference Result 21903 states and 32558 transitions. [2022-11-23 14:00:34,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:00:34,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 312 [2022-11-23 14:00:34,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:00:34,572 INFO L225 Difference]: With dead ends: 21903 [2022-11-23 14:00:34,572 INFO L226 Difference]: Without dead ends: 21901 [2022-11-23 14:00:34,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:00:34,580 INFO L413 NwaCegarLoop]: 13010 mSDtfsCounter, 6489 mSDsluCounter, 35277 mSDsCounter, 0 mSdLazyCounter, 3642 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6503 SdHoareTripleChecker+Valid, 48287 SdHoareTripleChecker+Invalid, 3649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3642 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:00:34,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6503 Valid, 48287 Invalid, 3649 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 3642 Invalid, 5 Unknown, 0 Unchecked, 38.3s Time] [2022-11-23 14:00:34,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21901 states. [2022-11-23 14:00:35,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21901 to 21889. [2022-11-23 14:00:35,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21889 states, 13888 states have (on average 1.3255328341013826) internal successors, (18409), 14186 states have internal predecessors, (18409), 7070 states have call successors, (7070), 933 states have call predecessors, (7070), 928 states have return successors, (7064), 7022 states have call predecessors, (7064), 7062 states have call successors, (7064) [2022-11-23 14:00:35,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21889 states to 21889 states and 32543 transitions. [2022-11-23 14:00:36,000 INFO L78 Accepts]: Start accepts. Automaton has 21889 states and 32543 transitions. Word has length 312 [2022-11-23 14:00:36,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:00:36,001 INFO L495 AbstractCegarLoop]: Abstraction has 21889 states and 32543 transitions. [2022-11-23 14:00:36,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-23 14:00:36,002 INFO L276 IsEmpty]: Start isEmpty. Operand 21889 states and 32543 transitions. [2022-11-23 14:00:36,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-11-23 14:00:36,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:00:36,009 INFO L195 NwaCegarLoop]: trace histogram [27, 23, 23, 23, 23, 23, 23, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:00:36,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:00:36,009 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)] === [2022-11-23 14:00:36,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:00:36,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1088694330, now seen corresponding path program 1 times [2022-11-23 14:00:36,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:00:36,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001546870] [2022-11-23 14:00:36,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:00:36,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:00:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:00:38,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2271 trivial. 0 not checked. [2022-11-23 14:00:38,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:00:38,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001546870] [2022-11-23 14:00:38,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001546870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:00:38,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:00:38,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:00:38,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983442379] [2022-11-23 14:00:38,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:00:38,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:00:38,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:00:38,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:00:38,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:00:38,555 INFO L87 Difference]: Start difference. First operand 21889 states and 32543 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-23 14:00:41,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:43,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:57,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:01,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:03,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:04,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:06,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:15,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:19,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:21,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:22,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:01:22,259 INFO L93 Difference]: Finished difference Result 38666 states and 57642 transitions. [2022-11-23 14:01:22,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:01:22,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 313 [2022-11-23 14:01:22,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:01:22,415 INFO L225 Difference]: With dead ends: 38666 [2022-11-23 14:01:22,415 INFO L226 Difference]: Without dead ends: 38664 [2022-11-23 14:01:22,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:01:22,430 INFO L413 NwaCegarLoop]: 11884 mSDtfsCounter, 10012 mSDsluCounter, 32828 mSDsCounter, 0 mSdLazyCounter, 3372 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10026 SdHoareTripleChecker+Valid, 44712 SdHoareTripleChecker+Invalid, 3380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3372 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:01:22,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10026 Valid, 44712 Invalid, 3380 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 3372 Invalid, 5 Unknown, 0 Unchecked, 42.0s Time] [2022-11-23 14:01:22,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38664 states. [2022-11-23 14:01:24,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38664 to 38647. [2022-11-23 14:01:24,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38647 states, 24471 states have (on average 1.3250377998447143) internal successors, (32425), 25042 states have internal predecessors, (32425), 12551 states have call successors, (12551), 1638 states have call predecessors, (12551), 1622 states have return successors, (12649), 12422 states have call predecessors, (12649), 12539 states have call successors, (12649) [2022-11-23 14:01:25,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38647 states to 38647 states and 57625 transitions. [2022-11-23 14:01:25,251 INFO L78 Accepts]: Start accepts. Automaton has 38647 states and 57625 transitions. Word has length 313 [2022-11-23 14:01:25,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:01:25,252 INFO L495 AbstractCegarLoop]: Abstraction has 38647 states and 57625 transitions. [2022-11-23 14:01:25,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-23 14:01:25,253 INFO L276 IsEmpty]: Start isEmpty. Operand 38647 states and 57625 transitions. [2022-11-23 14:01:25,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-11-23 14:01:25,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:01:25,259 INFO L195 NwaCegarLoop]: trace histogram [27, 23, 23, 23, 23, 23, 23, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:01:25,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:01:25,260 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)] === [2022-11-23 14:01:25,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:01:25,260 INFO L85 PathProgramCache]: Analyzing trace with hash -873206560, now seen corresponding path program 1 times [2022-11-23 14:01:25,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:01:25,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260218450] [2022-11-23 14:01:25,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:01:25,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:01:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:01:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2305 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2295 trivial. 