./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82b87ec-19f2-4041-b654-fa3aac57bdb9/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82b87ec-19f2-4041-b654-fa3aac57bdb9/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82b87ec-19f2-4041-b654-fa3aac57bdb9/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82b87ec-19f2-4041-b654-fa3aac57bdb9/bin/utaipan-eEHZpOm5b7/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_c82b87ec-19f2-4041-b654-fa3aac57bdb9/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82b87ec-19f2-4041-b654-fa3aac57bdb9/bin/utaipan-eEHZpOm5b7 --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 --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:36:12,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:36:12,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:36:12,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:36:12,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:36:12,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:36:12,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:36:12,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:36:12,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:36:12,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:36:12,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:36:12,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:36:12,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:36:12,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:36:12,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:36:12,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:36:12,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:36:12,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:36:12,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:36:12,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:36:12,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:36:12,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:36:12,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:36:12,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:36:12,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:36:12,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:36:12,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:36:12,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:36:12,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:36:12,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:36:12,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:36:12,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:36:12,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:36:12,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:36:12,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:36:12,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:36:12,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:36:12,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:36:12,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:36:12,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:36:12,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:36:12,281 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82b87ec-19f2-4041-b654-fa3aac57bdb9/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:36:12,327 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:36:12,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:36:12,331 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:36:12,331 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:36:12,332 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:36:12,332 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:36:12,332 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:36:12,333 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:36:12,333 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:36:12,333 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:36:12,334 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:36:12,334 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:36:12,334 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:36:12,335 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:36:12,335 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:36:12,335 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:36:12,335 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:36:12,335 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:36:12,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:36:12,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:36:12,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:36:12,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:36:12,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:36:12,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:36:12,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:36:12,358 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:36:12,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:36:12,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:36:12,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:36:12,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:36:12,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:36:12,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:36:12,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:36:12,362 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:36:12,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:36:12,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:36:12,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:36:12,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:36:12,363 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_c82b87ec-19f2-4041-b654-fa3aac57bdb9/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82b87ec-19f2-4041-b654-fa3aac57bdb9/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71a59a3596571aa79fb44a527a9b6a33b40c9acdae164ed96a4388ebcdf2e0df [2021-11-25 19:36:12,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:36:12,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:36:12,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:36:12,674 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:36:12,674 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:36:12,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82b87ec-19f2-4041-b654-fa3aac57bdb9/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2021-11-25 19:36:12,743 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82b87ec-19f2-4041-b654-fa3aac57bdb9/bin/utaipan-eEHZpOm5b7/data/7d1e31b55/c2b2d8c7c3e14414934cbc56f4e4a5a4/FLAGdc0e77f62 [2021-11-25 19:36:13,652 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:36:13,652 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82b87ec-19f2-4041-b654-fa3aac57bdb9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2021-11-25 19:36:13,701 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82b87ec-19f2-4041-b654-fa3aac57bdb9/bin/utaipan-eEHZpOm5b7/data/7d1e31b55/c2b2d8c7c3e14414934cbc56f4e4a5a4/FLAGdc0e77f62 [2021-11-25 19:36:14,091 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82b87ec-19f2-4041-b654-fa3aac57bdb9/bin/utaipan-eEHZpOm5b7/data/7d1e31b55/c2b2d8c7c3e14414934cbc56f4e4a5a4 [2021-11-25 19:36:14,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:36:14,095 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:36:14,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:36:14,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:36:14,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:36:14,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:36:14" (1/1) ... [2021-11-25 19:36:14,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c658826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:14, skipping insertion in model container [2021-11-25 19:36:14,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:36:14" (1/1) ... [2021-11-25 19:36:14,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:36:14,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:36:16,317 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_c82b87ec-19f2-4041-b654-fa3aac57bdb9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311030,311043] [2021-11-25 19:36:16,319 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_c82b87ec-19f2-4041-b654-fa3aac57bdb9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311196,311209] [2021-11-25 19:36:16,319 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_c82b87ec-19f2-4041-b654-fa3aac57bdb9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311360,311373] [2021-11-25 19:36:16,320 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_c82b87ec-19f2-4041-b654-fa3aac57bdb9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311525,311538] [2021-11-25 19:36:16,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:36:16,371 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:36:16,723 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_c82b87ec-19f2-4041-b654-fa3aac57bdb9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311030,311043] [2021-11-25 19:36:16,723 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_c82b87ec-19f2-4041-b654-fa3aac57bdb9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311196,311209] [2021-11-25 19:36:16,724 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_c82b87ec-19f2-4041-b654-fa3aac57bdb9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311360,311373] [2021-11-25 19:36:16,724 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_c82b87ec-19f2-4041-b654-fa3aac57bdb9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311525,311538] [2021-11-25 19:36:16,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:36:16,889 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:36:16,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:16 WrapperNode [2021-11-25 19:36:16,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:36:16,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:36:16,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:36:16,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:36:16,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:16" (1/1) ... [2021-11-25 19:36:17,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:16" (1/1) ... [2021-11-25 19:36:17,166 INFO L137 Inliner]: procedures = 289, calls = 1070, calls flagged for inlining = 163, calls inlined = 153, statements flattened = 3446 [2021-11-25 19:36:17,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:36:17,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:36:17,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:36:17,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:36:17,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:16" (1/1) ... [2021-11-25 19:36:17,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:16" (1/1) ... [2021-11-25 19:36:17,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:16" (1/1) ... [2021-11-25 19:36:17,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:16" (1/1) ... [2021-11-25 19:36:17,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:16" (1/1) ... [2021-11-25 19:36:17,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:16" (1/1) ... [2021-11-25 19:36:17,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:16" (1/1) ... [2021-11-25 19:36:17,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:36:17,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:36:17,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:36:17,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:36:17,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:16" (1/1) ... [2021-11-25 19:36:17,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:36:17,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82b87ec-19f2-4041-b654-fa3aac57bdb9/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:36:17,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82b87ec-19f2-4041-b654-fa3aac57bdb9/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:36:17,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82b87ec-19f2-4041-b654-fa3aac57bdb9/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:36:17,531 INFO L130 BoogieDeclarations]: Found specification of procedure show_enabled [2021-11-25 19:36:17,531 INFO L138 BoogieDeclarations]: Found implementation of procedure show_enabled [2021-11-25 19:36:17,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdevice_notifier [2021-11-25 19:36:17,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdevice_notifier [2021-11-25 19:36:17,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 19:36:17,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:36:17,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 19:36:17,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 19:36:17,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 19:36:17,532 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 19:36:17,532 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_mac [2021-11-25 19:36:17,533 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_mac [2021-11-25 19:36:17,533 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_put [2021-11-25 19:36:17,533 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_put [2021-11-25 19:36:17,533 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_ip [2021-11-25 19:36:17,533 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_ip [2021-11-25 19:36:17,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:36:17,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:36:17,534 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-25 19:36:17,534 INFO L130 BoogieDeclarations]: Found specification of procedure show_dev_name [2021-11-25 19:36:17,534 INFO L138 BoogieDeclarations]: Found implementation of procedure show_dev_name [2021-11-25 19:36:17,534 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice_notifier [2021-11-25 19:36:17,534 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdevice_notifier [2021-11-25 19:36:17,534 INFO L130 BoogieDeclarations]: Found specification of procedure drop_netconsole_target [2021-11-25 19:36:17,535 INFO L138 BoogieDeclarations]: Found implementation of procedure drop_netconsole_target [2021-11-25 19:36:17,535 INFO L130 BoogieDeclarations]: Found specification of procedure free_param_target [2021-11-25 19:36:17,535 INFO L138 BoogieDeclarations]: Found implementation of procedure free_param_target [2021-11-25 19:36:17,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:36:17,535 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:36:17,535 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_get [2021-11-25 19:36:17,535 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_get [2021-11-25 19:36:17,536 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_mac [2021-11-25 19:36:17,536 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_mac [2021-11-25 19:36:17,536 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_ip [2021-11-25 19:36:17,536 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_ip [2021-11-25 19:36:17,536 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 19:36:17,536 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 19:36:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-25 19:36:17,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-25 19:36:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_netconsole_target [2021-11-25 19:36:17,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_netconsole_target [2021-11-25 19:36:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:36:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:36:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 19:36:17,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 19:36:17,539 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 19:36:17,540 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 19:36:17,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 19:36:17,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 19:36:17,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 19:36:17,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 19:36:17,540 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 19:36:17,540 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 19:36:17,541 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_release [2021-11-25 19:36:17,541 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_release [2021-11-25 19:36:17,541 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_attr_show [2021-11-25 19:36:17,541 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_attr_show [2021-11-25 19:36:17,541 INFO L130 BoogieDeclarations]: Found specification of procedure make_netconsole_target [2021-11-25 19:36:17,541 INFO L138 BoogieDeclarations]: Found implementation of procedure make_netconsole_target [2021-11-25 19:36:17,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:36:17,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:36:17,542 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_cleanup [2021-11-25 19:36:17,542 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_cleanup [2021-11-25 19:36:17,542 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_setup [2021-11-25 19:36:17,542 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_setup [2021-11-25 19:36:17,542 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-25 19:36:17,543 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-25 19:36:17,543 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 19:36:17,543 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 19:36:17,543 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-25 19:36:17,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-25 19:36:17,544 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-25 19:36:17,544 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-25 19:36:17,544 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_port [2021-11-25 19:36:17,544 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_port [2021-11-25 19:36:17,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 19:36:17,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 19:36:17,545 INFO L130 BoogieDeclarations]: Found specification of procedure strnchr [2021-11-25 19:36:17,545 INFO L138 BoogieDeclarations]: Found implementation of procedure strnchr [2021-11-25 19:36:17,545 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtou16 [2021-11-25 19:36:17,545 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtou16 [2021-11-25 19:36:17,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 19:36:17,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 19:36:17,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 19:36:17,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:36:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 19:36:17,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 19:36:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:36:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 19:36:17,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 19:36:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure store_enabled [2021-11-25 19:36:17,548 INFO L138 BoogieDeclarations]: Found implementation of procedure store_enabled [2021-11-25 19:36:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_ip [2021-11-25 19:36:17,548 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_ip [2021-11-25 19:36:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-25 19:36:17,548 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2021-11-25 19:36:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_cleanup_netconsole_14_2 [2021-11-25 19:36:17,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_cleanup_netconsole_14_2 [2021-11-25 19:36:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 19:36:17,549 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 19:36:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure to_target [2021-11-25 19:36:17,549 INFO L138 BoogieDeclarations]: Found implementation of procedure to_target [2021-11-25 19:36:17,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 19:36:17,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 19:36:17,550 INFO L130 BoogieDeclarations]: Found specification of procedure config_item_put [2021-11-25 19:36:17,551 INFO L138 BoogieDeclarations]: Found implementation of procedure config_item_put [2021-11-25 19:36:17,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:36:17,554 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_mac [2021-11-25 19:36:17,554 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_mac [2021-11-25 19:36:17,555 INFO L130 BoogieDeclarations]: Found specification of procedure in6_pton [2021-11-25 19:36:17,555 INFO L138 BoogieDeclarations]: Found implementation of procedure in6_pton [2021-11-25 19:36:17,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:36:17,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 19:36:17,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 19:36:17,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:36:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 19:36:17,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 19:36:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:36:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 19:36:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure store_local_ip [2021-11-25 19:36:17,563 INFO L138 BoogieDeclarations]: Found implementation of procedure store_local_ip [2021-11-25 19:36:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure in_aton [2021-11-25 19:36:17,563 INFO L138 BoogieDeclarations]: Found implementation of procedure in_aton [2021-11-25 19:36:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 19:36:17,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 19:36:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-25 19:36:17,563 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-25 19:36:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure store_dev_name [2021-11-25 19:36:17,563 INFO L138 BoogieDeclarations]: Found implementation of procedure store_dev_name [2021-11-25 19:36:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_port [2021-11-25 19:36:17,564 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_port [2021-11-25 19:36:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_attr_store [2021-11-25 19:36:17,564 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_attr_store [2021-11-25 19:36:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:36:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure store_local_port [2021-11-25 19:36:17,564 INFO L138 BoogieDeclarations]: Found implementation of procedure store_local_port [2021-11-25 19:36:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 19:36:17,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 19:36:17,565 INFO L130 BoogieDeclarations]: Found specification of procedure config_item_name [2021-11-25 19:36:17,565 INFO L138 BoogieDeclarations]: Found implementation of procedure config_item_name [2021-11-25 19:36:17,565 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_port [2021-11-25 19:36:17,565 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_port [2021-11-25 19:36:17,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:36:17,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:36:18,406 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:36:18,410 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:36:18,530 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 19:36:20,776 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 19:36:20,880 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:36:21,354 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:36:21,354 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-25 19:36:21,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:36:21 BoogieIcfgContainer [2021-11-25 19:36:21,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:36:21,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:36:21,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:36:21,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:36:21,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:36:14" (1/3) ... [2021-11-25 19:36:21,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@455f986a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:36:21, skipping insertion in model container [2021-11-25 19:36:21,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:16" (2/3) ... [2021-11-25 19:36:21,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@455f986a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:36:21, skipping insertion in model container [2021-11-25 19:36:21,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:36:21" (3/3) ... [2021-11-25 19:36:21,369 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2021-11-25 19:36:21,375 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:36:21,375 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 19:36:21,448 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:36:21,463 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:36:21,466 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 19:36:21,530 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) [2021-11-25 19:36:21,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2021-11-25 19:36:21,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:21,596 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:36:21,596 INFO L402 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)] === [2021-11-25 19:36:21,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:21,602 INFO L85 PathProgramCache]: Analyzing trace with hash 228936648, now seen corresponding path program 1 times [2021-11-25 19:36:21,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:21,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421108539] [2021-11-25 19:36:21,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:21,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21756 trivial. 0 not checked. [2021-11-25 19:36:22,855 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:22,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421108539] [2021-11-25 19:36:22,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421108539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:22,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:36:22,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:36:22,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509237757] [2021-11-25 19:36:22,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:22,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:36:22,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:22,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:36:22,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:36:22,897 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) [2021-11-25 19:36:23,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:23,605 INFO L93 Difference]: Finished difference Result 2950 states and 4346 transitions. [2021-11-25 19:36:23,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:36:23,608 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 [2021-11-25 19:36:23,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:23,641 INFO L225 Difference]: With dead ends: 2950 [2021-11-25 19:36:23,641 INFO L226 Difference]: Without dead ends: 1966 [2021-11-25 19:36:23,655 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:36:23,657 INFO L933 BasicCegarLoop]: 1742 mSDtfsCounter, 1340 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:23,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1340 Valid, 3111 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:36:23,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2021-11-25 19:36:23,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1962. [2021-11-25 19:36:23,858 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) [2021-11-25 19:36:23,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2860 transitions. [2021-11-25 19:36:23,880 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2860 transitions. Word has length 761 [2021-11-25 19:36:23,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:23,883 INFO L470 AbstractCegarLoop]: Abstraction has 1962 states and 2860 transitions. [2021-11-25 19:36:23,884 INFO L471 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) [2021-11-25 19:36:23,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2860 transitions. [2021-11-25 19:36:23,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2021-11-25 19:36:23,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:23,917 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:36:23,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:36:23,917 INFO L402 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)] === [2021-11-25 19:36:23,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:23,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1624430654, now seen corresponding path program 1 times [2021-11-25 19:36:23,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:23,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257432946] [2021-11-25 19:36:23,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:23,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:24,497 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2021-11-25 19:36:24,498 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:24,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257432946] [2021-11-25 19:36:24,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257432946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:24,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:36:24,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:36:24,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624347899] [2021-11-25 19:36:24,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:24,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:36:24,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:24,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:36:24,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:36:24,503 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) [2021-11-25 19:36:25,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:25,129 INFO L93 Difference]: Finished difference Result 4724 states and 6830 transitions. [2021-11-25 19:36:25,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:36:25,130 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 [2021-11-25 19:36:25,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:25,157 INFO L225 Difference]: With dead ends: 4724 [2021-11-25 19:36:25,158 INFO L226 Difference]: Without dead ends: 2911 [2021-11-25 19:36:25,212 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:36:25,214 INFO L933 BasicCegarLoop]: 1753 mSDtfsCounter, 1318 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:25,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1318 Valid, 3180 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:36:25,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2021-11-25 19:36:25,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2892. [2021-11-25 19:36:25,453 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) [2021-11-25 19:36:25,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 4164 transitions. [2021-11-25 19:36:25,484 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 4164 transitions. Word has length 788 [2021-11-25 19:36:25,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:25,486 INFO L470 AbstractCegarLoop]: Abstraction has 2892 states and 4164 transitions. [2021-11-25 19:36:25,487 INFO L471 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) [2021-11-25 19:36:25,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 4164 transitions. [2021-11-25 19:36:25,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2021-11-25 19:36:25,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:25,526 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:36:25,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:36:25,527 INFO L402 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)] === [2021-11-25 19:36:25,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:25,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1249087455, now seen corresponding path program 1 times [2021-11-25 19:36:25,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:25,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687066068] [2021-11-25 19:36:25,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:25,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:26,090 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2021-11-25 19:36:26,091 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:26,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687066068] [2021-11-25 19:36:26,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687066068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:26,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:36:26,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:36:26,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53939265] [2021-11-25 19:36:26,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:26,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:36:26,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:26,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:36:26,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:36:26,096 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) [2021-11-25 19:36:26,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:26,831 INFO L93 Difference]: Finished difference Result 7514 states and 10747 transitions. [2021-11-25 19:36:26,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:36:26,832 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 [2021-11-25 19:36:26,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:26,877 INFO L225 Difference]: With dead ends: 7514 [2021-11-25 19:36:26,878 INFO L226 Difference]: Without dead ends: 4771 [2021-11-25 19:36:26,892 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:36:26,898 INFO L933 BasicCegarLoop]: 1781 mSDtfsCounter, 1317 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:26,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1317 Valid, 3208 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:36:26,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4771 states. [2021-11-25 19:36:27,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4771 to 4752. [2021-11-25 19:36:27,179 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) [2021-11-25 19:36:27,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 6772 transitions. [2021-11-25 19:36:27,210 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 6772 transitions. Word has length 789 [2021-11-25 19:36:27,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:27,212 INFO L470 AbstractCegarLoop]: Abstraction has 4752 states and 6772 transitions. [2021-11-25 19:36:27,212 INFO L471 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) [2021-11-25 19:36:27,213 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 6772 transitions. [2021-11-25 19:36:27,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2021-11-25 19:36:27,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:27,225 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:36:27,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:36:27,226 INFO L402 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)] === [2021-11-25 19:36:27,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:27,227 INFO L85 PathProgramCache]: Analyzing trace with hash -585860028, now seen corresponding path program 1 times [2021-11-25 19:36:27,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:27,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993089313] [2021-11-25 19:36:27,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:27,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:27,720 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2021-11-25 19:36:27,720 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:27,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993089313] [2021-11-25 19:36:27,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993089313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:27,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:36:27,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:36:27,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253142508] [2021-11-25 19:36:27,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:27,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:36:27,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:27,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:36:27,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:36:27,724 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) [2021-11-25 19:36:28,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:28,554 INFO L93 Difference]: Finished difference Result 13050 states and 18507 transitions. [2021-11-25 19:36:28,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:36:28,555 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 [2021-11-25 19:36:28,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:28,624 INFO L225 Difference]: With dead ends: 13050 [2021-11-25 19:36:28,625 INFO L226 Difference]: Without dead ends: 8447 [2021-11-25 19:36:28,653 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:36:28,661 INFO L933 BasicCegarLoop]: 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 [2021-11-25 19:36:28,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 3276 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:36:28,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8447 states. [2021-11-25 19:36:29,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8447 to 8428. [2021-11-25 19:36:29,213 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) [2021-11-25 19:36:29,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8428 states to 8428 states and 11914 transitions. [2021-11-25 19:36:29,272 INFO L78 Accepts]: Start accepts. Automaton has 8428 states and 11914 transitions. Word has length 792 [2021-11-25 19:36:29,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:29,273 INFO L470 AbstractCegarLoop]: Abstraction has 8428 states and 11914 transitions. [2021-11-25 19:36:29,274 INFO L471 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) [2021-11-25 19:36:29,275 INFO L276 IsEmpty]: Start isEmpty. Operand 8428 states and 11914 transitions. [2021-11-25 19:36:29,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2021-11-25 19:36:29,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:29,286 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:36:29,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:36:29,287 INFO L402 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)] === [2021-11-25 19:36:29,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:29,288 INFO L85 PathProgramCache]: Analyzing trace with hash 364942462, now seen corresponding path program 1 times [2021-11-25 19:36:29,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:29,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741155202] [2021-11-25 19:36:29,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:29,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2021-11-25 19:36:29,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:29,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741155202] [2021-11-25 19:36:29,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741155202] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:29,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:36:29,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:36:29,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108613930] [2021-11-25 19:36:29,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:29,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:36:29,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:29,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:36:29,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:36:29,766 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) [2021-11-25 19:36:30,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:30,965 INFO L93 Difference]: Finished difference Result 23946 states and 33731 transitions. [2021-11-25 19:36:30,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:36:30,966 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 [2021-11-25 19:36:30,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:31,185 INFO L225 Difference]: With dead ends: 23946 [2021-11-25 19:36:31,185 INFO L226 Difference]: Without dead ends: 15667 [2021-11-25 19:36:31,227 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:36:31,229 INFO L933 BasicCegarLoop]: 1897 mSDtfsCounter, 1315 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:31,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1315 Valid, 3324 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:36:31,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15667 states. [2021-11-25 19:36:32,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15667 to 15648. [2021-11-25 19:36:32,061 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) [2021-11-25 19:36:32,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15648 states to 15648 states and 21976 transitions. [2021-11-25 19:36:32,166 INFO L78 Accepts]: Start accepts. Automaton has 15648 states and 21976 transitions. Word has length 791 [2021-11-25 19:36:32,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:32,168 INFO L470 AbstractCegarLoop]: Abstraction has 15648 states and 21976 transitions. [2021-11-25 19:36:32,168 INFO L471 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) [2021-11-25 19:36:32,168 INFO L276 IsEmpty]: Start isEmpty. Operand 15648 states and 21976 transitions. [2021-11-25 19:36:32,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2021-11-25 19:36:32,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:32,180 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:36:32,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:36:32,180 INFO L402 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)] === [2021-11-25 19:36:32,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:32,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1609922599, now seen corresponding path program 1 times [2021-11-25 19:36:32,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:32,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810196922] [2021-11-25 19:36:32,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:32,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:32,778 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2021-11-25 19:36:32,778 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:32,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810196922] [2021-11-25 19:36:32,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810196922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:32,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:36:32,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:36:32,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549385477] [2021-11-25 19:36:32,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:32,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:36:32,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:32,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:36:32,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:36:32,782 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) [2021-11-25 19:36:34,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:34,347 INFO L93 Difference]: Finished difference Result 45298 states and 63439 transitions. [2021-11-25 19:36:34,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:36:34,349 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 [2021-11-25 19:36:34,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:34,666 INFO L225 Difference]: With dead ends: 45298 [2021-11-25 19:36:34,666 INFO L226 Difference]: Without dead ends: 29799 [2021-11-25 19:36:34,729 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:36:34,730 INFO L933 BasicCegarLoop]: 1944 mSDtfsCounter, 1316 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:34,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1316 Valid, 3371 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:36:34,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29799 states. [2021-11-25 19:36:36,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29799 to 29780. [2021-11-25 19:36:36,514 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) [2021-11-25 19:36:36,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29780 states to 29780 states and 41582 transitions. [2021-11-25 19:36:36,690 INFO L78 Accepts]: Start accepts. Automaton has 29780 states and 41582 transitions. Word has length 790 [2021-11-25 19:36:36,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:36,692 INFO L470 AbstractCegarLoop]: Abstraction has 29780 states and 41582 transitions. [2021-11-25 19:36:36,692 INFO L471 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) [2021-11-25 19:36:36,692 INFO L276 IsEmpty]: Start isEmpty. Operand 29780 states and 41582 transitions. [2021-11-25 19:36:36,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2021-11-25 19:36:36,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:36,703 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:36:36,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:36:36,704 INFO L402 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)] === [2021-11-25 19:36:36,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:36,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1462882991, now seen corresponding path program 1 times [2021-11-25 19:36:36,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:36,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589497749] [2021-11-25 19:36:36,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:36,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2021-11-25 19:36:37,214 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:37,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589497749] [2021-11-25 19:36:37,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589497749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:37,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:36:37,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:36:37,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505291681] [2021-11-25 19:36:37,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:37,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:36:37,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:37,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:36:37,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:36:37,218 