./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-mutex_drivers-net-netconsole.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 71a59a3596571aa79fb44a527a9b6a33b40c9acdae164ed96a4388ebcdf2e0df --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 04:08:06,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:08:06,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:08:06,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:08:06,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:08:06,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:08:06,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:08:06,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:08:06,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:08:06,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:08:06,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:08:06,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:08:06,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:08:06,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:08:06,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:08:06,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:08:06,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:08:06,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:08:06,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:08:06,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:08:06,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:08:06,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:08:06,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:08:06,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:08:06,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:08:06,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:08:06,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:08:06,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:08:06,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:08:06,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:08:06,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:08:06,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:08:06,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:08:06,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:08:06,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:08:06,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:08:06,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:08:06,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:08:06,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:08:06,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:08:06,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:08:06,988 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 04:08:07,028 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:08:07,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:08:07,029 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:08:07,030 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:08:07,031 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:08:07,031 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:08:07,031 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:08:07,031 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:08:07,032 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:08:07,032 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:08:07,033 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:08:07,033 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:08:07,033 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:08:07,033 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:08:07,034 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:08:07,034 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:08:07,034 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:08:07,034 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:08:07,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:08:07,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:08:07,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:08:07,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:08:07,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:08:07,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:08:07,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:08:07,038 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:08:07,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:08:07,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:08:07,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:08:07,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:08:07,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:08:07,040 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:08:07,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:08:07,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:08:07,040 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:08:07,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:08:07,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:08:07,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:08:07,041 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_648ad1ee-0430-4921-943b-9119ad082d4c/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71a59a3596571aa79fb44a527a9b6a33b40c9acdae164ed96a4388ebcdf2e0df [2022-11-03 04:08:07,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:08:07,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:08:07,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:08:07,358 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:08:07,359 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:08:07,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2022-11-03 04:08:07,432 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/bin/utaipan-7li7fVZpFI/data/078fa1a4c/1d1b6a89a6bb41e796a8657c07b11375/FLAGa6fce4e96 [2022-11-03 04:08:08,359 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:08:08,360 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2022-11-03 04:08:08,417 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/bin/utaipan-7li7fVZpFI/data/078fa1a4c/1d1b6a89a6bb41e796a8657c07b11375/FLAGa6fce4e96 [2022-11-03 04:08:08,866 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/bin/utaipan-7li7fVZpFI/data/078fa1a4c/1d1b6a89a6bb41e796a8657c07b11375 [2022-11-03 04:08:08,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:08:08,873 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:08:08,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:08:08,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:08:08,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:08:08,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:08:08" (1/1) ... [2022-11-03 04:08:08,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29af4f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:08, skipping insertion in model container [2022-11-03 04:08:08,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:08:08" (1/1) ... [2022-11-03 04:08:08,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:08:09,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:08:11,296 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311030,311043] [2022-11-03 04:08:11,303 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311196,311209] [2022-11-03 04:08:11,304 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311360,311373] [2022-11-03 04:08:11,305 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311525,311538] [2022-11-03 04:08:11,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:08:11,370 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:08:11,805 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311030,311043] [2022-11-03 04:08:11,806 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311196,311209] [2022-11-03 04:08:11,806 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311360,311373] [2022-11-03 04:08:11,807 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311525,311538] [2022-11-03 04:08:11,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:08:11,963 