0 not checked. [2022-11-23 14:01:28,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:01:28,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260218450] [2022-11-23 14:01:28,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260218450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:01:28,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:01:28,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:01:28,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606900058] [2022-11-23 14:01:28,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:01:28,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:01:28,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:01:28,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:01:28,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:01:28,156 INFO L87 Difference]: Start difference. First operand 38647 states and 57625 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-23 14:01:32,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:35,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:39,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:59,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:01,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:03,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:04,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:06,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:08,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:10,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:12,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:15,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:20,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:22,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:23,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:25,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:27,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:29,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:31,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:02:31,116 INFO L93 Difference]: Finished difference Result 64041 states and 95311 transitions. [2022-11-23 14:02:31,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:02:31,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 322 [2022-11-23 14:02:31,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:02:31,346 INFO L225 Difference]: With dead ends: 64041 [2022-11-23 14:02:31,346 INFO L226 Difference]: Without dead ends: 64039 [2022-11-23 14:02:31,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:02:31,373 INFO L413 NwaCegarLoop]: 13903 mSDtfsCounter, 9690 mSDsluCounter, 35266 mSDsCounter, 0 mSdLazyCounter, 4389 mSolverCounterSat, 3 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9702 SdHoareTripleChecker+Valid, 49169 SdHoareTripleChecker+Invalid, 4403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4389 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:02:31,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9702 Valid, 49169 Invalid, 4403 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 4389 Invalid, 11 Unknown, 0 Unchecked, 60.3s Time] [2022-11-23 14:02:31,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64039 states. [2022-11-23 14:02:35,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64039 to 64008. [2022-11-23 14:02:35,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64008 states, 40126 states have (on average 1.3142351592483676) internal successors, (52735), 41324 states have internal predecessors, (52735), 20985 states have call successors, (20985), 2948 states have call predecessors, (20985), 2894 states have return successors, (21551), 20553 states have call predecessors, (21551), 20965 states have call successors, (21551) [2022-11-23 14:02:35,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64008 states to 64008 states and 95271 transitions. [2022-11-23 14:02:35,792 INFO L78 Accepts]: Start accepts. Automaton has 64008 states and 95271 transitions. Word has length 322 [2022-11-23 14:02:35,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:02:35,793 INFO L495 AbstractCegarLoop]: Abstraction has 64008 states and 95271 transitions. [2022-11-23 14:02:35,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-23 14:02:35,794 INFO L276 IsEmpty]: Start isEmpty. Operand 64008 states and 95271 transitions. [2022-11-23 14:02:35,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-23 14:02:35,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:02:35,799 INFO L195 NwaCegarLoop]: trace histogram [27, 23, 23, 23, 23, 23, 23, 7, 6, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:02:35,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:02:35,799 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)] === [2022-11-23 14:02:35,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:02:35,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1542393982, now seen corresponding path program 1 times [2022-11-23 14:02:35,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:02:35,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526329949] [2022-11-23 14:02:35,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:02:35,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:02:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:02:37,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2327 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2315 trivial. 0 not checked. [2022-11-23 14:02:37,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:02:37,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526329949] [2022-11-23 14:02:37,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526329949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:02:37,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:02:37,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:02:37,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153865252] [2022-11-23 14:02:37,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:02:37,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:02:37,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:02:37,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:02:37,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:02:37,753 INFO L87 Difference]: Start difference. First operand 64008 states and 95271 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-23 14:02:41,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:03:02,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:03:03,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:03:05,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:03:06,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:03:10,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:03:12,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:03:14,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:03:16,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:03:21,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:03:25,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:03:25,954 