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) [2021-11-25 19:36:39,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:39,700 INFO L93 Difference]: Finished difference Result 87034 states and 121227 transitions. [2021-11-25 19:36:39,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:36:39,701 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 [2021-11-25 19:36:39,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:40,133 INFO L225 Difference]: With dead ends: 87034 [2021-11-25 19:36:40,133 INFO L226 Difference]: Without dead ends: 57403 [2021-11-25 19:36:40,232 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:36:40,234 INFO L933 BasicCegarLoop]: 1993 mSDtfsCounter, 1313 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:40,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1313 Valid, 3420 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:36:40,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57403 states. [2021-11-25 19:36:43,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57403 to 57384. [2021-11-25 19:36:43,322 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) [2021-11-25 19:36:43,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57384 states to 57384 states and 79684 transitions. [2021-11-25 19:36:43,600 INFO L78 Accepts]: Start accepts. Automaton has 57384 states and 79684 transitions. Word has length 793 [2021-11-25 19:36:43,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:43,602 INFO L470 AbstractCegarLoop]: Abstraction has 57384 states and 79684 transitions. [2021-11-25 19:36:43,602 INFO L471 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) [2021-11-25 19:36:43,602 INFO L276 IsEmpty]: Start isEmpty. Operand 57384 states and 79684 transitions. [2021-11-25 19:36:43,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2021-11-25 19:36:43,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:43,613 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:36:43,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:36:43,614 INFO L402 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)] === [2021-11-25 19:36:43,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:43,615 INFO L85 PathProgramCache]: Analyzing trace with hash 457634774, now seen corresponding path program 1 times [2021-11-25 19:36:43,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:43,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286430724] [2021-11-25 19:36:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:43,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:44,006 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2021-11-25 19:36:44,006 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:44,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286430724] [2021-11-25 19:36:44,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286430724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:44,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:36:44,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:36:44,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260281370] [2021-11-25 19:36:44,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:44,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:36:44,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:44,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:36:44,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:36:44,010 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) [2021-11-25 19:36:47,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:47,571 INFO L93 Difference]: Finished difference Result 168482 states and 233399 transitions. [2021-11-25 19:36:47,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:36:47,572 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 [2021-11-25 19:36:47,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:48,519 INFO L225 Difference]: With dead ends: 168482 [2021-11-25 19:36:48,519 INFO L226 Difference]: Without dead ends: 111247 [2021-11-25 19:36:48,744 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:36:48,745 INFO L933 BasicCegarLoop]: 2041 mSDtfsCounter, 1312 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:48,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1312 Valid, 3468 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:36:48,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111247 states. [2021-11-25 19:36:53,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111247 to 111228. [2021-11-25 19:36:53,310 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) [2021-11-25 19:36:53,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111228 states to 111228 states and 153594 transitions. [2021-11-25 19:36:53,790 INFO L78 Accepts]: Start accepts. Automaton has 111228 states and 153594 transitions. Word has length 794 [2021-11-25 19:36:53,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:53,792 INFO L470 AbstractCegarLoop]: Abstraction has 111228 states and 153594 transitions. [2021-11-25 19:36:53,793 INFO L471 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) [2021-11-25 19:36:53,793 INFO L276 IsEmpty]: Start isEmpty. Operand 111228 states and 153594 transitions. [2021-11-25 19:36:53,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2021-11-25 19:36:53,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:53,804 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:36:53,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:36:53,804 INFO L402 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)] === [2021-11-25 19:36:53,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:53,805 INFO L85 PathProgramCache]: Analyzing trace with hash 399920504, now seen corresponding path program 1 times [2021-11-25 19:36:53,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:53,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51456572] [2021-11-25 19:36:53,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:53,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2021-11-25 19:36:54,192 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:54,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51456572] [2021-11-25 19:36:54,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51456572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:54,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:36:54,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:36:54,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902310018] [2021-11-25 19:36:54,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:54,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:36:54,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:54,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:36:54,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:36:54,196 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) [2021-11-25 19:37:00,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:37:00,442 INFO L93 Difference]: Finished difference Result 326698 states and 450064 transitions. [2021-11-25 19:37:00,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:37:00,449 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 795 [2021-11-25 19:37:00,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:37:01,731 INFO L225 Difference]: With dead ends: 326698 [2021-11-25 19:37:01,731 INFO L226 Difference]: Without dead ends: 215619 [2021-11-25 19:37:02,608 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:37:02,609 INFO L933 BasicCegarLoop]: 2329 mSDtfsCounter, 1311 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 3756 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:37:02,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1311 Valid, 3756 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 19:37:02,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215619 states.