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:08:11,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:11 WrapperNode [2022-11-03 04:08:11,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:08:11,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:08:11,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:08:11,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:08:11,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:11" (1/1) ... [2022-11-03 04:08:12,071 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:11" (1/1) ... [2022-11-03 04:08:12,179 INFO L138 Inliner]: procedures = 289, calls = 1070, calls flagged for inlining = 163, calls inlined = 153, statements flattened = 3446 [2022-11-03 04:08:12,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:08:12,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:08:12,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:08:12,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:08:12,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:11" (1/1) ... [2022-11-03 04:08:12,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:11" (1/1) ... [2022-11-03 04:08:12,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:11" (1/1) ... [2022-11-03 04:08:12,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:11" (1/1) ... [2022-11-03 04:08:12,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:11" (1/1) ... [2022-11-03 04:08:12,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:11" (1/1) ... [2022-11-03 04:08:12,418 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:11" (1/1) ... [2022-11-03 04:08:12,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:11" (1/1) ... [2022-11-03 04:08:12,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:08:12,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:08:12,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:08:12,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:08:12,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:11" (1/1) ... [2022-11-03 04:08:12,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:08:12,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:08:12,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:08:12,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ad1ee-0430-4921-943b-9119ad082d4c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:08:12,552 INFO L130 BoogieDeclarations]: Found specification of procedure show_enabled [2022-11-03 04:08:12,552 INFO L138 BoogieDeclarations]: Found implementation of procedure show_enabled [2022-11-03 04:08:12,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdevice_notifier [2022-11-03 04:08:12,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdevice_notifier [2022-11-03 04:08:12,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 04:08:12,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 04:08:12,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 04:08:12,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 04:08:12,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 04:08:12,554 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 04:08:12,554 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_mac [2022-11-03 04:08:12,554 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_mac [2022-11-03 04:08:12,555 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_put [2022-11-03 04:08:12,555 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_put [2022-11-03 04:08:12,555 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_ip [2022-11-03 04:08:12,555 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_ip [2022-11-03 04:08:12,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 04:08:12,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 04:08:12,556 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-03 04:08:12,556 INFO L130 BoogieDeclarations]: Found specification of procedure show_dev_name [2022-11-03 04:08:12,556 INFO L138 BoogieDeclarations]: Found implementation of procedure show_dev_name [2022-11-03 04:08:12,556 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice_notifier [2022-11-03 04:08:12,557 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdevice_notifier [2022-11-03 04:08:12,557 INFO L130 BoogieDeclarations]: Found specification of procedure drop_netconsole_target [2022-11-03 04:08:12,557 INFO L138 BoogieDeclarations]: Found implementation of procedure drop_netconsole_target [2022-11-03 04:08:12,557 INFO L130 BoogieDeclarations]: Found specification of procedure free_param_target [2022-11-03 04:08:12,558 INFO L138 BoogieDeclarations]: Found implementation of procedure free_param_target [2022-11-03 04:08:12,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 04:08:12,558 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 04:08:12,558 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_get [2022-11-03 04:08:12,559 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_get [2022-11-03 04:08:12,559 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_mac [2022-11-03 04:08:12,559 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_mac [2022-11-03 04:08:12,559 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_ip [2022-11-03 04:08:12,560 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_ip [2022-11-03 04:08:12,560 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 04:08:12,560 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 04:08:12,560 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-03 04:08:12,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-03 04:08:12,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_netconsole_target [2022-11-03 04:08:12,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_netconsole_target [2022-11-03 04:08:12,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 04:08:12,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 04:08:12,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 04:08:12,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 04:08:12,564 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 04:08:12,565 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 04:08:12,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 04:08:12,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 04:08:12,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-03 04:08:12,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-03 04:08:12,566 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 04:08:12,566 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 04:08:12,566 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_release [2022-11-03 04:08:12,567 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_release [2022-11-03 04:08:12,567 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_attr_show [2022-11-03 04:08:12,567 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_attr_show [2022-11-03 04:08:12,567 INFO L130 BoogieDeclarations]: Found specification of procedure make_netconsole_target [2022-11-03 04:08:12,567 INFO L138 BoogieDeclarations]: Found implementation of procedure make_netconsole_target [2022-11-03 04:08:12,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:08:12,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 04:08:12,568 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_cleanup [2022-11-03 04:08:12,568 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_cleanup [2022-11-03 04:08:12,568 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_setup [2022-11-03 04:08:12,568 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_setup [2022-11-03 04:08:12,569 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 04:08:12,570 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 04:08:12,570 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 04:08:12,570 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 04:08:12,570 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 04:08:12,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 04:08:12,570 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 04:08:12,571 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 04:08:12,571 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_port [2022-11-03 04:08:12,571 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_port [2022-11-03 04:08:12,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 04:08:12,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 04:08:12,572 INFO L130 BoogieDeclarations]: Found specification of procedure strnchr [2022-11-03 04:08:12,572 INFO L138 BoogieDeclarations]: Found implementation of procedure strnchr [2022-11-03 04:08:12,572 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtou16 [2022-11-03 04:08:12,573 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtou16 [2022-11-03 04:08:12,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 04:08:12,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 04:08:12,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 04:08:12,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 04:08:12,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 04:08:12,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 04:08:12,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 04:08:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-03 04:08:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-03 04:08:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure store_enabled [2022-11-03 04:08:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure store_enabled [2022-11-03 04:08:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_ip [2022-11-03 04:08:12,577 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_ip [2022-11-03 04:08:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2022-11-03 04:08:12,577 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2022-11-03 04:08:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_cleanup_netconsole_14_2 [2022-11-03 04:08:12,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_cleanup_netconsole_14_2 [2022-11-03 04:08:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 04:08:12,578 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 04:08:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure to_target [2022-11-03 04:08:12,578 INFO L138 BoogieDeclarations]: Found implementation of procedure to_target [2022-11-03 04:08:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-03 04:08:12,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-03 04:08:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure config_item_put [2022-11-03 04:08:12,583 INFO L138 BoogieDeclarations]: Found implementation of procedure config_item_put [2022-11-03 04:08:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:08:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_mac [2022-11-03 04:08:12,583 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_mac [2022-11-03 04:08:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure in6_pton [2022-11-03 04:08:12,584 INFO L138 BoogieDeclarations]: Found implementation of procedure in6_pton [2022-11-03 04:08:12,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 04:08:12,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 04:08:12,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 04:08:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:08:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 04:08:12,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 04:08:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 04:08:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 04:08:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure store_local_ip [2022-11-03 04:08:12,592 INFO L138 BoogieDeclarations]: Found implementation of procedure store_local_ip [2022-11-03 04:08:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure in_aton [2022-11-03 04:08:12,592 INFO L138 BoogieDeclarations]: Found implementation of procedure in_aton [2022-11-03 04:08:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 04:08:12,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 04:08:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-03 04:08:12,593 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-03 04:08:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure store_dev_name [2022-11-03 04:08:12,593 INFO L138 BoogieDeclarations]: Found implementation of procedure store_dev_name [2022-11-03 04:08:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_port [2022-11-03 04:08:12,594 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_port [2022-11-03 04:08:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_attr_store [2022-11-03 04:08:12,594 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_attr_store [2022-11-03 04:08:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:08:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure store_local_port [2022-11-03 04:08:12,594 INFO L138 BoogieDeclarations]: Found implementation of procedure store_local_port [2022-11-03 04:08:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 04:08:12,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 04:08:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure config_item_name [2022-11-03 04:08:12,595 INFO L138 BoogieDeclarations]: Found implementation of procedure config_item_name [2022-11-03 04:08:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_port [2022-11-03 04:08:12,596 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_port [2022-11-03 04:08:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:08:12,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:08:13,446 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:08:13,451 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:08:13,581 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 04:08:15,806 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 04:08:15,920 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:08:16,585 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:08:16,585 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-03 04:08:16,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:08:16 BoogieIcfgContainer [2022-11-03 04:08:16,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:08:16,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:08:16,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:08:16,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:08:16,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:08:08" (1/3) ... [2022-11-03 04:08:16,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e461ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:08:16, skipping insertion in model container [2022-11-03 04:08:16,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:11" (2/3) ... [2022-11-03 04:08:16,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e461ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:08:16, skipping insertion in model container [2022-11-03 04:08:16,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:08:16" (3/3) ... [2022-11-03 04:08:16,605 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2022-11-03 04:08:16,626 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:08:16,626 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 04:08:16,745 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:08:16,761 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;@310304a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:08:16,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 04:08:16,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 1124 states, 667 states have (on average 1.302848575712144) internal successors, (869), 676 states have internal predecessors, (869), 392 states have call successors, (392), 63 states have call predecessors, (392), 62 states have return successors, (387), 387 states have call predecessors, (387), 387 states have call successors, (387) [2022-11-03 04:08:16,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2022-11-03 04:08:16,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:16,840 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:16,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:08:16,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:16,853 INFO L85 PathProgramCache]: Analyzing trace with hash 228936648, now seen corresponding path program 1 times [2022-11-03 04:08:16,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:08:16,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126716978] [2022-11-03 04:08:16,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:16,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:08:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:18,558 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21756 trivial. 0 not checked. [2022-11-03 04:08:18,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:08:18,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126716978] [2022-11-03 04:08:18,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126716978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:18,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:18,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:08:18,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881721316] [2022-11-03 04:08:18,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:18,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:08:18,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:08:18,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:08:18,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:18,621 INFO L87 Difference]: Start difference. First operand has 1124 states, 667 states have (on average 1.302848575712144) internal successors, (869), 676 states have internal predecessors, (869), 392 states have call successors, (392), 63 states have call predecessors, (392), 62 states have return successors, (387), 387 states have call predecessors, (387), 387 states have call successors, (387) Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2022-11-03 04:08:19,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:19,573 INFO L93 Difference]: Finished difference Result 2950 states and 4346 transitions. [2022-11-03 04:08:19,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:08:19,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) Word has length 761 [2022-11-03 04:08:19,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:19,699 INFO L225 Difference]: With dead ends: 2950 [2022-11-03 04:08:19,699 INFO L226 Difference]: Without dead ends: 1966 [2022-11-03 04:08:19,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:19,714 INFO L413 NwaCegarLoop]: 1742 mSDtfsCounter, 1340 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:19,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1340 Valid, 3111 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 04:08:19,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2022-11-03 04:08:19,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1962. [2022-11-03 04:08:19,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1189 states have (on average 1.313708999158957) internal successors, (1562), 1205 states have internal predecessors, (1562), 651 states have call successors, (651), 120 states have call predecessors, (651), 119 states have return successors, (647), 647 states have call predecessors, (647), 647 states have call successors, (647) [2022-11-03 04:08:19,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2860 transitions. [2022-11-03 04:08:19,995 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2860 transitions. Word has length 761 [2022-11-03 04:08:20,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:20,000 INFO L495 AbstractCegarLoop]: Abstraction has 1962 states and 2860 transitions. [2022-11-03 04:08:20,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2022-11-03 04:08:20,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2860 transitions. [2022-11-03 04:08:20,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2022-11-03 04:08:20,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:20,043 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:20,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:08:20,044 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:08:20,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:20,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1624430654, now seen corresponding path program 1 times [2022-11-03 04:08:20,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:08:20,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57732196] [2022-11-03 04:08:20,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:20,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:08:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:21,003 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-03 04:08:21,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:08:21,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57732196] [2022-11-03 04:08:21,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57732196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:21,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:21,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:08:21,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192463141] [2022-11-03 04:08:21,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:21,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:08:21,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:08:21,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:08:21,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:21,015 INFO L87 Difference]: Start difference. First operand 1962 states and 2860 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-03 04:08:21,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:21,803 INFO L93 Difference]: Finished difference Result 4724 states and 6830 transitions. [2022-11-03 04:08:21,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:08:21,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 788 [2022-11-03 04:08:21,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:21,836 INFO L225 Difference]: With dead ends: 4724 [2022-11-03 04:08:21,837 INFO L226 Difference]: Without dead ends: 2911 [2022-11-03 04:08:21,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:21,856 INFO L413 NwaCegarLoop]: 1753 mSDtfsCounter, 1318 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 3180 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:21,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1318 Valid, 3180 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 04:08:21,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2022-11-03 04:08:22,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2892. [2022-11-03 04:08:22,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 1755 states have (on average 1.3128205128205128) internal successors, (2304), 1782 states have internal predecessors, (2304), 932 states have call successors, (932), 203 states have call predecessors, (932), 202 states have return successors, (928), 923 states have call predecessors, (928), 928 states have call successors, (928) [2022-11-03 04:08:22,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 4164 transitions. [2022-11-03 04:08:22,137 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 4164 transitions. Word has length 788 [2022-11-03 04:08:22,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:22,139 INFO L495 AbstractCegarLoop]: Abstraction has 2892 states and 4164 transitions. [2022-11-03 04:08:22,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-03 04:08:22,140 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 4164 transitions. [2022-11-03 04:08:22,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2022-11-03 04:08:22,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:22,159 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:22,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:08:22,160 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:08:22,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:22,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1249087455, now seen corresponding path program 1 times [2022-11-03 04:08:22,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:08:22,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010435545] [2022-11-03 04:08:22,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:22,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:08:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:22,882 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-03 04:08:22,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:08:22,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010435545] [2022-11-03 04:08:22,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010435545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:22,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:22,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:08:22,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416538744] [2022-11-03 04:08:22,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:22,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:08:22,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:08:22,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:08:22,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:22,887 INFO L87 Difference]: Start difference. First operand 2892 states and 4164 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-03 04:08:23,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:23,877 INFO L93 Difference]: Finished difference Result 7514 states and 10747 transitions. [2022-11-03 04:08:23,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:08:23,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 789 [2022-11-03 04:08:23,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:23,909 INFO L225 Difference]: With dead ends: 7514 [2022-11-03 04:08:23,909 INFO L226 Difference]: Without dead ends: 4771 [2022-11-03 04:08:23,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:23,922 INFO L413 NwaCegarLoop]: 1781 mSDtfsCounter, 1317 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 3208 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:23,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1317 Valid, 3208 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 04:08:23,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4771 states. [2022-11-03 04:08:24,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4771 to 4752. [2022-11-03 04:08:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4752 states, 2887 states have (on average 1.312088673363353) internal successors, (3788), 2936 states have internal predecessors, (3788), 1494 states have call successors, (1494), 369 states have call predecessors, (1494), 368 states have return successors, (1490), 1475 states have call predecessors, (1490), 1490 states have call successors, (1490) [2022-11-03 04:08:24,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 6772 transitions. [2022-11-03 04:08:24,216 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 6772 transitions. Word has length 789 [2022-11-03 04:08:24,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:24,217 INFO L495 AbstractCegarLoop]: Abstraction has 4752 states and 6772 transitions. [2022-11-03 04:08:24,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-03 04:08:24,218 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 6772 transitions. [2022-11-03 04:08:24,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2022-11-03 04:08:24,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:24,231 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:24,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:08:24,232 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:08:24,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:24,232 INFO L85 PathProgramCache]: Analyzing trace with hash -585860028, now seen corresponding path program 1 times [2022-11-03 04:08:24,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:08:24,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195930087] [2022-11-03 04:08:24,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:24,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:08:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-03 04:08:24,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:08:24,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195930087] [2022-11-03 04:08:24,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195930087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:24,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:24,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:08:24,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977705641] [2022-11-03 04:08:24,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:24,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:08:24,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:08:24,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:08:24,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:24,777 INFO L87 Difference]: Start difference. First operand 4752 states and 6772 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-03 04:08:25,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:25,736 INFO L93 Difference]: Finished difference Result 13050 states and 18507 transitions. [2022-11-03 04:08:25,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:08:25,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 792 [2022-11-03 04:08:25,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:25,790 INFO L225 Difference]: With dead ends: 13050 [2022-11-03 04:08:25,790 INFO L226 Difference]: Without dead ends: 8447 [2022-11-03 04:08:25,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:25,813 INFO L413 NwaCegarLoop]: 1849 mSDtfsCounter, 1314 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 3276 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:25,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1314 Valid, 3276 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 04:08:25,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8447 states. [2022-11-03 04:08:26,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8447 to 8428. [2022-11-03 04:08:26,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8428 states, 5126 states have (on average 1.3109637143971908) internal successors, (6720), 5219 states have internal predecessors, (6720), 2599 states have call successors, (2599), 701 states have call predecessors, (2599), 700 states have return successors, (2595), 2560 states have call predecessors, (2595), 2595 states have call successors, (2595) [2022-11-03 04:08:26,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8428 states to 8428 states and 11914 transitions. [2022-11-03 04:08:26,523 INFO L78 Accepts]: Start accepts. Automaton has 8428 states and 11914 transitions. Word has length 792 [2022-11-03 04:08:26,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:26,524 INFO L495 AbstractCegarLoop]: Abstraction has 8428 states and 11914 transitions. [2022-11-03 04:08:26,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-03 04:08:26,534 INFO L276 IsEmpty]: Start isEmpty. Operand 8428 states and 11914 transitions. [2022-11-03 04:08:26,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2022-11-03 04:08:26,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:26,553 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:26,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 04:08:26,553 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:08:26,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:26,554 INFO L85 PathProgramCache]: Analyzing trace with hash 364942462, now seen corresponding path program 1 times [2022-11-03 04:08:26,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:08:26,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596001230] [2022-11-03 04:08:26,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:26,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:08:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:27,046 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-03 04:08:27,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:08:27,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596001230] [2022-11-03 04:08:27,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596001230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:27,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:27,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:08:27,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754329241] [2022-11-03 04:08:27,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:27,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:08:27,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:08:27,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:08:27,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:27,051 INFO L87 Difference]: Start difference. First operand 8428 states and 11914 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-03 04:08:28,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:28,508 INFO L93 Difference]: Finished difference Result 23946 states and 33731 transitions. [2022-11-03 04:08:28,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:08:28,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 791 [2022-11-03 04:08:28,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:28,622 INFO L225 Difference]: With dead ends: 23946 [2022-11-03 04:08:28,622 INFO L226 Difference]: Without dead ends: 15667 [2022-11-03 04:08:28,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:28,668 INFO L413 NwaCegarLoop]: 1897 mSDtfsCounter, 1315 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 3324 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:28,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 3324 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 04:08:28,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15667 states. [2022-11-03 04:08:29,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15667 to 15648. [2022-11-03 04:08:29,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15648 states, 9529 states have (on average 1.3092664497848672) internal successors, (12476), 9710 states have internal predecessors, (12476), 4752 states have call successors, (4752), 1365 states have call predecessors, (4752), 1364 states have return successors, (4748), 4673 states have call predecessors, (4748), 4748 states have call successors, (4748) [2022-11-03 04:08:29,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15648 states to 15648 states and 21976 transitions. [2022-11-03 04:08:29,891 INFO L78 Accepts]: Start accepts. Automaton has 15648 states and 21976 transitions. Word has length 791 [2022-11-03 04:08:29,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:29,892 INFO L495 AbstractCegarLoop]: Abstraction has 15648 states and 21976 transitions. [2022-11-03 04:08:29,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-03 04:08:29,893 INFO L276 IsEmpty]: Start isEmpty. Operand 15648 states and 21976 transitions. [2022-11-03 04:08:29,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2022-11-03 04:08:29,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:29,903 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:29,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 04:08:29,906 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:08:29,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:29,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1609922599, now seen corresponding path program 1 times [2022-11-03 04:08:29,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:08:29,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376310411] [2022-11-03 04:08:29,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:29,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:08:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:30,409 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-03 04:08:30,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:08:30,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376310411] [2022-11-03 04:08:30,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376310411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:30,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:30,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:08:30,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265584140] [2022-11-03 04:08:30,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:30,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:08:30,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:08:30,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:08:30,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:30,413 INFO L87 Difference]: Start difference. First operand 15648 states and 21976 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-03 04:08:32,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:32,346 INFO L93 Difference]: Finished difference Result 45298 states and 63439 transitions. [2022-11-03 04:08:32,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:08:32,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 790 [2022-11-03 04:08:32,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:32,563 INFO L225 Difference]: With dead ends: 45298 [2022-11-03 04:08:32,564 INFO L226 Difference]: Without dead ends: 29799 [2022-11-03 04:08:32,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:32,646 INFO L413 NwaCegarLoop]: 1944 mSDtfsCounter, 1316 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 3371 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:32,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 3371 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 04:08:32,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29799 states. [2022-11-03 04:08:35,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29799 to 29780. [2022-11-03 04:08:35,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29780 states, 18160 states have (on average 1.3070484581497797) internal successors, (23736), 18517 states have internal predecessors, (23736), 8925 states have call successors, (8925), 2693 states have call predecessors, (8925), 2692 states have return successors, (8921), 8766 states have call predecessors, (8921), 8921 states have call successors, (8921) [2022-11-03 04:08:35,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29780 states to 29780 states and 41582 transitions. [2022-11-03 04:08:35,278 INFO L78 Accepts]: Start accepts. Automaton has 29780 states and 41582 transitions. Word has length 790 [2022-11-03 04:08:35,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:35,284 INFO L495 AbstractCegarLoop]: Abstraction has 29780 states and 41582 transitions. [2022-11-03 04:08:35,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-03 04:08:35,285 INFO L276 IsEmpty]: Start isEmpty. Operand 29780 states and 41582 transitions. [2022-11-03 04:08:35,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2022-11-03 04:08:35,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:35,305 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:35,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 04:08:35,306 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:08:35,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:35,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1462882991, now seen corresponding path program 1 times [2022-11-03 04:08:35,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:08:35,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689689056] [2022-11-03 04:08:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:35,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:08:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:36,026 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-03 04:08:36,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:08:36,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689689056] [2022-11-03 04:08:36,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689689056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:36,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:36,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:08:36,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244734116] [2022-11-03 04:08:36,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:36,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:08:36,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:08:36,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:08:36,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:36,031 INFO L87 Difference]: Start difference. First operand 29780 states and 41582 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-03 04:08:39,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:39,289 INFO L93 Difference]: Finished difference Result 87034 states and 121227 transitions. [2022-11-03 04:08:39,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:08:39,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 793 [2022-11-03 04:08:39,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:39,866 INFO L225 Difference]: With dead ends: 87034 [2022-11-03 04:08:39,866 INFO L226 Difference]: Without dead ends: 57403 [2022-11-03 04:08:40,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:40,009 INFO L413 NwaCegarLoop]: 1993 mSDtfsCounter, 1313 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 3420 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:40,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1313 Valid, 3420 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 04:08:40,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57403 states. [2022-11-03 04:08:43,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57403 to 57384. [2022-11-03 04:08:43,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57384 states, 35047 states have (on average 1.3044197791537078) internal successors, (45716), 35756 states have internal predecessors, (45716), 16986 states have call successors, (16986), 5349 states have call predecessors, (16986), 5348 states have return successors, (16982), 16667 states have call predecessors, (16982), 16982 states have call successors, (16982) [2022-11-03 04:08:44,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57384 states to 57384 states and 79684 transitions. [2022-11-03 04:08:44,200 INFO L78 Accepts]: Start accepts. Automaton has 57384 states and 79684 transitions. Word has length 793 [2022-11-03 04:08:44,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:44,202 INFO L495 AbstractCegarLoop]: Abstraction has 57384 states and 79684 transitions. [2022-11-03 04:08:44,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-03 04:08:44,203 INFO L276 IsEmpty]: Start isEmpty. Operand 57384 states and 79684 transitions. [2022-11-03 04:08:44,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2022-11-03 04:08:44,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:44,215 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:44,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 04:08:44,216 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:08:44,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:44,217 INFO L85 PathProgramCache]: Analyzing trace with hash 457634774, now seen corresponding path program 1 times [2022-11-03 04:08:44,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:08:44,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872751069] [2022-11-03 04:08:44,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:44,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:08:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-03 04:08:45,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:08:45,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872751069] [2022-11-03 04:08:45,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872751069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:45,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:45,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:08:45,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139478869] [2022-11-03 04:08:45,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:45,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:08:45,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:08:45,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:08:45,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:45,093 INFO L87 Difference]: Start difference. First operand 57384 states and 79684 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-03 04:08:50,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:50,422 INFO L93 Difference]: Finished difference Result 168482 states and 233399 transitions. [2022-11-03 04:08:50,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:08:50,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 794 [2022-11-03 04:08:50,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:51,095 INFO L225 Difference]: With dead ends: 168482 [2022-11-03 04:08:51,095 INFO L226 Difference]: Without dead ends: 111247 [2022-11-03 04:08:51,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:51,313 INFO L413 NwaCegarLoop]: 2041 mSDtfsCounter, 1312 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 3468 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:51,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 3468 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 04:08:51,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111247 states. [2022-11-03 04:08:56,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111247 to 111228. [2022-11-03 04:08:56,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111228 states, 68046 states have (on average 1.3014725332863064) internal successors, (88560), 69459 states have internal predecessors, (88560), 32519 states have call successors, (32519), 10661 states have call predecessors, (32519), 10660 states have return successors, (32515), 31880 states have call predecessors, (32515), 32515 states have call successors, (32515) [2022-11-03 04:08:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111228 states to 111228 states and 153594 transitions. [2022-11-03 04:08:57,752 INFO L78 Accepts]: Start accepts. Automaton has 111228 states and 153594 transitions. Word has length 794 [2022-11-03 04:08:57,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:57,754 INFO L495 AbstractCegarLoop]: Abstraction has 111228 states and 153594 transitions. [2022-11-03 04:08:57,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-03 04:08:57,754 INFO L276 IsEmpty]: Start isEmpty. Operand 111228 states and 153594 transitions. [2022-11-03 04:08:57,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2022-11-03 04:08:57,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:57,770 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:57,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 04:08:57,771 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:08:57,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:57,772 INFO L85 PathProgramCache]: Analyzing trace with hash 399920504, now seen corresponding path program 1 times [2022-11-03 04:08:57,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:08:57,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400600156] [2022-11-03 04:08:57,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:57,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:08:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:58,358 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-03 04:08:58,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:08:58,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400600156] [2022-11-03 04:08:58,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400600156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:58,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:58,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:08:58,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927005378] [2022-11-03 04:08:58,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:58,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:08:58,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:08:58,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:08:58,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:58,362 INFO L87 Difference]: Start difference. First operand 111228 states and 153594 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81)