INFO L93 Difference]: Finished difference Result 64026 states and 95289 transitions. [2022-11-23 14:03:25,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:03:25,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 327 [2022-11-23 14:03:25,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:03:26,152 INFO L225 Difference]: With dead ends: 64026 [2022-11-23 14:03:26,152 INFO L226 Difference]: Without dead ends: 64024 [2022-11-23 14:03:26,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:03:26,174 INFO L413 NwaCegarLoop]: 13011 mSDtfsCounter, 6489 mSDsluCounter, 35279 mSDsCounter, 0 mSdLazyCounter, 3647 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6500 SdHoareTripleChecker+Valid, 48290 SdHoareTripleChecker+Invalid, 3655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3647 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:03:26,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6500 Valid, 48290 Invalid, 3655 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 3647 Invalid, 6 Unknown, 0 Unchecked, 45.5s Time] [2022-11-23 14:03:26,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64024 states. [2022-11-23 14:03:30,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64024 to 64012. [2022-11-23 14:03:30,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64012 states, 40129 states have (on average 1.3142116673727229) internal successors, (52738), 41327 states have internal predecessors, (52738), 20985 states have call successors, (20985), 2949 states have call predecessors, (20985), 2895 states have return successors, (21551), 20553 states have call predecessors, (21551), 20965 states have call successors, (21551) [2022-11-23 14:03:30,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64012 states to 64012 states and 95274 transitions. [2022-11-23 14:03:30,925 INFO L78 Accepts]: Start accepts. Automaton has 64012 states and 95274 transitions. Word has length 327 [2022-11-23 14:03:30,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:03:30,927 INFO L495 AbstractCegarLoop]: Abstraction has 64012 states and 95274 transitions. [2022-11-23 14:03:30,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-23 14:03:30,927 INFO L276 IsEmpty]: Start isEmpty. Operand 64012 states and 95274 transitions. [2022-11-23 14:03:30,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-11-23 14:03:30,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:03:30,932 INFO L195 NwaCegarLoop]: trace histogram [27, 23, 23, 23, 23, 23, 23, 8, 7, 7, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:03:30,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:03:30,934 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)] === [2022-11-23 14:03:30,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:03:30,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1479317344, now seen corresponding path program 1 times [2022-11-23 14:03:30,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:03:30,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99244223] [2022-11-23 14:03:30,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:03:30,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:03:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:03:32,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2339 trivial. 0 not checked. [2022-11-23 14:03:32,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:03:32,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99244223] [2022-11-23 14:03:32,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99244223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:03:32,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:03:32,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:03:32,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760398273] [2022-11-23 14:03:32,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:03:32,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:03:32,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:03:32,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:03:32,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:03:32,709 INFO L87 Difference]: Start difference. First operand 64012 states and 95274 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2022-11-23 14:03:36,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:03:58,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:02,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:06,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:08,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:09,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:11,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:13,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:19,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:19,046 INFO L93 Difference]: Finished difference Result 64030 states and 95292 transitions. [2022-11-23 14:04:19,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:04:19,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 332 [2022-11-23 14:04:19,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:19,281 INFO L225 Difference]: With dead ends: 64030 [2022-11-23 14:04:19,281 INFO L226 Difference]: Without dead ends: 64028 [2022-11-23 14:04:19,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:04:19,308 INFO L413 NwaCegarLoop]: 13011 mSDtfsCounter, 6489 mSDsluCounter, 35279 mSDsCounter, 0 mSdLazyCounter, 3646 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6499 SdHoareTripleChecker+Valid, 48290 SdHoareTripleChecker+Invalid, 3652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3646 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:19,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6499 Valid, 48290 Invalid, 3652 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 3646 Invalid, 4 Unknown, 0 Unchecked, 43.7s Time] [2022-11-23 14:04:19,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64028 states. [2022-11-23 14:04:23,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64028 to 64016. [2022-11-23 14:04:23,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64016 states, 40132 states have (on average 1.3141881790092693) internal successors, (52741), 41330 states have internal predecessors, (52741), 20985 states have call successors, (20985), 2950 states have call predecessors, (20985), 2896 states have return successors, (21551), 20553 states have call predecessors, (21551), 20965 states have call successors, (21551) [2022-11-23 14:04:23,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64016 states to 64016 states and 95277 transitions. [2022-11-23 14:04:23,753 INFO L78 Accepts]: Start accepts. Automaton has 64016 states and 95277 transitions. Word has length 332 [2022-11-23 14:04:23,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:23,754 INFO L495 AbstractCegarLoop]: Abstraction has 64016 states and 95277 transitions. [2022-11-23 14:04:23,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2022-11-23 14:04:23,754 INFO L276 IsEmpty]: Start isEmpty. Operand 64016 states and 95277 transitions. [2022-11-23 14:04:23,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2022-11-23 14:04:23,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:23,758 INFO L195 NwaCegarLoop]: trace histogram [27, 23, 23, 23, 23, 23, 23, 9, 8, 8, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:23,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 14:04:23,758 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:04:23,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:23,759 INFO L85 PathProgramCache]: Analyzing trace with hash -987136516, now seen corresponding path program 1 times [2022-11-23 14:04:23,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:23,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752756620] [2022-11-23 14:04:23,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:23,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:25,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2382 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2366 trivial. 