./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-media-pci-cx88-cx8800.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_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/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_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/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_50acf814-4ba3-46b7-ba12-deb8a3d312e7/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 4dc730f52c640d2c8e3cb7b93e5d1f8c1973029db6cd19ab3f75108e9e7f0634 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:21:19,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:21:19,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:21:19,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:21:19,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:21:19,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:21:19,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:21:19,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:21:19,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:21:19,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:21:19,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:21:19,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:21:19,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:21:19,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:21:19,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:21:19,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:21:19,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:21:19,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:21:19,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:21:19,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:21:19,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:21:19,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:21:19,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:21:19,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:21:19,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:21:19,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:21:19,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:21:19,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:21:19,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:21:19,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:21:19,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:21:19,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:21:19,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:21:19,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:21:19,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:21:19,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:21:19,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:21:19,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:21:19,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:21:19,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:21:19,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:21:19,961 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:21:19,986 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:21:19,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:21:19,986 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:21:19,987 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:21:19,987 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:21:19,987 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:21:19,988 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:21:19,988 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:21:19,988 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:21:19,988 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:21:19,988 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:21:19,989 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:21:19,989 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:21:19,989 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:21:19,989 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:21:19,989 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:21:19,990 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:21:19,990 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:21:19,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:21:19,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:21:19,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:21:19,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:21:19,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:21:19,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:21:19,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:21:19,992 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:21:19,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:21:19,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:21:19,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:21:19,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:21:19,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:21:19,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:21:19,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:21:19,993 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:21:19,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:21:19,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:21:19,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:21:19,994 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:21:19,994 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_50acf814-4ba3-46b7-ba12-deb8a3d312e7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4dc730f52c640d2c8e3cb7b93e5d1f8c1973029db6cd19ab3f75108e9e7f0634 [2021-11-25 20:21:20,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:21:20,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:21:20,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:21:20,237 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:21:20,237 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:21:20,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i [2021-11-25 20:21:20,312 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7/data/27b04b3d7/db1828c7b3a341b38ae97d7815420571/FLAG5bf288327 [2021-11-25 20:21:21,416 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:21:21,417 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i [2021-11-25 20:21:21,494 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7/data/27b04b3d7/db1828c7b3a341b38ae97d7815420571/FLAG5bf288327 [2021-11-25 20:21:21,733 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7/data/27b04b3d7/db1828c7b3a341b38ae97d7815420571 [2021-11-25 20:21:21,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:21:21,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:21:21,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:21:21,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:21:21,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:21:21,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:21:21" (1/1) ... [2021-11-25 20:21:21,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a889795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:21, skipping insertion in model container [2021-11-25 20:21:21,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:21:21" (1/1) ... [2021-11-25 20:21:21,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:21:21,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:21:26,042 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_50acf814-4ba3-46b7-ba12-deb8a3d312e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[570903,570916] [2021-11-25 20:21:26,044 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_50acf814-4ba3-46b7-ba12-deb8a3d312e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[571069,571082] [2021-11-25 20:21:26,045 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_50acf814-4ba3-46b7-ba12-deb8a3d312e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[571233,571246] [2021-11-25 20:21:26,046 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_50acf814-4ba3-46b7-ba12-deb8a3d312e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[571398,571411] [2021-11-25 20:21:26,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:21:26,173 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:21:27,043 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_50acf814-4ba3-46b7-ba12-deb8a3d312e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[570903,570916] [2021-11-25 20:21:27,043 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_50acf814-4ba3-46b7-ba12-deb8a3d312e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[571069,571082] [2021-11-25 20:21:27,044 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_50acf814-4ba3-46b7-ba12-deb8a3d312e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[571233,571246] [2021-11-25 20:21:27,044 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_50acf814-4ba3-46b7-ba12-deb8a3d312e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[571398,571411] [2021-11-25 20:21:27,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:21:27,244 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:21:27,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:27 WrapperNode [2021-11-25 20:21:27,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:21:27,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:21:27,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:21:27,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:21:27,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:27" (1/1) ... [2021-11-25 20:21:27,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:27" (1/1) ... [2021-11-25 20:21:27,719 INFO L137 Inliner]: procedures = 489, calls = 4094, calls flagged for inlining = 273, calls inlined = 262, statements flattened = 8614 [2021-11-25 20:21:27,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:21:27,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:21:27,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:21:27,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:21:27,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:27" (1/1) ... [2021-11-25 20:21:27,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:27" (1/1) ... [2021-11-25 20:21:27,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:27" (1/1) ... [2021-11-25 20:21:27,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:27" (1/1) ... [2021-11-25 20:21:28,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:27" (1/1) ... [2021-11-25 20:21:28,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:27" (1/1) ... [2021-11-25 20:21:28,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:27" (1/1) ... [2021-11-25 20:21:28,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:21:28,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:21:28,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:21:28,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:21:28,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:27" (1/1) ... [2021-11-25 20:21:28,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:21:28,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:21:28,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:21:28,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:21:28,522 INFO L130 BoogieDeclarations]: Found specification of procedure video_open [2021-11-25 20:21:28,522 INFO L138 BoogieDeclarations]: Found implementation of procedure video_open [2021-11-25 20:21:28,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 20:21:28,522 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 20:21:28,522 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamon [2021-11-25 20:21:28,523 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamon [2021-11-25 20:21:28,523 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_unregister_video [2021-11-25 20:21:28,523 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_unregister_video [2021-11-25 20:21:28,523 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_fmt_vid_cap [2021-11-25 20:21:28,523 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_fmt_vid_cap [2021-11-25 20:21:28,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 20:21:28,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 20:21:28,524 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_input [2021-11-25 20:21:28,524 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_input [2021-11-25 20:21:28,524 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_reqbufs [2021-11-25 20:21:28,525 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_reqbufs [2021-11-25 20:21:28,525 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_enum_fmt_vid_cap [2021-11-25 20:21:28,525 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_enum_fmt_vid_cap [2021-11-25 20:21:28,525 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 20:21:28,525 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 20:21:28,525 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_tvnorm [2021-11-25 20:21:28,526 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_tvnorm [2021-11-25 20:21:28,526 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_tvaudio [2021-11-25 20:21:28,526 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_tvaudio [2021-11-25 20:21:28,526 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_s_vid_ctrl [2021-11-25 20:21:28,527 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_s_vid_ctrl [2021-11-25 20:21:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure res_free [2021-11-25 20:21:28,527 INFO L138 BoogieDeclarations]: Found implementation of procedure res_free [2021-11-25 20:21:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 20:21:28,527 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 20:21:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_to_dma [2021-11-25 20:21:28,528 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_to_dma [2021-11-25 20:21:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_shutdown [2021-11-25 20:21:28,528 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_shutdown [2021-11-25 20:21:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-25 20:21:28,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-25 20:21:28,529 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fmt_vid_cap [2021-11-25 20:21:28,529 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fmt_vid_cap [2021-11-25 20:21:28,529 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 20:21:28,529 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 20:21:28,530 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_newstation [2021-11-25 20:21:28,530 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_newstation [2021-11-25 20:21:28,530 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_std [2021-11-25 20:21:28,531 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_std [2021-11-25 20:21:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_vdev_init [2021-11-25 20:21:28,532 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_vdev_init [2021-11-25 20:21:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure video_mmap [2021-11-25 20:21:28,532 INFO L138 BoogieDeclarations]: Found implementation of procedure video_mmap [2021-11-25 20:21:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 20:21:28,533 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 20:21:28,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 20:21:28,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 20:21:28,533 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 20:21:28,534 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 20:21:28,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer [2021-11-25 20:21:28,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer [2021-11-25 20:21:28,534 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2021-11-25 20:21:28,535 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2021-11-25 20:21:28,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 20:21:28,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 20:21:28,535 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_poll [2021-11-25 20:21:28,535 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_poll [2021-11-25 20:21:28,535 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_frequency [2021-11-25 20:21:28,536 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_frequency [2021-11-25 20:21:28,536 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querybuf [2021-11-25 20:21:28,536 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querybuf [2021-11-25 20:21:28,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 20:21:28,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 20:21:28,536 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 20:21:28,537 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 20:21:28,537 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_register [2021-11-25 20:21:28,537 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_register [2021-11-25 20:21:28,538 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2021-11-25 20:21:28,538 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2021-11-25 20:21:28,538 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_setup [2021-11-25 20:21:28,538 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_setup [2021-11-25 20:21:28,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:21:28,539 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_stereo [2021-11-25 20:21:28,539 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_stereo [2021-11-25 20:21:28,539 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_vbi_fmt [2021-11-25 20:21:28,540 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_vbi_fmt [2021-11-25 20:21:28,540 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-25 20:21:28,540 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-25 20:21:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_audio_thread [2021-11-25 20:21:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 20:21:28,541 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 20:21:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_cap [2021-11-25 20:21:28,542 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_cap [2021-11-25 20:21:28,542 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2021-11-25 20:21:28,542 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2021-11-25 20:21:28,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 20:21:28,542 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2021-11-25 20:21:28,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2021-11-25 20:21:28,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 20:21:28,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 20:21:28,543 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_restart_vbi_queue [2021-11-25 20:21:28,543 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_restart_vbi_queue [2021-11-25 20:21:28,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_vb_lock_of_videobuf_queue [2021-11-25 20:21:28,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_vb_lock_of_videobuf_queue [2021-11-25 20:21:28,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:21:28,544 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_finidev [2021-11-25 20:21:28,544 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_finidev [2021-11-25 20:21:28,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 20:21:28,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 20:21:28,545 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2021-11-25 20:21:28,546 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2021-11-25 20:21:28,548 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_querycap [2021-11-25 20:21:28,548 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_querycap [2021-11-25 20:21:28,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 20:21:28,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 20:21:28,549 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_freq [2021-11-25 20:21:28,550 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_freq [2021-11-25 20:21:28,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 20:21:28,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 20:21:28,550 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_s_aud_ctrl [2021-11-25 20:21:28,556 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_s_aud_ctrl [2021-11-25 20:21:28,557 INFO L130 BoogieDeclarations]: Found specification of procedure video_read [2021-11-25 20:21:28,557 INFO L138 BoogieDeclarations]: Found implementation of procedure video_read [2021-11-25 20:21:28,557 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-25 20:21:28,557 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-25 20:21:28,557 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_video_mux [2021-11-25 20:21:28,557 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_video_mux [2021-11-25 20:21:28,557 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 20:21:28,558 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 20:21:28,558 INFO L130 BoogieDeclarations]: Found specification of procedure video_is_registered [2021-11-25 20:21:28,558 INFO L138 BoogieDeclarations]: Found implementation of procedure video_is_registered [2021-11-25 20:21:28,558 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2021-11-25 20:21:28,558 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_subscribe_event [2021-11-25 20:21:28,558 INFO L130 BoogieDeclarations]: Found specification of procedure video_unregister_device [2021-11-25 20:21:28,559 INFO L138 BoogieDeclarations]: Found implementation of procedure video_unregister_device [2021-11-25 20:21:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:21:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 20:21:28,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 20:21:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 20:21:28,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 20:21:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 20:21:28,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 20:21:28,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-25 20:21:28,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-25 20:21:28,560 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_queue_sg_init [2021-11-25 20:21:28,560 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_queue_sg_init [2021-11-25 20:21:28,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:21:28,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 20:21:28,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 20:21:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:21:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure video_release [2021-11-25 20:21:28,561 INFO L138 BoogieDeclarations]: Found implementation of procedure video_release [2021-11-25 20:21:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:21:28,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:21:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:21:28,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:21:28,562 INFO L130 BoogieDeclarations]: Found specification of procedure restart_video_queue [2021-11-25 20:21:28,562 INFO L138 BoogieDeclarations]: Found implementation of procedure restart_video_queue [2021-11-25 20:21:28,562 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_qbuf [2021-11-25 20:21:28,562 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_qbuf [2021-11-25 20:21:28,562 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_wakeup [2021-11-25 20:21:28,562 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_wakeup [2021-11-25 20:21:28,563 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-25 20:21:28,563 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-25 20:21:28,563 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_s_ctrl [2021-11-25 20:21:28,563 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_s_ctrl [2021-11-25 20:21:28,563 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_iolock [2021-11-25 20:21:28,563 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_iolock [2021-11-25 20:21:28,563 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_enum_input [2021-11-25 20:21:28,564 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_enum_input [2021-11-25 20:21:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_sram_channel_dump [2021-11-25 20:21:28,564 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_sram_channel_dump [2021-11-25 20:21:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure video_set_drvdata [2021-11-25 20:21:28,564 INFO L138 BoogieDeclarations]: Found implementation of procedure video_set_drvdata [2021-11-25 20:21:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_tuner [2021-11-25 20:21:28,564 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_tuner [2021-11-25 20:21:28,565 INFO L130 BoogieDeclarations]: Found specification of procedure res_check [2021-11-25 20:21:28,565 INFO L138 BoogieDeclarations]: Found implementation of procedure res_check [2021-11-25 20:21:28,565 INFO L130 BoogieDeclarations]: Found specification of procedure format_by_fourcc [2021-11-25 20:21:28,565 INFO L138 BoogieDeclarations]: Found implementation of procedure format_by_fourcc [2021-11-25 20:21:28,565 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_risc_buffer [2021-11-25 20:21:28,565 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_risc_buffer [2021-11-25 20:21:28,565 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-25 20:21:28,566 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-25 20:21:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 20:21:28,567 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 20:21:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2021-11-25 20:21:28,567 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_event_unsubscribe [2021-11-25 20:21:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:21:28,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:21:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_risc_stopper [2021-11-25 20:21:28,568 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_risc_stopper [2021-11-25 20:21:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 20:21:28,568 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 20:21:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-25 20:21:28,569 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-25 20:21:28,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 20:21:28,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 20:21:28,569 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_std [2021-11-25 20:21:28,569 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_std [2021-11-25 20:21:28,569 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamoff [2021-11-25 20:21:28,569 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamoff [2021-11-25 20:21:28,570 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_sram_channel_setup [2021-11-25 20:21:28,570 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_sram_channel_setup [2021-11-25 20:21:28,570 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_free_buffer [2021-11-25 20:21:28,570 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_free_buffer [2021-11-25 20:21:28,570 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2021-11-25 20:21:28,570 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2021-11-25 20:21:28,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 20:21:28,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 20:21:28,571 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_enum_input [2021-11-25 20:21:28,571 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_enum_input [2021-11-25 20:21:28,571 INFO L130 BoogieDeclarations]: Found specification of procedure res_get [2021-11-25 20:21:28,571 INFO L138 BoogieDeclarations]: Found implementation of procedure res_get [2021-11-25 20:21:28,571 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_mmap_free [2021-11-25 20:21:28,571 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_mmap_free [2021-11-25 20:21:28,571 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_resume [2021-11-25 20:21:28,572 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_resume [2021-11-25 20:21:28,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_cx8800_pci_driver_exit_15_2 [2021-11-25 20:21:28,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_cx8800_pci_driver_exit_15_2 [2021-11-25 20:21:28,572 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_frequency [2021-11-25 20:21:28,572 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_frequency [2021-11-25 20:21:28,572 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-11-25 20:21:28,572 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-11-25 20:21:28,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-25 20:21:28,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-25 20:21:28,573 INFO L130 BoogieDeclarations]: Found specification of procedure video_poll [2021-11-25 20:21:28,573 INFO L138 BoogieDeclarations]: Found implementation of procedure video_poll [2021-11-25 20:21:28,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:21:28,573 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 20:21:28,573 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 20:21:28,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:21:28,574 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_core_put [2021-11-25 20:21:28,574 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_core_put [2021-11-25 20:21:28,574 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_find [2021-11-25 20:21:28,574 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_find [2021-11-25 20:21:28,574 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_release [2021-11-25 20:21:28,575 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_release [2021-11-25 20:21:28,579 INFO L130 BoogieDeclarations]: Found specification of procedure start_video_dma [2021-11-25 20:21:28,579 INFO L138 BoogieDeclarations]: Found implementation of procedure start_video_dma [2021-11-25 20:21:28,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:21:28,579 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_node_name [2021-11-25 20:21:28,580 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_node_name [2021-11-25 20:21:28,580 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 20:21:28,580 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 20:21:28,580 INFO L130 BoogieDeclarations]: Found specification of procedure get_queue [2021-11-25 20:21:28,580 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queue [2021-11-25 20:21:28,582 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-25 20:21:28,582 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-25 20:21:28,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 20:21:28,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 20:21:28,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 20:21:28,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 20:21:28,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 20:21:28,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 20:21:28,583 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_dqbuf [2021-11-25 20:21:28,583 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_dqbuf [2021-11-25 20:21:28,583 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-25 20:21:28,583 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-25 20:21:28,583 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querycap [2021-11-25 20:21:28,583 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querycap [2021-11-25 20:21:28,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 20:21:28,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 20:21:28,584 INFO L130 BoogieDeclarations]: Found specification of procedure video_register_device [2021-11-25 20:21:28,584 INFO L138 BoogieDeclarations]: Found implementation of procedure video_register_device [2021-11-25 20:21:28,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_cx88_core [2021-11-25 20:21:28,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_cx88_core [2021-11-25 20:21:28,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_cx88_core [2021-11-25 20:21:28,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_cx88_core [2021-11-25 20:21:28,585 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 20:21:28,585 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 20:21:28,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 20:21:28,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 20:21:28,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:21:28,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 20:21:28,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 20:21:28,586 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_input [2021-11-25 20:21:28,586 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_input [2021-11-25 20:21:28,586 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 20:21:28,586 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 20:21:28,586 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_tuner [2021-11-25 20:21:28,586 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_tuner [2021-11-25 20:21:28,586 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-25 20:21:28,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-25 20:21:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_start_vbi_dma [2021-11-25 20:21:28,587 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_start_vbi_dma [2021-11-25 20:21:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_ir_stop [2021-11-25 20:21:28,587 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_ir_stop [2021-11-25 20:21:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_register [2021-11-25 20:21:28,587 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_register [2021-11-25 20:21:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 20:21:28,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 20:21:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 20:21:28,588 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 20:21:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 20:21:28,588 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 20:21:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxw [2021-11-25 20:21:28,588 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxw [2021-11-25 20:21:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-25 20:21:28,589 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-25 20:21:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxh [2021-11-25 20:21:28,589 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxh [2021-11-25 20:21:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 20:21:28,589 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 20:21:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure get_resource [2021-11-25 20:21:28,589 INFO L138 BoogieDeclarations]: Found implementation of procedure get_resource [2021-11-25 20:21:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 20:21:28,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 20:21:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 20:21:28,590 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 20:21:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_initdev [2021-11-25 20:21:28,590 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_initdev [2021-11-25 20:21:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:21:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 20:21:28,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 20:21:29,942 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:21:29,947 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:21:30,267 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 20:21:57,821 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 20:21:57,940 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:21:59,491 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:21:59,492 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 20:21:59,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:21:59 BoogieIcfgContainer [2021-11-25 20:21:59,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:21:59,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:21:59,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:21:59,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:21:59,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:21:21" (1/3) ... [2021-11-25 20:21:59,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a4bfc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:21:59, skipping insertion in model container [2021-11-25 20:21:59,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:27" (2/3) ... [2021-11-25 20:21:59,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a4bfc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:21:59, skipping insertion in model container [2021-11-25 20:21:59,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:21:59" (3/3) ... [2021-11-25 20:21:59,505 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i [2021-11-25 20:21:59,510 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:21:59,510 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 20:21:59,567 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:21:59,574 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 20:21:59,574 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 20:21:59,649 INFO L276 IsEmpty]: Start isEmpty. Operand has 2246 states, 1337 states have (on average 1.2976813762154076) internal successors, (1735), 1352 states have internal predecessors, (1735), 759 states have call successors, (759), 148 states have call predecessors, (759), 147 states have return successors, (752), 751 states have call predecessors, (752), 752 states have call successors, (752) [2021-11-25 20:21:59,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2021-11-25 20:21:59,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:59,694 INFO L514 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 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] [2021-11-25 20:21:59,695 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:21:59,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:59,704 INFO L85 PathProgramCache]: Analyzing trace with hash -626521983, now seen corresponding path program 1 times [2021-11-25 20:21:59,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:59,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202855002] [2021-11-25 20:21:59,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:59,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:01,135 INFO L134 CoverageAnalysis]: Checked inductivity of 9509 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9509 trivial. 0 not checked. [2021-11-25 20:22:01,136 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:01,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202855002] [2021-11-25 20:22:01,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202855002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:01,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:01,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:22:01,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749131036] [2021-11-25 20:22:01,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:01,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:22:01,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:01,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:22:01,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:22:01,178 INFO L87 Difference]: Start difference. First operand has 2246 states, 1337 states have (on average 1.2976813762154076) internal successors, (1735), 1352 states have internal predecessors, (1735), 759 states have call successors, (759), 148 states have call predecessors, (759), 147 states have return successors, (752), 751 states have call predecessors, (752), 752 states have call successors, (752) Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-25 20:22:06,343 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:22:07,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:07,104 INFO L93 Difference]: Finished difference Result 6461 states and 9491 transitions. [2021-11-25 20:22:07,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:22:07,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 514 [2021-11-25 20:22:07,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:07,173 INFO L225 Difference]: With dead ends: 6461 [2021-11-25 20:22:07,173 INFO L226 Difference]: Without dead ends: 4303 [2021-11-25 20:22:07,197 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 20:22:07,201 INFO L933 BasicCegarLoop]: 3443 mSDtfsCounter, 3004 mSDsluCounter, 3177 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3004 SdHoareTripleChecker+Valid, 6169 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:07,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3004 Valid, 6169 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 959 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2021-11-25 20:22:07,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4303 states. [2021-11-25 20:22:07,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4303 to 4299. [2021-11-25 20:22:07,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4299 states, 2581 states have (on average 1.2932971716388997) internal successors, (3338), 2610 states have internal predecessors, (3338), 1425 states have call successors, (1425), 291 states have call predecessors, (1425), 290 states have return successors, (1421), 1419 states have call predecessors, (1421), 1421 states have call successors, (1421) [2021-11-25 20:22:07,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4299 states to 4299 states and 6184 transitions. [2021-11-25 20:22:07,661 INFO L78 Accepts]: Start accepts. Automaton has 4299 states and 6184 transitions. Word has length 514 [2021-11-25 20:22:07,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:07,667 INFO L470 AbstractCegarLoop]: Abstraction has 4299 states and 6184 transitions. [2021-11-25 20:22:07,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-25 20:22:07,669 INFO L276 IsEmpty]: Start isEmpty. Operand 4299 states and 6184 transitions. [2021-11-25 20:22:07,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2021-11-25 20:22:07,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:07,691 INFO L514 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:07,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:22:07,692 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:22:07,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:07,696 INFO L85 PathProgramCache]: Analyzing trace with hash -135381459, now seen corresponding path program 1 times [2021-11-25 20:22:07,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:07,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163007301] [2021-11-25 20:22:07,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:07,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2021-11-25 20:22:08,454 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:08,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163007301] [2021-11-25 20:22:08,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163007301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:08,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:08,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:22:08,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723133224] [2021-11-25 20:22:08,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:08,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:22:08,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:08,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:22:08,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:22:08,463 INFO L87 Difference]: Start difference. First operand 4299 states and 6184 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-25 20:22:13,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:13,280 INFO L93 Difference]: Finished difference Result 10298 states and 14736 transitions. [2021-11-25 20:22:13,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:22:13,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 526 [2021-11-25 20:22:13,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:13,335 INFO L225 Difference]: With dead ends: 10298 [2021-11-25 20:22:13,336 INFO L226 Difference]: Without dead ends: 6098 [2021-11-25 20:22:13,364 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 20:22:13,367 INFO L933 BasicCegarLoop]: 3371 mSDtfsCounter, 2762 mSDsluCounter, 3090 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2762 SdHoareTripleChecker+Valid, 6063 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:13,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2762 Valid, 6063 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-25 20:22:13,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6098 states. [2021-11-25 20:22:13,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6098 to 6077. [2021-11-25 20:22:13,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6077 states, 3672 states have (on average 1.2889433551198257) internal successors, (4733), 3718 states have internal predecessors, (4733), 1964 states have call successors, (1964), 439 states have call predecessors, (1964), 438 states have return successors, (1960), 1952 states have call predecessors, (1960), 1960 states have call successors, (1960) [2021-11-25 20:22:13,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6077 states to 6077 states and 8657 transitions. [2021-11-25 20:22:13,755 INFO L78 Accepts]: Start accepts. Automaton has 6077 states and 8657 transitions. Word has length 526 [2021-11-25 20:22:13,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:13,759 INFO L470 AbstractCegarLoop]: Abstraction has 6077 states and 8657 transitions. [2021-11-25 20:22:13,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-25 20:22:13,760 INFO L276 IsEmpty]: Start isEmpty. Operand 6077 states and 8657 transitions. [2021-11-25 20:22:13,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2021-11-25 20:22:13,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:13,778 INFO L514 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:13,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:22:13,778 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:22:13,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:13,779 INFO L85 PathProgramCache]: Analyzing trace with hash 929342936, now seen corresponding path program 1 times [2021-11-25 20:22:13,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:13,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146788003] [2021-11-25 20:22:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:13,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:14,548 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2021-11-25 20:22:14,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:14,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146788003] [2021-11-25 20:22:14,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146788003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:14,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:14,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:22:14,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207130236] [2021-11-25 20:22:14,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:14,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:22:14,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:14,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:22:14,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:22:14,551 INFO L87 Difference]: Start difference. First operand 6077 states and 8657 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-25 20:22:20,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:22:21,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:21,567 INFO L93 Difference]: Finished difference Result 14861 states and 21122 transitions. [2021-11-25 20:22:21,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:22:21,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 525 [2021-11-25 20:22:21,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:21,645 INFO L225 Difference]: With dead ends: 14861 [2021-11-25 20:22:21,646 INFO L226 Difference]: Without dead ends: 8883 [2021-11-25 20:22:21,678 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 20:22:21,679 INFO L933 BasicCegarLoop]: 3793 mSDtfsCounter, 2758 mSDsluCounter, 3090 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2758 SdHoareTripleChecker+Valid, 6483 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:21,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2758 Valid, 6483 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1108 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2021-11-25 20:22:21,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8883 states. [2021-11-25 20:22:22,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8883 to 8862. [2021-11-25 20:22:22,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8862 states, 5339 states have (on average 1.2781419741524631) internal successors, (6824), 5419 states have internal predecessors, (6824), 2870 states have call successors, (2870), 651 states have call predecessors, (2870), 650 states have return successors, (2866), 2846 states have call predecessors, (2866), 2866 states have call successors, (2866) [2021-11-25 20:22:22,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8862 states to 8862 states and 12560 transitions. [2021-11-25 20:22:22,203 INFO L78 Accepts]: Start accepts. Automaton has 8862 states and 12560 transitions. Word has length 525 [2021-11-25 20:22:22,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:22,204 INFO L470 AbstractCegarLoop]: Abstraction has 8862 states and 12560 transitions. [2021-11-25 20:22:22,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-25 20:22:22,205 INFO L276 IsEmpty]: Start isEmpty. Operand 8862 states and 12560 transitions. [2021-11-25 20:22:22,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2021-11-25 20:22:22,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:22,221 INFO L514 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:22,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:22:22,221 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:22:22,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:22,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1094172796, now seen corresponding path program 1 times [2021-11-25 20:22:22,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:22,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407545514] [2021-11-25 20:22:22,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:22,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2021-11-25 20:22:22,844 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:22,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407545514] [2021-11-25 20:22:22,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407545514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:22,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:22,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:22:22,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857580653] [2021-11-25 20:22:22,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:22,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:22:22,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:22,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:22:22,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:22:22,848 INFO L87 Difference]: Start difference. First operand 8862 states and 12560 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-25 20:22:27,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:27,439 INFO L93 Difference]: Finished difference Result 23160 states and 32885 transitions. [2021-11-25 20:22:27,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:22:27,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 531 [2021-11-25 20:22:27,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:27,559 INFO L225 Difference]: With dead ends: 23160 [2021-11-25 20:22:27,560 INFO L226 Difference]: Without dead ends: 14397 [2021-11-25 20:22:27,607 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 20:22:27,608 INFO L933 BasicCegarLoop]: 3893 mSDtfsCounter, 2816 mSDsluCounter, 3161 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2816 SdHoareTripleChecker+Valid, 6603 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:27,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2816 Valid, 6603 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-25 20:22:27,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14397 states. [2021-11-25 20:22:28,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14397 to 14372. [2021-11-25 20:22:28,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14372 states, 8737 states have (on average 1.2854526725420625) internal successors, (11231), 8867 states have internal predecessors, (11231), 4572 states have call successors, (4572), 1065 states have call predecessors, (4572), 1060 states have return successors, (4568), 4520 states have call predecessors, (4568), 4568 states have call successors, (4568) [2021-11-25 20:22:28,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14372 states to 14372 states and 20371 transitions. [2021-11-25 20:22:28,583 INFO L78 Accepts]: Start accepts. Automaton has 14372 states and 20371 transitions. Word has length 531 [2021-11-25 20:22:28,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:28,584 INFO L470 AbstractCegarLoop]: Abstraction has 14372 states and 20371 transitions. [2021-11-25 20:22:28,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-25 20:22:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 14372 states and 20371 transitions. [2021-11-25 20:22:28,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2021-11-25 20:22:28,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:28,604 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:28,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:22:28,605 INFO L402 AbstractCegarLoop]: === Iteration 5 === 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:22:28,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:28,607 INFO L85 PathProgramCache]: Analyzing trace with hash 2075878219, now seen corresponding path program 1 times [2021-11-25 20:22:28,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:28,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203493247] [2021-11-25 20:22:28,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:28,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 9847 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9847 trivial. 0 not checked. [2021-11-25 20:22:29,828 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:29,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203493247] [2021-11-25 20:22:29,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203493247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:29,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:29,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:22:29,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873611745] [2021-11-25 20:22:29,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:29,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:22:29,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:29,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:22:29,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:22:29,832 INFO L87 Difference]: Start difference. First operand 14372 states and 20371 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-25 20:22:36,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:36,069 INFO L93 Difference]: Finished difference Result 14378 states and 20376 transitions. [2021-11-25 20:22:36,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:22:36,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 561 [2021-11-25 20:22:36,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:36,148 INFO L225 Difference]: With dead ends: 14378 [2021-11-25 20:22:36,148 INFO L226 Difference]: Without dead ends: 14376 [2021-11-25 20:22:36,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:22:36,159 INFO L933 BasicCegarLoop]: 2745 mSDtfsCounter, 3087 mSDsluCounter, 6413 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3092 SdHoareTripleChecker+Valid, 8228 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:36,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3092 Valid, 8228 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-25 20:22:36,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14376 states. [2021-11-25 20:22:36,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14376 to 14376. [2021-11-25 20:22:36,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14376 states, 8740 states have (on average 1.285354691075515) internal successors, (11234), 8870 states have internal predecessors, (11234), 4572 states have call successors, (4572), 1066 states have call predecessors, (4572), 1061 states have return successors, (4568), 4520 states have call predecessors, (4568), 4568 states have call successors, (4568) [2021-11-25 20:22:37,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14376 states to 14376 states and 20374 transitions. [2021-11-25 20:22:37,060 INFO L78 Accepts]: Start accepts. Automaton has 14376 states and 20374 transitions. Word has length 561 [2021-11-25 20:22:37,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:37,061 INFO L470 AbstractCegarLoop]: Abstraction has 14376 states and 20374 transitions. [2021-11-25 20:22:37,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-25 20:22:37,062 INFO L276 IsEmpty]: Start isEmpty. Operand 14376 states and 20374 transitions. [2021-11-25 20:22:37,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2021-11-25 20:22:37,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:37,074 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:37,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:22:37,075 INFO L402 AbstractCegarLoop]: === Iteration 6 === 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:22:37,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:37,075 INFO L85 PathProgramCache]: Analyzing trace with hash 846444446, now seen corresponding path program 1 times [2021-11-25 20:22:37,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:37,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254296452] [2021-11-25 20:22:37,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:37,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:38,005 INFO L134 CoverageAnalysis]: Checked inductivity of 9848 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9846 trivial. 0 not checked. [2021-11-25 20:22:38,005 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:38,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254296452] [2021-11-25 20:22:38,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254296452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:38,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:38,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:22:38,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704480058] [2021-11-25 20:22:38,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:38,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:22:38,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:38,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:22:38,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:22:38,009 INFO L87 Difference]: Start difference. First operand 14376 states and 20374 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-25 20:22:43,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:43,702 INFO L93 Difference]: Finished difference Result 14382 states and 20379 transitions. [2021-11-25 20:22:43,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:22:43,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 565 [2021-11-25 20:22:43,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:43,788 INFO L225 Difference]: With dead ends: 14382 [2021-11-25 20:22:43,788 INFO L226 Difference]: Without dead ends: 14380 [2021-11-25 20:22:43,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:22:43,802 INFO L933 BasicCegarLoop]: 2748 mSDtfsCounter, 3082 mSDsluCounter, 6413 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3086 SdHoareTripleChecker+Valid, 8231 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:43,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3086 Valid, 8231 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-25 20:22:43,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14380 states. [2021-11-25 20:22:44,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14380 to 14380. [2021-11-25 20:22:44,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14380 states, 8743 states have (on average 1.2852567768500516) internal successors, (11237), 8873 states have internal predecessors, (11237), 4572 states have call successors, (4572), 1067 states have call predecessors, (4572), 1062 states have return successors, (4568), 4520 states have call predecessors, (4568), 4568 states have call successors, (4568) [2021-11-25 20:22:44,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14380 states to 14380 states and 20377 transitions. [2021-11-25 20:22:44,576 INFO L78 Accepts]: Start accepts. Automaton has 14380 states and 20377 transitions. Word has length 565 [2021-11-25 20:22:44,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:44,577 INFO L470 AbstractCegarLoop]: Abstraction has 14380 states and 20377 transitions. [2021-11-25 20:22:44,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-25 20:22:44,578 INFO L276 IsEmpty]: Start isEmpty. Operand 14380 states and 20377 transitions. [2021-11-25 20:22:44,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2021-11-25 20:22:44,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:44,590 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:44,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:22:44,590 INFO L402 AbstractCegarLoop]: === Iteration 7 === 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:22:44,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:44,591 INFO L85 PathProgramCache]: Analyzing trace with hash 840860939, now seen corresponding path program 1 times [2021-11-25 20:22:44,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:44,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738263143] [2021-11-25 20:22:44,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:44,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:45,689 INFO L134 CoverageAnalysis]: Checked inductivity of 9855 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9851 trivial. 0 not checked. [2021-11-25 20:22:45,689 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:45,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738263143] [2021-11-25 20:22:45,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738263143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:45,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:45,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:22:45,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992227547] [2021-11-25 20:22:45,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:45,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:22:45,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:45,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:22:45,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:22:45,693 INFO L87 Difference]: Start difference. First operand 14380 states and 20377 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-25 20:22:51,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:51,194 INFO L93 Difference]: Finished difference Result 18950 states and 26454 transitions. [2021-11-25 20:22:51,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:22:51,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 571 [2021-11-25 20:22:51,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:51,308 INFO L225 Difference]: With dead ends: 18950 [2021-11-25 20:22:51,309 INFO L226 Difference]: Without dead ends: 18948 [2021-11-25 20:22:51,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:22:51,324 INFO L933 BasicCegarLoop]: 3072 mSDtfsCounter, 2758 mSDsluCounter, 8365 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2761 SdHoareTripleChecker+Valid, 10323 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:51,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2761 Valid, 10323 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-25 20:22:51,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18948 states. [2021-11-25 20:22:52,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18948 to 18905. [2021-11-25 20:22:52,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18905 states, 11440 states have (on average 1.272902097902098) internal successors, (14562), 11634 states have internal predecessors, (14562), 5898 states have call successors, (5898), 1595 states have call predecessors, (5898), 1564 states have return successors, (5944), 5756 states have call predecessors, (5944), 5894 states have call successors, (5944) [2021-11-25 20:22:52,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18905 states to 18905 states and 26404 transitions. [2021-11-25 20:22:52,580 INFO L78 Accepts]: Start accepts. Automaton has 18905 states and 26404 transitions. Word has length 571 [2021-11-25 20:22:52,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:52,581 INFO L470 AbstractCegarLoop]: Abstraction has 18905 states and 26404 transitions. [2021-11-25 20:22:52,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-25 20:22:52,581 INFO L276 IsEmpty]: Start isEmpty. Operand 18905 states and 26404 transitions. [2021-11-25 20:22:52,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2021-11-25 20:22:52,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:52,595 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:52,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:22:52,596 INFO L402 AbstractCegarLoop]: === Iteration 8 === 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:22:52,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:52,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1155311006, now seen corresponding path program 1 times [2021-11-25 20:22:52,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:52,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226640686] [2021-11-25 20:22:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:52,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 9864 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9858 trivial. 0 not checked. [2021-11-25 20:22:53,441 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:53,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226640686] [2021-11-25 20:22:53,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226640686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:53,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:53,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:22:53,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25804732] [2021-11-25 20:22:53,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:53,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:22:53,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:53,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:22:53,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:22:53,445 INFO L87 Difference]: Start difference. First operand 18905 states and 26404 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2021-11-25 20:22:57,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:57,826 INFO L93 Difference]: Finished difference Result 18911 states and 26409 transitions. [2021-11-25 20:22:57,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:22:57,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) Word has length 575 [2021-11-25 20:22:57,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:57,914 INFO L225 Difference]: With dead ends: 18911 [2021-11-25 20:22:57,915 INFO L226 Difference]: Without dead ends: 18909 [2021-11-25 20:22:57,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:22:57,924 INFO L933 BasicCegarLoop]: 2748 mSDtfsCounter, 3082 mSDsluCounter, 6413 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3084 SdHoareTripleChecker+Valid, 8231 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:57,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3084 Valid, 8231 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-25 20:22:57,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18909 states. [2021-11-25 20:22:58,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18909 to 18909. [2021-11-25 20:22:58,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18909 states, 11443 states have (on average 1.2728305514288212) internal successors, (14565), 11637 states have internal predecessors, (14565), 5898 states have call successors, (5898), 1596 states have call predecessors, (5898), 1565 states have return successors, (5944), 5756 states have call predecessors, (5944), 5894 states have call successors, (5944) [2021-11-25 20:22:58,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18909 states to 18909 states and 26407 transitions. [2021-11-25 20:22:58,872 INFO L78 Accepts]: Start accepts. Automaton has 18909 states and 26407 transitions. Word has length 575 [2021-11-25 20:22:58,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:58,873 INFO L470 AbstractCegarLoop]: Abstraction has 18909 states and 26407 transitions. [2021-11-25 20:22:58,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2021-11-25 20:22:58,873 INFO L276 IsEmpty]: Start isEmpty. Operand 18909 states and 26407 transitions. [2021-11-25 20:22:58,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2021-11-25 20:22:58,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:58,889 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:22:58,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:22:58,889 INFO L402 AbstractCegarLoop]: === Iteration 9 === 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:22:58,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:58,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1034016808, now seen corresponding path program 1 times [2021-11-25 20:22:58,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:58,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938620106] [2021-11-25 20:22:58,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:58,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:59,870 INFO L134 CoverageAnalysis]: Checked inductivity of 9878 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9870 trivial. 0 not checked. [2021-11-25 20:22:59,871 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:59,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938620106] [2021-11-25 20:22:59,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938620106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:59,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:59,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:22:59,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421008410] [2021-11-25 20:22:59,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:59,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:22:59,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:59,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:22:59,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:22:59,875 INFO L87 Difference]: Start difference. First operand 18909 states and 26407 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-25 20:23:04,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:23:04,699 INFO L93 Difference]: Finished difference Result 18915 states and 26412 transitions. [2021-11-25 20:23:04,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:23:04,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 580 [2021-11-25 20:23:04,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:23:04,785 INFO L225 Difference]: With dead ends: 18915 [2021-11-25 20:23:04,785 INFO L226 Difference]: Without dead ends: 18911 [2021-11-25 20:23:04,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:23:04,795 INFO L933 BasicCegarLoop]: 2748 mSDtfsCounter, 3082 mSDsluCounter, 6413 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3083 SdHoareTripleChecker+Valid, 8231 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:23:04,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3083 Valid, 8231 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-25 20:23:04,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18911 states. [2021-11-25 20:23:05,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18911 to 18911. [2021-11-25 20:23:05,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18911 states, 11445 states have (on average 1.272695500218436) internal successors, (14566), 11638 states have internal predecessors, (14566), 5898 states have call successors, (5898), 1597 states have call predecessors, (5898), 1565 states have return successors, (5944), 5756 states have call predecessors, (5944), 5894 states have call successors, (5944) [2021-11-25 20:23:05,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18911 states to 18911 states and 26408 transitions. [2021-11-25 20:23:05,643 INFO L78 Accepts]: Start accepts. Automaton has 18911 states and 26408 transitions. Word has length 580 [2021-11-25 20:23:05,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:23:05,644 INFO L470 AbstractCegarLoop]: Abstraction has 18911 states and 26408 transitions. [2021-11-25 20:23:05,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-25 20:23:05,645 INFO L276 IsEmpty]: Start isEmpty. Operand 18911 states and 26408 transitions. [2021-11-25 20:23:05,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2021-11-25 20:23:05,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:23:05,666 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:05,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:23:05,666 INFO L402 AbstractCegarLoop]: === Iteration 10 === 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:23:05,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:23:05,667 INFO L85 PathProgramCache]: Analyzing trace with hash -197377891, now seen corresponding path program 1 times [2021-11-25 20:23:05,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:23:05,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462752614] [2021-11-25 20:23:05,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:05,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:23:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:06,217 INFO L134 CoverageAnalysis]: Checked inductivity of 9833 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9830 trivial. 0 not checked. [2021-11-25 20:23:06,217 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:23:06,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462752614] [2021-11-25 20:23:06,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462752614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:23:06,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:23:06,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:23:06,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049437602] [2021-11-25 20:23:06,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:23:06,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:23:06,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:23:06,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:23:06,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:23:06,220 INFO L87 Difference]: Start difference. First operand 18911 states and 26408 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, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2021-11-25 20:23:09,197 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:23:13,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:23:13,311 INFO L93 Difference]: Finished difference Result 45316 states and 63314 transitions. [2021-11-25 20:23:13,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:23:13,312 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, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 582 [2021-11-25 20:23:13,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:23:13,659 INFO L225 Difference]: With dead ends: 45316 [2021-11-25 20:23:13,659 INFO L226 Difference]: Without dead ends: 27133 [2021-11-25 20:23:13,715 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 20:23:13,715 INFO L933 BasicCegarLoop]: 4039 mSDtfsCounter, 2805 mSDsluCounter, 3158 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2805 SdHoareTripleChecker+Valid, 6747 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:23:13,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2805 Valid, 6747 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1115 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-25 20:23:13,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27133 states. [2021-11-25 20:23:15,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27133 to 27086. [2021-11-25 20:23:15,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27086 states, 16422 states have (on average 1.2746315917671416) internal successors, (20932), 16706 states have internal predecessors, (20932), 8413 states have call successors, (8413), 2296 states have call predecessors, (8413), 2248 states have return successors, (8483), 8196 states have call predecessors, (8483), 8409 states have call successors, (8483) [2021-11-25 20:23:15,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27086 states to 27086 states and 37828 transitions. [2021-11-25 20:23:15,147 INFO L78 Accepts]: Start accepts. Automaton has 27086 states and 37828 transitions. Word has length 582 [2021-11-25 20:23:15,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:23:15,148 INFO L470 AbstractCegarLoop]: Abstraction has 27086 states and 37828 transitions. [2021-11-25 20:23:15,149 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, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2021-11-25 20:23:15,149 INFO L276 IsEmpty]: Start isEmpty. Operand 27086 states and 37828 transitions. [2021-11-25 20:23:15,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2021-11-25 20:23:15,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:23:15,167 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:15,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:23:15,168 INFO L402 AbstractCegarLoop]: === Iteration 11 === 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:23:15,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:23:15,169 INFO L85 PathProgramCache]: Analyzing trace with hash -58484651, now seen corresponding path program 1 times [2021-11-25 20:23:15,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:23:15,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663206239] [2021-11-25 20:23:15,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:15,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:23:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:16,111 INFO L134 CoverageAnalysis]: Checked inductivity of 9893 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9883 trivial. 0 not checked. [2021-11-25 20:23:16,111 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:23:16,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663206239] [2021-11-25 20:23:16,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663206239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:23:16,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:23:16,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:23:16,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432862304] [2021-11-25 20:23:16,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:23:16,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:23:16,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:23:16,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:23:16,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:23:16,115 INFO L87 Difference]: Start difference. First operand 27086 states and 37828 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2021-11-25 20:23:22,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:23:22,776 INFO L93 Difference]: Finished difference Result 27700 states and 38423 transitions. [2021-11-25 20:23:22,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:23:22,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) Word has length 586 [2021-11-25 20:23:22,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:23:22,887 INFO L225 Difference]: With dead ends: 27700 [2021-11-25 20:23:22,887 INFO L226 Difference]: Without dead ends: 27575 [2021-11-25 20:23:22,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:23:22,900 INFO L933 BasicCegarLoop]: 2755 mSDtfsCounter, 3053 mSDsluCounter, 6494 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3053 SdHoareTripleChecker+Valid, 8307 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:23:22,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3053 Valid, 8307 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-11-25 20:23:22,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27575 states. [2021-11-25 20:23:24,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27575 to 27474. [2021-11-25 20:23:24,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27474 states, 16667 states have (on average 1.2700545989080219) internal successors, (21168), 16915 states have internal predecessors, (21168), 8413 states have call successors, (8413), 2421 states have call predecessors, (8413), 2392 states have return successors, (8487), 8250 states have call predecessors, (8487), 8413 states have call successors, (8487) [2021-11-25 20:23:24,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27474 states to 27474 states and 38068 transitions. [2021-11-25 20:23:24,492 INFO L78 Accepts]: Start accepts. Automaton has 27474 states and 38068 transitions. Word has length 586 [2021-11-25 20:23:24,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:23:24,494 INFO L470 AbstractCegarLoop]: Abstraction has 27474 states and 38068 transitions. [2021-11-25 20:23:24,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2021-11-25 20:23:24,495 INFO L276 IsEmpty]: Start isEmpty. Operand 27474 states and 38068 transitions. [2021-11-25 20:23:24,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2021-11-25 20:23:24,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:23:24,524 INFO L514 BasicCegarLoop]: trace histogram [54, 49, 49, 49, 49, 49, 49, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:23:24,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 20:23:24,525 INFO L402 AbstractCegarLoop]: === Iteration 12 === 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:23:24,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:23:24,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2051912325, now seen corresponding path program 1 times [2021-11-25 20:23:24,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:23:24,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77834562] [2021-11-25 20:23:24,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:24,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:23:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 9954 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 9943 trivial. 0 not checked. [2021-11-25 20:23:25,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:23:25,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77834562] [2021-11-25 20:23:25,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77834562] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:23:25,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147270269] [2021-11-25 20:23:25,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:25,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:23:25,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:23:25,510 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:23:25,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:23:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:27,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 8862 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:23:27,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:23:28,857 INFO L134 CoverageAnalysis]: Checked inductivity of 9954 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 9841 trivial. 0 not checked. [2021-11-25 20:23:28,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:23:28,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147270269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:23:28,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:23:28,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 20:23:28,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416048222] [2021-11-25 20:23:28,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:23:28,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:23:28,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:23:28,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:23:28,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:23:28,861 INFO L87 Difference]: Start difference. First operand 27474 states and 38068 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (65), 3 states have call predecessors, (65), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2021-11-25 20:23:34,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:23:34,992 INFO L93 Difference]: Finished difference Result 65695 states and 91032 transitions. [2021-11-25 20:23:34,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:23:34,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (65), 3 states have call predecessors, (65), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 591 [2021-11-25 20:23:34,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:23:35,172 INFO L225 Difference]: With dead ends: 65695 [2021-11-25 20:23:35,172 INFO L226 Difference]: Without dead ends: 38949 [2021-11-25 20:23:35,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 592 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:23:35,277 INFO L933 BasicCegarLoop]: 3383 mSDtfsCounter, 2912 mSDsluCounter, 2927 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2912 SdHoareTripleChecker+Valid, 5917 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:23:35,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2912 Valid, 5917 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-25 20:23:35,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38949 states. [2021-11-25 20:23:37,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38949 to 38891. [2021-11-25 20:23:37,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38891 states, 23657 states have (on average 1.273491989685928) internal successors, (30127), 24009 states have internal predecessors, (30127), 11822 states have call successors, (11822), 3450 states have call predecessors, (11822), 3410 states have return successors, (11922), 11596 states have call predecessors, (11922), 11822 states have call successors, (11922) [2021-11-25 20:23:37,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38891 states to 38891 states and 53871 transitions. [2021-11-25 20:23:37,596 INFO L78 Accepts]: Start accepts. Automaton has 38891 states and 53871 transitions. Word has length 591 [2021-11-25 20:23:37,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:23:37,596 INFO L470 AbstractCegarLoop]: Abstraction has 38891 states and 53871 transitions. [2021-11-25 20:23:37,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (65), 3 states have call predecessors, (65), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2021-11-25 20:23:37,597 INFO L276 IsEmpty]: Start isEmpty. Operand 38891 states and 53871 transitions. [2021-11-25 20:23:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2021-11-25 20:23:37,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:23:37,616 INFO L514 BasicCegarLoop]: trace histogram [54, 49, 49, 49, 49, 49, 49, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:23:37,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-25 20:23:37,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:23:37,833 INFO L402 AbstractCegarLoop]: === Iteration 13 === 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:23:37,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:23:37,834 INFO L85 PathProgramCache]: Analyzing trace with hash -933595958, now seen corresponding path program 1 times [2021-11-25 20:23:37,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:23:37,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559114781] [2021-11-25 20:23:37,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:37,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:23:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 9954 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 9943 trivial. 0 not checked. [2021-11-25 20:23:38,644 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:23:38,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559114781] [2021-11-25 20:23:38,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559114781] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:23:38,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911600122] [2021-11-25 20:23:38,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:38,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:23:38,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:23:38,648 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:23:38,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:23:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:40,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 8861 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:23:40,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:23:41,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9954 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 9841 trivial. 0 not checked. [2021-11-25 20:23:41,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:23:41,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911600122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:23:41,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:23:41,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 20:23:41,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031339658] [2021-11-25 20:23:41,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:23:41,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:23:42,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:23:42,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:23:42,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:23:42,000 INFO L87 Difference]: Start difference. First operand 38891 states and 53871 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (65), 3 states have call predecessors, (65), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2021-11-25 20:23:48,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:23:48,657 INFO L93 Difference]: Finished difference Result 95893 states and 132684 transitions. [2021-11-25 20:23:48,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:23:48,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (65), 3 states have call predecessors, (65), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 590 [2021-11-25 20:23:48,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:23:48,901 INFO L225 Difference]: With dead ends: 95893 [2021-11-25 20:23:48,901 INFO L226 Difference]: Without dead ends: 57730 [2021-11-25 20:23:49,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:23:49,011 INFO L933 BasicCegarLoop]: 3610 mSDtfsCounter, 2910 mSDsluCounter, 2925 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2910 SdHoareTripleChecker+Valid, 6140 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:23:49,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2910 Valid, 6140 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-25 20:23:49,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57730 states. [2021-11-25 20:23:51,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57730 to 57720. [2021-11-25 20:23:51,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57720 states, 35252 states have (on average 1.2759276069442869) internal successors, (44979), 35777 states have internal predecessors, (44979), 17308 states have call successors, (17308), 5217 states have call predecessors, (17308), 5158 states have return successors, (17472), 16965 states have call predecessors, (17472), 17308 states have call successors, (17472) [2021-11-25 20:23:52,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57720 states to 57720 states and 79759 transitions. [2021-11-25 20:23:52,227 INFO L78 Accepts]: Start accepts. Automaton has 57720 states and 79759 transitions. Word has length 590 [2021-11-25 20:23:52,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:23:52,228 INFO L470 AbstractCegarLoop]: Abstraction has 57720 states and 79759 transitions. [2021-11-25 20:23:52,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (65), 3 states have call predecessors, (65), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2021-11-25 20:23:52,228 INFO L276 IsEmpty]: Start isEmpty. Operand 57720 states and 79759 transitions. [2021-11-25 20:23:52,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2021-11-25 20:23:52,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:23:52,256 INFO L514 BasicCegarLoop]: trace histogram [55, 50, 50, 50, 50, 50, 50, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:52,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-25 20:23:52,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50acf814-4ba3-46b7-ba12-deb8a3d312e7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-25 20:23:52,460 INFO L402 AbstractCegarLoop]: === Iteration 14 === 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:23:52,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:23:52,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1499938538, now seen corresponding path program 1 times [2021-11-25 20:23:52,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:23:52,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359845055] [2021-11-25 20:23:52,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:52,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:23:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 10356 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10349 trivial. 0 not checked. [2021-11-25 20:23:53,000 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:23:53,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359845055] [2021-11-25 20:23:53,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359845055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:23:53,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:23:53,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:23:53,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796773758] [2021-11-25 20:23:53,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:23:53,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:23:53,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:23:53,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:23:53,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:23:53,006 INFO L87 Difference]: Start difference. First operand 57720 states and 79759 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, (65), 2 states have call predecessors, (65), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2021-11-25 20:23:55,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:24:01,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:01,146 INFO L93 Difference]: Finished difference Result 121165 states and 166442 transitions. [2021-11-25 20:24:01,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:24:01,147 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, (65), 2 states have call predecessors, (65), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) Word has length 608 [2021-11-25 20:24:01,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:01,373 INFO L225 Difference]: With dead ends: 121165 [2021-11-25 20:24:01,374 INFO L226 Difference]: Without dead ends: 64173 [2021-11-25 20:24:01,498 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 20:24:01,499 INFO L933 BasicCegarLoop]: 4125 mSDtfsCounter, 2760 mSDsluCounter, 3010 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2760 SdHoareTripleChecker+Valid, 6739 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:01,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2760 Valid, 6739 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-11-25 20:24:01,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64173 states. [2021-11-25 20:24:04,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64173 to 64147. [2021-11-25 20:24:04,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64147 states, 38998 states have (on average 1.264552028309144) internal successors, (49315), 39552 states have internal predecessors, (49315), 19078 states have call successors, (19078), 6134 states have call predecessors, (19078), 6069 states have return successors, (19278), 18707 states have call predecessors, (19278), 19078 states have call successors, (19278) [2021-11-25 20:24:05,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64147 states to 64147 states and 87671 transitions. [2021-11-25 20:24:05,051 INFO L78 Accepts]: Start accepts. Automaton has 64147 states and 87671 transitions. Word has length 608 [2021-11-25 20:24:05,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:05,052 INFO L470 AbstractCegarLoop]: Abstraction has 64147 states and 87671 transitions. [2021-11-25 20:24:05,052 INFO L471 AbstractCegarLoop]: INTERPOLANT 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, (65), 2 states have call predecessors, (65), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2021-11-25 20:24:05,053 INFO L276 IsEmpty]: Start isEmpty. Operand 64147 states and 87671 transitions. [2021-11-25 20:24:05,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2021-11-25 20:24:05,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:05,084 INFO L514 BasicCegarLoop]: trace histogram [54, 49, 49, 49, 49, 49, 49, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:05,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 20:24:05,084 INFO L402 AbstractCegarLoop]: === Iteration 15 === 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:24:05,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:05,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1183930585, now seen corresponding path program 1 times [2021-11-25 20:24:05,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:05,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437459429] [2021-11-25 20:24:05,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:05,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 9954 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9947 trivial. 0 not checked. [2021-11-25 20:24:05,605 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:05,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437459429] [2021-11-25 20:24:05,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437459429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:05,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:05,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:24:05,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259521144] [2021-11-25 20:24:05,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:05,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:24:05,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:05,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:24:05,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:24:05,608 INFO L87 Difference]: Start difference. First operand 64147 states and 87671 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59)