0 not checked. [2022-11-23 14:04:25,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:25,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752756620] [2022-11-23 14:04:25,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752756620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:25,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:25,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:04:25,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133023855] [2022-11-23 14:04:25,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:25,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:04:25,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:25,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:04:25,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:04:25,524 INFO L87 Difference]: Start difference. First operand 64016 states and 95277 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-23 14:04:29,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:50,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:53,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:55,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:59,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:05:01,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:05:03,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:05:05,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:05:07,845 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 [] [2022-11-23 14:05:12,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:12,898 INFO L93 Difference]: Finished difference Result 64034 states and 95295 transitions. [2022-11-23 14:05:12,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:05:12,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 336 [2022-11-23 14:05:12,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:13,119 INFO L225 Difference]: With dead ends: 64034 [2022-11-23 14:05:13,119 INFO L226 Difference]: Without dead ends: 64032 [2022-11-23 14:05:13,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:05:13,147 INFO L413 NwaCegarLoop]: 13045 mSDtfsCounter, 6489 mSDsluCounter, 35347 mSDsCounter, 0 mSdLazyCounter, 3645 mSolverCounterSat, 2 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6498 SdHoareTripleChecker+Valid, 48392 SdHoareTripleChecker+Invalid, 3655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3645 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:13,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6498 Valid, 48392 Invalid, 3655 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 3645 Invalid, 8 Unknown, 0 Unchecked, 45.0s Time] [2022-11-23 14:05:13,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64032 states. [2022-11-23 14:05:16,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64032 to 64020. [2022-11-23 14:05:16,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64020 states, 40135 states have (on average 1.3141646941572194) internal successors, (52744), 41333 states have internal predecessors, (52744), 20985 states have call successors, (20985), 2951 states have call predecessors, (20985), 2897 states have return successors, (21551), 20553 states have call predecessors, (21551), 20965 states have call successors, (21551) [2022-11-23 14:05:17,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64020 states to 64020 states and 95280 transitions. [2022-11-23 14:05:17,279 INFO L78 Accepts]: Start accepts. Automaton has 64020 states and 95280 transitions. Word has length 336 [2022-11-23 14:05:17,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:05:17,280 INFO L495 AbstractCegarLoop]: Abstraction has 64020 states and 95280 transitions. [2022-11-23 14:05:17,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-23 14:05:17,280 INFO L276 IsEmpty]: Start isEmpty. Operand 64020 states and 95280 transitions. [2022-11-23 14:05:17,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-11-23 14:05:17,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:17,287 INFO L195 NwaCegarLoop]: trace histogram [27, 23, 23, 23, 23, 23, 23, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:05:17,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 14:05:17,287 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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)] === [2022-11-23 14:05:17,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:17,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1518915481, now seen corresponding path program 1 times [2022-11-23 14:05:17,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:05:17,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734056940] [2022-11-23 14:05:17,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:17,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:05:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:18,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2238 trivial. 0 not checked. [2022-11-23 14:05:18,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:05:18,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734056940] [2022-11-23 14:05:18,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734056940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:18,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:18,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:05:18,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313475682] [2022-11-23 14:05:18,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:18,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:05:18,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:05:18,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:05:18,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:05:18,577 INFO L87 Difference]: Start difference. First operand 64020 states and 95280 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2022-11-23 14:05:22,682 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 [] [2022-11-23 14:05:36,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:05:39,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:05:42,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:05:44,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:05:46,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:05:48,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:05:53,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:53,679 INFO L93 Difference]: Finished difference Result 148784 states and 221582 transitions. [2022-11-23 14:05:53,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:05:53,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 337 [2022-11-23 14:05:53,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:54,272 INFO L225 Difference]: With dead ends: 148784 [2022-11-23 14:05:54,273 INFO L226 Difference]: Without dead ends: 84905 [2022-11-23 14:05:54,591 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 [2022-11-23 14:05:54,592 INFO L413 NwaCegarLoop]: 17206 mSDtfsCounter, 8628 mSDsluCounter, 9303 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 15 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8629 SdHoareTripleChecker+Valid, 26509 SdHoareTripleChecker+Invalid, 2372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:54,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8629 Valid, 26509 Invalid, 2372 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [15 Valid, 2352 Invalid, 5 Unknown, 0 Unchecked, 30.9s Time] [2022-11-23 14:05:54,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84905 states. [2022-11-23 14:05:59,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84905 to 84694. [2022-11-23 14:05:59,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84694 states, 53166 states have (on average 1.3140164766956326) internal successors, (69861), 54778 states have internal predecessors, (69861), 27741 states have call successors, (27741), 3859 states have call predecessors, (27741), 3784 states have return successors, (28473), 27136 states have call predecessors, (28473), 27721 states have call successors, (28473) [2022-11-23 14:06:00,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84694 states to 84694 states and 126075 transitions. [2022-11-23 14:06:00,750 INFO L78 Accepts]: Start accepts. Automaton has 84694 states and 126075 transitions. Word has length 337 [2022-11-23 14:06:00,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:00,751 INFO L495 AbstractCegarLoop]: Abstraction has 84694 states and 126075 transitions. [2022-11-23 14:06:00,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2022-11-23 14:06:00,752 INFO L276 IsEmpty]: Start isEmpty. Operand 84694 states and 126075 transitions. [2022-11-23 14:06:00,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-11-23 14:06:00,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:00,758 INFO L195 NwaCegarLoop]: trace histogram [27, 23, 23, 23, 23, 23, 23, 10, 9, 9, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:06:00,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 14:06:00,758 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:06:00,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:00,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1910755808, now seen corresponding path program 1 times [2022-11-23 14:06:00,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:00,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509590398] [2022-11-23 14:06:00,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:00,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:02,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2417 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2399 trivial. 0 not checked. [2022-11-23 14:06:02,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:06:02,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509590398] [2022-11-23 14:06:02,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509590398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:02,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:06:02,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:06:02,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501976188] [2022-11-23 14:06:02,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:02,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:06:02,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:06:02,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:06:02,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:06:02,916 INFO L87 Difference]: Start difference. First operand 84694 states and 126075 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-23 14:06:07,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:06:28,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:06:30,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:06:32,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:06:34,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:06:36,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:06:37,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:06:39,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:06:46,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:46,749 INFO L93 Difference]: Finished difference Result 84712 states and 126093 transitions. [2022-11-23 14:06:46,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:06:46,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 342 [2022-11-23 14:06:46,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:47,214 INFO L225 Difference]: With dead ends: 84712 [2022-11-23 14:06:47,214 INFO L226 Difference]: Without dead ends: 84710 [2022-11-23 14:06:47,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:06:47,241 INFO L413 NwaCegarLoop]: 13011 mSDtfsCounter, 6489 mSDsluCounter, 35279 mSDsCounter, 0 mSdLazyCounter, 3641 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6497 SdHoareTripleChecker+Valid, 48290 SdHoareTripleChecker+Invalid, 3649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3641 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:47,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6497 Valid, 48290 Invalid, 3649 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 3641 Invalid, 6 Unknown, 0 Unchecked, 40.7s Time] [2022-11-23 14:06:47,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84710 states. [2022-11-23 14:06:52,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84710 to 84698. [2022-11-23 14:06:52,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84698 states, 53169 states have (on average 1.3139987586751678) internal successors, (69864), 54781 states have internal predecessors, (69864), 27741 states have call successors, (27741), 3860 states have call predecessors, (27741), 3785 states have return successors, (28473), 27136 states have call predecessors, (28473), 27721 states have call successors, (28473) [2022-11-23 14:06:53,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84698 states to 84698 states and 126078 transitions. [2022-11-23 14:06:53,387 INFO L78 Accepts]: Start accepts. Automaton has 84698 states and 126078 transitions. Word has length 342 [2022-11-23 14:06:53,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:53,388 INFO L495 AbstractCegarLoop]: Abstraction has 84698 states and 126078 transitions. [2022-11-23 14:06:53,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-23 14:06:53,389 INFO L276 IsEmpty]: Start isEmpty. Operand 84698 states and 126078 transitions. [2022-11-23 14:06:53,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-23 14:06:53,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:53,393 INFO L195 NwaCegarLoop]: trace histogram [27, 23, 23, 23, 23, 23, 23, 11, 10, 10, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:06:53,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 14:06:53,394 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:06:53,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:53,395 INFO L85 PathProgramCache]: Analyzing trace with hash 420412796, now seen corresponding path program 1 times [2022-11-23 14:06:53,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:53,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449985489] [2022-11-23 14:06:53,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:53,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat