./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-uvc-uvcvideo.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_d5fb45ea-3858-48ab-be60-e2673ead2caf/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5fb45ea-3858-48ab-be60-e2673ead2caf/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_d5fb45ea-3858-48ab-be60-e2673ead2caf/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5fb45ea-3858-48ab-be60-e2673ead2caf/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-uvc-uvcvideo.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5fb45ea-3858-48ab-be60-e2673ead2caf/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_d5fb45ea-3858-48ab-be60-e2673ead2caf/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 5dfd7cb83fe5e8f1a1c790b3fb965075f4c8177484030f9001ac667825217333 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:52:37,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:52:37,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:52:37,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:52:37,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:52:37,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:52:37,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:52:37,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:52:37,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:52:37,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:52:37,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:52:37,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:52:37,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:52:37,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:52:37,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:52:37,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:52:37,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:52:37,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:52:37,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:52:37,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:52:37,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:52:37,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:52:37,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:52:37,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:52:37,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:52:37,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:52:37,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:52:37,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:52:37,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:52:37,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:52:37,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:52:37,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:52:37,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:52:37,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:52:37,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:52:37,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:52:37,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:52:37,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:52:37,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:52:37,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:52:37,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:52:37,946 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5fb45ea-3858-48ab-be60-e2673ead2caf/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:52:37,988 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:52:37,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:52:37,989 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:52:37,989 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:52:37,990 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:52:37,996 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:52:37,997 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:52:37,997 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:52:37,997 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:52:37,997 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:52:37,998 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:52:37,999 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:52:37,999 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:52:37,999 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:52:38,000 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:52:38,000 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:52:38,000 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:52:38,000 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:52:38,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:52:38,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:52:38,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:52:38,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:52:38,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:52:38,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:52:38,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:52:38,003 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:52:38,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:52:38,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:52:38,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:52:38,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:52:38,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:52:38,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:52:38,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:52:38,007 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:52:38,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:52:38,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:52:38,007 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:52:38,008 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:52:38,008 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_d5fb45ea-3858-48ab-be60-e2673ead2caf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5fb45ea-3858-48ab-be60-e2673ead2caf/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dfd7cb83fe5e8f1a1c790b3fb965075f4c8177484030f9001ac667825217333 [2021-11-25 18:52:38,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:52:38,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:52:38,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:52:38,344 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:52:38,346 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:52:38,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5fb45ea-3858-48ab-be60-e2673ead2caf/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-uvc-uvcvideo.cil.i [2021-11-25 18:52:38,427 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5fb45ea-3858-48ab-be60-e2673ead2caf/bin/utaipan-eEHZpOm5b7/data/f67ba5dcf/65dadfbb6bb34005b29e062a6ebd3e34/FLAGa01463ad2 [2021-11-25 18:52:39,561 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:52:39,562 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5fb45ea-3858-48ab-be60-e2673ead2caf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-uvc-uvcvideo.cil.i [2021-11-25 18:52:39,670 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5fb45ea-3858-48ab-be60-e2673ead2caf/bin/utaipan-eEHZpOm5b7/data/f67ba5dcf/65dadfbb6bb34005b29e062a6ebd3e34/FLAGa01463ad2 [2021-11-25 18:52:39,775 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5fb45ea-3858-48ab-be60-e2673ead2caf/bin/utaipan-eEHZpOm5b7/data/f67ba5dcf/65dadfbb6bb34005b29e062a6ebd3e34 [2021-11-25 18:52:39,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:52:39,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:52:39,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:52:39,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:52:39,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:52:39,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:52:39" (1/1) ... [2021-11-25 18:52:39,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73bdb289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:52:39, skipping insertion in model container [2021-11-25 18:52:39,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:52:39" (1/1) ... [2021-11-25 18:52:39,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:52:40,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:52:45,949 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_d5fb45ea-3858-48ab-be60-e2673ead2caf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-uvc-uvcvideo.cil.i[622320,622333] [2021-11-25 18:52:45,952 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_d5fb45ea-3858-48ab-be60-e2673ead2caf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-uvc-uvcvideo.cil.i[622489,622502] [2021-11-25 18:52:45,953 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_d5fb45ea-3858-48ab-be60-e2673ead2caf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-uvc-uvcvideo.cil.i[622656,622669] [2021-11-25 18:52:45,953 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_d5fb45ea-3858-48ab-be60-e2673ead2caf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-uvc-uvcvideo.cil.i[622824,622837] [2021-11-25 18:52:45,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:52:46,139 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:52:47,012 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_d5fb45ea-3858-48ab-be60-e2673ead2caf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-uvc-uvcvideo.cil.i[622320,622333] [2021-11-25 18:52:47,013 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_d5fb45ea-3858-48ab-be60-e2673ead2caf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-uvc-uvcvideo.cil.i[622489,622502] [2021-11-25 18:52:47,014 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_d5fb45ea-3858-48ab-be60-e2673ead2caf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-uvc-uvcvideo.cil.i[622656,622669] [2021-11-25 18:52:47,014 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_d5fb45ea-3858-48ab-be60-e2673ead2caf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-uvc-uvcvideo.cil.i[622824,622837] [2021-11-25 18:52:47,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:52:47,328 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:52:47,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:52:47 WrapperNode [2021-11-25 18:52:47,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:52:47,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:52:47,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:52:47,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:52:47,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:52:47" (1/1) ... [2021-11-25 18:52:47,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:52:47" (1/1) ... [2021-11-25 18:52:48,113 INFO L137 Inliner]: procedures = 616, calls = 8909, calls flagged for inlining = 315, calls inlined = 243, statements flattened = 13493 [2021-11-25 18:52:48,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:52:48,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:52:48,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:52:48,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:52:48,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:52:47" (1/1) ... [2021-11-25 18:52:48,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:52:47" (1/1) ... [2021-11-25 18:52:48,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:52:47" (1/1) ... [2021-11-25 18:52:48,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:52:47" (1/1) ... [2021-11-25 18:52:48,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:52:47" (1/1) ... [2021-11-25 18:52:48,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:52:47" (1/1) ... [2021-11-25 18:52:48,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:52:47" (1/1) ... [2021-11-25 18:52:48,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:52:48,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:52:48,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:52:48,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:52:48,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:52:47" (1/1) ... [2021-11-25 18:52:48,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:52:48,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5fb45ea-3858-48ab-be60-e2673ead2caf/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:52:48,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5fb45ea-3858-48ab-be60-e2673ead2caf/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:52:48,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5fb45ea-3858-48ab-be60-e2673ead2caf/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:52:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-25 18:52:48,986 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-25 18:52:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-11-25 18:52:48,986 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-11-25 18:52:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:52:48,987 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:52:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:52:48,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:52:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_v4l2_read [2021-11-25 18:52:48,987 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_v4l2_read [2021-11-25 18:52:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_v4l2_release [2021-11-25 18:52:48,987 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_v4l2_release [2021-11-25 18:52:48,988 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_find_control [2021-11-25 18:52:48,988 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_find_control [2021-11-25 18:52:48,988 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2021-11-25 18:52:48,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2021-11-25 18:52:48,988 INFO L130 BoogieDeclarations]: Found specification of procedure __uvc_ctrl_add_mapping [2021-11-25 18:52:48,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __uvc_ctrl_add_mapping [2021-11-25 18:52:48,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 18:52:48,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 18:52:48,989 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_buffer_finish [2021-11-25 18:52:48,989 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_buffer_finish [2021-11-25 18:52:48,989 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2021-11-25 18:52:48,989 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2021-11-25 18:52:48,990 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-11-25 18:52:48,990 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_wait_prepare [2021-11-25 18:52:48,990 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_wait_prepare [2021-11-25 18:52:48,990 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_alloc_urb_buffers [2021-11-25 18:52:48,990 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_alloc_urb_buffers [2021-11-25 18:52:48,990 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_video_clock_reset [2021-11-25 18:52:48,991 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_video_clock_reset [2021-11-25 18:52:48,991 INFO L130 BoogieDeclarations]: Found specification of procedure usb_match_one_id [2021-11-25 18:52:48,991 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_match_one_id [2021-11-25 18:52:48,992 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 18:52:48,992 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 18:52:48,992 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-25 18:52:48,992 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get_ts [2021-11-25 18:52:48,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get_ts [2021-11-25 18:52:48,993 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_entity_by_id [2021-11-25 18:52:48,993 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_entity_by_id [2021-11-25 18:52:48,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:52:48,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:52:48,994 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-11-25 18:52:48,994 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-11-25 18:52:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 18:52:48,995 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 18:52:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_49 [2021-11-25 18:52:48,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_49 [2021-11-25 18:52:48,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:52:48,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:52:48,996 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 18:52:48,996 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 18:52:48,996 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2021-11-25 18:52:48,997 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2021-11-25 18:52:48,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:52:48,998 INFO L130 BoogieDeclarations]: Found specification of procedure __chk_range_not_ok [2021-11-25 18:52:48,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __chk_range_not_ok [2021-11-25 18:52:48,998 INFO L130 BoogieDeclarations]: Found specification of procedure __uvc_query_v4l2_ctrl [2021-11-25 18:52:48,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __uvc_query_v4l2_ctrl [2021-11-25 18:52:48,998 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_data [2021-11-25 18:52:48,998 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_data [2021-11-25 18:52:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-25 18:52:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-25 18:52:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2021-11-25 18:52:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2021-11-25 18:52:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_v4l2_ioctl [2021-11-25 18:52:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_v4l2_ioctl [2021-11-25 18:52:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 18:52:49,000 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 18:52:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_populate_cache [2021-11-25 18:52:49,001 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_populate_cache [2021-11-25 18:52:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:52:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_add_info [2021-11-25 18:52:49,001 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_add_info [2021-11-25 18:52:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 18:52:49,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 18:52:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_buffer_done [2021-11-25 18:52:49,003 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_buffer_done [2021-11-25 18:52:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:52:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure __uvc_query_ctrl [2021-11-25 18:52:49,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __uvc_query_ctrl [2021-11-25 18:52:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:52:49,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:52:49,004 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_wait_finish [2021-11-25 18:52:49,005 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_wait_finish [2021-11-25 18:52:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_reset_resume [2021-11-25 18:52:49,005 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_reset_resume [2021-11-25 18:52:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2021-11-25 18:52:49,005 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2021-11-25 18:52:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:52:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user [2021-11-25 18:52:49,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user [2021-11-25 18:52:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:52:49,006 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:52:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 18:52:49,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 18:52:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-25 18:52:49,007 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-25 18:52:49,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 18:52:49,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 18:52:49,007 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_scan_chain_forward [2021-11-25 18:52:49,008 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_scan_chain_forward [2021-11-25 18:52:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2021-11-25 18:52:49,008 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2021-11-25 18:52:49,009 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_commit_video [2021-11-25 18:52:49,009 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_commit_video [2021-11-25 18:52:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-11-25 18:52:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-25 18:52:49,012 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-25 18:52:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64_rem [2021-11-25 18:52:49,013 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64_rem [2021-11-25 18:52:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 18:52:49,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 18:52:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:52:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2021-11-25 18:52:49,021 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2021-11-25 18:52:49,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 18:52:49,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 18:52:49,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 18:52:49,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 18:52:49,023 INFO L130 BoogieDeclarations]: Found specification of procedure __uvc_ctrl_get [2021-11-25 18:52:49,023 INFO L138 BoogieDeclarations]: Found implementation of procedure __uvc_ctrl_get [2021-11-25 18:52:49,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:52:49,023 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_find_endpoint [2021-11-25 18:52:49,023 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_find_endpoint [2021-11-25 18:52:49,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:52:49,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:52:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:52:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 18:52:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_endpoint_max_bpi [2021-11-25 18:52:49,024 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_endpoint_max_bpi [2021-11-25 18:52:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:52:49,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:52:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_set_video_ctrl [2021-11-25 18:52:49,025 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_set_video_ctrl [2021-11-25 18:52:49,025 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-25 18:52:49,025 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-25 18:52:49,025 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_delete [2021-11-25 18:52:49,025 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_delete [2021-11-25 18:52:49,025 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_commit_entity [2021-11-25 18:52:49,025 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_commit_entity [2021-11-25 18:52:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_free_urb_buffers [2021-11-25 18:52:49,026 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_free_urb_buffers [2021-11-25 18:52:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 18:52:49,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 18:52:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_del_event [2021-11-25 18:52:49,026 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_del_event [2021-11-25 18:52:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user [2021-11-25 18:52:49,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user [2021-11-25 18:52:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_v4l2_open [2021-11-25 18:52:49,027 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_v4l2_open [2021-11-25 18:52:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:52:49,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:52:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-11-25 18:52:49,027 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-11-25 18:52:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:52:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:52:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:52:49,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:52:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2021-11-25 18:52:49,029 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2021-11-25 18:52:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_fill_event [2021-11-25 18:52:49,029 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_fill_event [2021-11-25 18:52:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-11-25 18:52:49,029 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-11-25 18:52:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 18:52:49,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 18:52:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_get_plane_payload [2021-11-25 18:52:49,030 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_get_plane_payload [2021-11-25 18:52:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2021-11-25 18:52:49,030 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2021-11-25 18:52:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-11-25 18:52:49,030 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-11-25 18:52:49,031 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2021-11-25 18:52:49,031 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2021-11-25 18:52:49,031 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-11-25 18:52:49,031 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-11-25 18:52:49,031 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_debugfs_cleanup [2021-11-25 18:52:49,031 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_debugfs_cleanup [2021-11-25 18:52:49,031 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2021-11-25 18:52:49,032 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2021-11-25 18:52:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 18:52:49,032 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 18:52:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_queue_fh [2021-11-25 18:52:49,032 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_event_queue_fh [2021-11-25 18:52:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_init_video [2021-11-25 18:52:49,032 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_init_video [2021-11-25 18:52:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_status_start [2021-11-25 18:52:49,033 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_status_start [2021-11-25 18:52:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:52:49,033 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:52:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_intf [2021-11-25 18:52:49,033 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_intf [2021-11-25 18:52:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_5_4 [2021-11-25 18:52:49,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_5_4 [2021-11-25 18:52:49,034 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2021-11-25 18:52:49,034 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2021-11-25 18:52:49,034 INFO L130 BoogieDeclarations]: Found specification of procedure __uvc_find_control [2021-11-25 18:52:49,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __uvc_find_control [2021-11-25 18:52:49,034 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_video_clock_cleanup [2021-11-25 18:52:49,034 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_video_clock_cleanup [2021-11-25 18:52:49,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-25 18:52:49,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-25 18:52:49,035 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2021-11-25 18:52:49,035 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2021-11-25 18:52:49,035 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64 [2021-11-25 18:52:49,035 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64 [2021-11-25 18:52:49,035 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_buffer_prepare [2021-11-25 18:52:49,035 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_buffer_prepare [2021-11-25 18:52:49,036 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-25 18:52:49,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-25 18:52:49,036 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_set_zoom [2021-11-25 18:52:49,036 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_set_zoom [2021-11-25 18:52:49,036 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_test_bit [2021-11-25 18:52:49,036 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_test_bit [2021-11-25 18:52:49,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:52:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 18:52:49,037 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 18:52:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure copy_in_user [2021-11-25 18:52:49,037 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_in_user [2021-11-25 18:52:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:52:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_uvc_cleanup_10_2 [2021-11-25 18:52:49,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_uvc_cleanup_10_2 [2021-11-25 18:52:49,038 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_status_stop [2021-11-25 18:52:49,038 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_status_stop [2021-11-25 18:52:49,038 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_alloc_entity [2021-11-25 18:52:49,038 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_alloc_entity [2021-11-25 18:52:49,038 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2021-11-25 18:52:49,038 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2021-11-25 18:52:49,038 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_query_ctrl [2021-11-25 18:52:49,039 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_query_ctrl [2021-11-25 18:52:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:52:49,040 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-25 18:52:49,043 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-25 18:52:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-25 18:52:49,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-25 18:52:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 18:52:49,044 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 18:52:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_dismiss_privileges [2021-11-25 18:52:49,044 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_dismiss_privileges [2021-11-25 18:52:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 18:52:49,045 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 18:52:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irqlock_of_uvc_video_queue [2021-11-25 18:52:49,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irqlock_of_uvc_video_queue [2021-11-25 18:52:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-25 18:52:49,046 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-25 18:52:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~__u8~0~X~$Pointer$~TO~~__s32~0 [2021-11-25 18:52:49,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~__u8~0~X~$Pointer$~TO~~__s32~0 [2021-11-25 18:52:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:52:49,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:52:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_video_clock_host_sof [2021-11-25 18:52:49,047 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_video_clock_host_sof [2021-11-25 18:52:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-11-25 18:52:49,047 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-11-25 18:52:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 18:52:49,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 18:52:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-25 18:52:49,048 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-25 18:52:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_uvc_clock [2021-11-25 18:52:49,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_uvc_clock [2021-11-25 18:52:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure compat_alloc_user_space [2021-11-25 18:52:49,048 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_alloc_user_space [2021-11-25 18:52:49,049 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_plane_size [2021-11-25 18:52:49,049 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_plane_size [2021-11-25 18:52:49,049 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2021-11-25 18:52:49,049 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2021-11-25 18:52:49,049 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_print_terms [2021-11-25 18:52:49,049 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_print_terms [2021-11-25 18:52:49,049 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-25 18:52:49,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-25 18:52:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_has_privileges [2021-11-25 18:52:49,050 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_has_privileges [2021-11-25 18:52:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_video_enable [2021-11-25 18:52:49,050 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_video_enable [2021-11-25 18:52:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:52:49,050 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:52:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:52:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:52:49,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:52:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-11-25 18:52:49,051 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-11-25 18:52:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure media_entity_init [2021-11-25 18:52:49,051 INFO L138 BoogieDeclarations]: Found implementation of procedure media_entity_init [2021-11-25 18:52:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 18:52:49,051 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 18:52:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_entity_match_guid [2021-11-25 18:52:49,052 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_entity_match_guid [2021-11-25 18:52:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-25 18:52:49,052 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-25 18:52:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_uninit_video [2021-11-25 18:52:49,052 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_uninit_video [2021-11-25 18:52:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_debugfs_cleanup_stream [2021-11-25 18:52:49,053 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_debugfs_cleanup_stream [2021-11-25 18:52:49,053 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2021-11-25 18:52:49,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2021-11-25 18:52:49,053 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_queue_enable [2021-11-25 18:52:49,053 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_queue_enable [2021-11-25 18:52:49,053 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_get_video_ctrl [2021-11-25 18:52:49,053 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_get_video_ctrl [2021-11-25 18:52:49,054 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit [2021-11-25 18:52:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit [2021-11-25 18:52:49,054 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-25 18:52:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-25 18:52:49,054 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_get_drv_priv [2021-11-25 18:52:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_get_drv_priv [2021-11-25 18:52:49,054 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-25 18:52:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure strcasecmp [2021-11-25 18:52:49,055 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-25 18:52:49,055 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-25 18:52:49,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_49___0 [2021-11-25 18:52:49,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_49___0 [2021-11-25 18:52:49,055 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_buffer_queue [2021-11-25 18:52:49,055 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_buffer_queue [2021-11-25 18:52:49,055 INFO L130 BoogieDeclarations]: Found specification of procedure __uvc_resume [2021-11-25 18:52:49,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __uvc_resume [2021-11-25 18:52:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:52:49,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:52:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_unregister_video [2021-11-25 18:52:49,056 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_unregister_video [2021-11-25 18:52:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intf [2021-11-25 18:52:49,056 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intf [2021-11-25 18:52:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_resume [2021-11-25 18:52:49,057 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_resume [2021-11-25 18:52:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure kmemdup [2021-11-25 18:52:49,057 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemdup [2021-11-25 18:52:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure media_entity_cleanup [2021-11-25 18:52:49,057 INFO L138 BoogieDeclarations]: Found implementation of procedure media_entity_cleanup [2021-11-25 18:52:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_queue_streaming [2021-11-25 18:52:49,057 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_queue_streaming [2021-11-25 18:52:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_disconnect [2021-11-25 18:52:49,058 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_disconnect [2021-11-25 18:52:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:52:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure usb_string [2021-11-25 18:52:49,058 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_string [2021-11-25 18:52:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_get_zoom [2021-11-25 18:52:49,058 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_get_zoom [2021-11-25 18:52:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:52:49,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:52:50,333 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:52:50,337 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:52:50,489 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:52:50,853 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11812: SUMMARY for call __copy_to_user_nocheck_#t~ret1079#1 := copy_user_generic(__copy_to_user_nocheck_~dst#1.base, __copy_to_user_nocheck_~dst#1.offset, __copy_to_user_nocheck_~src#1.base, __copy_to_user_nocheck_~src#1.offset, __copy_to_user_nocheck_~size#1); srcloc: null [2021-11-25 18:52:50,853 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11849: assume 0 != __copy_to_user_nocheck_~tmp___1~14#1;__copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~18#1; [2021-11-25 18:52:50,853 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11849: assume !(0 != __copy_to_user_nocheck_~tmp___1~14#1);__copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~18#1; [2021-11-25 18:52:50,853 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11804: assume 10 == __copy_to_user_nocheck_~size#1 % 4294967296; [2021-11-25 18:52:50,853 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11804: assume !(10 == __copy_to_user_nocheck_~size#1 % 4294967296); [2021-11-25 18:52:50,854 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11808: assume 16 == __copy_to_user_nocheck_~size#1 % 4294967296; [2021-11-25 18:52:50,854 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11808: assume !(16 == __copy_to_user_nocheck_~size#1 % 4294967296); [2021-11-25 18:52:50,854 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11796: assume 4 == __copy_to_user_nocheck_~size#1 % 4294967296; [2021-11-25 18:52:50,854 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11796: assume !(4 == __copy_to_user_nocheck_~size#1 % 4294967296); [2021-11-25 18:52:50,854 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11800: assume 8 == __copy_to_user_nocheck_~size#1 % 4294967296; [2021-11-25 18:52:50,854 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11800: assume !(8 == __copy_to_user_nocheck_~size#1 % 4294967296); [2021-11-25 18:52:50,854 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11833: assume -9223372036854775808 <= __copy_to_user_nocheck_#t~ret1077#1 && __copy_to_user_nocheck_#t~ret1077#1 <= 9223372036854775807;__copy_to_user_nocheck_~tmp___0~24#1 := __copy_to_user_nocheck_#t~ret1077#1;havoc __copy_to_user_nocheck_#t~ret1077#1; [2021-11-25 18:52:50,855 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11792: assume 2 == __copy_to_user_nocheck_~size#1 % 4294967296; [2021-11-25 18:52:50,855 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11792: assume !(2 == __copy_to_user_nocheck_~size#1 % 4294967296); [2021-11-25 18:52:50,855 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11805: SUMMARY for call __copy_to_user_nocheck_#t~ret1077#1 := ldv__builtin_expect((if 0 != __copy_to_user_nocheck_~ret~18#1 then 1 else 0), 0); srcloc: null [2021-11-25 18:52:50,855 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11809: SUMMARY for call __copy_to_user_nocheck_#t~ret1078#1 := ldv__builtin_expect((if 0 != __copy_to_user_nocheck_~ret~18#1 then 1 else 0), 0); srcloc: null [2021-11-25 18:52:50,855 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11797: __copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~18#1; [2021-11-25 18:52:50,855 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11859: __copy_to_user_nocheck_~tmp___2~11#1 := __copy_to_user_nocheck_#t~ret1079#1;havoc __copy_to_user_nocheck_#t~ret1079#1;__copy_to_user_nocheck_#res#1 := (if __copy_to_user_nocheck_~tmp___2~11#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_to_user_nocheck_~tmp___2~11#1 % 18446744073709551616 % 4294967296 else __copy_to_user_nocheck_~tmp___2~11#1 % 18446744073709551616 % 4294967296 - 4294967296); [2021-11-25 18:52:50,856 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11801: __copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~18#1; [2021-11-25 18:52:50,856 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11789: __copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~18#1; [2021-11-25 18:52:50,856 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11793: __copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~18#1; [2021-11-25 18:52:50,856 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume 1 == __copy_to_user_nocheck_~size#1 % 4294967296; [2021-11-25 18:52:50,856 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !(1 == __copy_to_user_nocheck_~size#1 % 4294967296); [2021-11-25 18:52:50,856 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11847: assume -9223372036854775808 <= __copy_to_user_nocheck_#t~ret1078#1 && __copy_to_user_nocheck_#t~ret1078#1 <= 9223372036854775807;__copy_to_user_nocheck_~tmp___1~14#1 := __copy_to_user_nocheck_#t~ret1078#1;havoc __copy_to_user_nocheck_#t~ret1078#1; [2021-11-25 18:52:50,857 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11835: assume 0 != __copy_to_user_nocheck_~tmp___0~24#1;__copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~18#1; [2021-11-25 18:52:50,857 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11835: assume !(0 != __copy_to_user_nocheck_~tmp___0~24#1);__copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~18#1; [2021-11-25 18:52:53,618 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11700: SUMMARY for call __copy_from_user_nocheck_#t~ret1073#1 := ldv__builtin_expect((if 0 != __copy_from_user_nocheck_~ret~17#1 then 1 else 0), 0); srcloc: null [2021-11-25 18:52:53,618 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11692: __copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~17#1; [2021-11-25 18:52:53,618 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11696: SUMMARY for call __copy_from_user_nocheck_#t~ret1072#1 := ldv__builtin_expect((if 0 != __copy_from_user_nocheck_~ret~17#1 then 1 else 0), 0); srcloc: null [2021-11-25 18:52:53,619 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11729: assume -9223372036854775808 <= __copy_from_user_nocheck_#t~ret1072#1 && __copy_from_user_nocheck_#t~ret1072#1 <= 9223372036854775807;__copy_from_user_nocheck_~tmp___0~23#1 := __copy_from_user_nocheck_#t~ret1072#1;havoc __copy_from_user_nocheck_#t~ret1072#1; [2021-11-25 18:52:53,619 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11684: __copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~17#1; [2021-11-25 18:52:53,619 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11746: assume 0 != __copy_from_user_nocheck_~tmp___1~13#1;__copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~17#1; [2021-11-25 18:52:53,619 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11746: assume !(0 != __copy_from_user_nocheck_~tmp___1~13#1);__copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~17#1; [2021-11-25 18:52:53,619 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11688: __copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~17#1; [2021-11-25 18:52:53,619 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11680: __copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~17#1; [2021-11-25 18:52:53,619 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11731: assume 0 != __copy_from_user_nocheck_~tmp___0~23#1;__copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~17#1; [2021-11-25 18:52:53,620 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11731: assume !(0 != __copy_from_user_nocheck_~tmp___0~23#1);__copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~17#1; [2021-11-25 18:52:53,620 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11756: __copy_from_user_nocheck_~tmp___2~10#1 := __copy_from_user_nocheck_#t~ret1074#1;havoc __copy_from_user_nocheck_#t~ret1074#1;__copy_from_user_nocheck_#res#1 := (if __copy_from_user_nocheck_~tmp___2~10#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_from_user_nocheck_~tmp___2~10#1 % 18446744073709551616 % 4294967296 else __copy_from_user_nocheck_~tmp___2~10#1 % 18446744073709551616 % 4294967296 - 4294967296); [2021-11-25 18:52:53,620 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume 1 == __copy_from_user_nocheck_~size#1 % 4294967296; [2021-11-25 18:52:53,620 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !(1 == __copy_from_user_nocheck_~size#1 % 4294967296); [2021-11-25 18:52:53,620 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11744: assume -9223372036854775808 <= __copy_from_user_nocheck_#t~ret1073#1 && __copy_from_user_nocheck_#t~ret1073#1 <= 9223372036854775807;__copy_from_user_nocheck_~tmp___1~13#1 := __copy_from_user_nocheck_#t~ret1073#1;havoc __copy_from_user_nocheck_#t~ret1073#1; [2021-11-25 18:52:53,620 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11699: assume 16 == __copy_from_user_nocheck_~size#1 % 4294967296; [2021-11-25 18:52:53,620 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11699: assume !(16 == __copy_from_user_nocheck_~size#1 % 4294967296); [2021-11-25 18:52:53,621 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11703: SUMMARY for call __copy_from_user_nocheck_#t~ret1074#1 := copy_user_generic(__copy_from_user_nocheck_~dst#1.base, __copy_from_user_nocheck_~dst#1.offset, __copy_from_user_nocheck_~src#1.base, __copy_from_user_nocheck_~src#1.offset, __copy_from_user_nocheck_~size#1); srcloc: null [2021-11-25 18:52:53,621 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11691: assume 8 == __copy_from_user_nocheck_~size#1 % 4294967296; [2021-11-25 18:52:53,621 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11691: assume !(8 == __copy_from_user_nocheck_~size#1 % 4294967296); [2021-11-25 18:52:53,621 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11695: assume 10 == __copy_from_user_nocheck_~size#1 % 4294967296; [2021-11-25 18:52:53,621 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11695: assume !(10 == __copy_from_user_nocheck_~size#1 % 4294967296); [2021-11-25 18:52:53,621 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11683: assume 2 == __copy_from_user_nocheck_~size#1 % 4294967296; [2021-11-25 18:52:53,621 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11683: assume !(2 == __copy_from_user_nocheck_~size#1 % 4294967296); [2021-11-25 18:52:53,621 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11687: assume 4 == __copy_from_user_nocheck_~size#1 % 4294967296; [2021-11-25 18:52:53,622 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11687: assume !(4 == __copy_from_user_nocheck_~size#1 % 4294967296); [2021-11-25 18:56:03,075 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 18:56:03,156 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:56:06,153 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:56:06,154 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-25 18:56:06,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:06 BoogieIcfgContainer [2021-11-25 18:56:06,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:56:06,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:56:06,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:56:06,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:56:06,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:52:39" (1/3) ... [2021-11-25 18:56:06,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fb446a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:56:06, skipping insertion in model container [2021-11-25 18:56:06,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:52:47" (2/3) ... [2021-11-25 18:56:06,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fb446a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:56:06, skipping insertion in model container [2021-11-25 18:56:06,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:06" (3/3) ... [2021-11-25 18:56:06,170 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-uvc-uvcvideo.cil.i [2021-11-25 18:56:06,175 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:56:06,176 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 18:56:06,232 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:56:06,239 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 18:56:06,239 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 18:56:06,315 INFO L276 IsEmpty]: Start isEmpty. Operand has 2328 states, 1497 states have (on average 1.3687374749498997) internal successors, (2049), 1517 states have internal predecessors, (2049), 670 states have call successors, (670), 159 states have call predecessors, (670), 158 states have return successors, (661), 655 states have call predecessors, (661), 661 states have call successors, (661) [2021-11-25 18:56:06,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-11-25 18:56:06,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:06,358 INFO L514 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:06,359 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:56:06,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:06,364 INFO L85 PathProgramCache]: Analyzing trace with hash -57173400, now seen corresponding path program 1 times [2021-11-25 18:56:06,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:06,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5795945] [2021-11-25 18:56:06,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:06,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:08,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3782 trivial. 0 not checked. [2021-11-25 18:56:08,086 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:08,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5795945] [2021-11-25 18:56:08,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5795945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:08,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:08,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:56:08,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265861869] [2021-11-25 18:56:08,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:08,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:56:08,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:08,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:56:08,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:56:08,149 INFO L87 Difference]: Start difference. First operand has 2328 states, 1497 states have (on average 1.3687374749498997) internal successors, (2049), 1517 states have internal predecessors, (2049), 670 states have call successors, (670), 159 states have call predecessors, (670), 158 states have return successors, (661), 655 states have call predecessors, (661), 661 states have call successors, (661) Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-25 18:56:10,433 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:20,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:56:26,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:29,432 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:38,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:38,061 INFO L93 Difference]: Finished difference Result 8811 states and 12916 transitions. [2021-11-25 18:56:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:56:38,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 335 [2021-11-25 18:56:38,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:38,141 INFO L225 Difference]: With dead ends: 8811 [2021-11-25 18:56:38,142 INFO L226 Difference]: Without dead ends: 6517 [2021-11-25 18:56:38,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:56:38,170 INFO L933 BasicCegarLoop]: 3748 mSDtfsCounter, 8757 mSDsluCounter, 6024 mSDsCounter, 0 mSdLazyCounter, 4248 mSolverCounterSat, 1524 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9068 SdHoareTripleChecker+Valid, 8544 SdHoareTripleChecker+Invalid, 5775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1524 IncrementalHoareTripleChecker+Valid, 4248 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:38,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9068 Valid, 8544 Invalid, 5775 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1524 Valid, 4248 Invalid, 3 Unknown, 0 Unchecked, 29.1s Time] [2021-11-25 18:56:38,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6517 states. [2021-11-25 18:56:38,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6517 to 6465. [2021-11-25 18:56:38,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6465 states, 4196 states have (on average 1.3696377502383221) internal successors, (5747), 4260 states have internal predecessors, (5747), 1817 states have call successors, (1817), 450 states have call predecessors, (1817), 449 states have return successors, (1813), 1787 states have call predecessors, (1813), 1813 states have call successors, (1813) [2021-11-25 18:56:38,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6465 states to 6465 states and 9377 transitions. [2021-11-25 18:56:38,726 INFO L78 Accepts]: Start accepts. Automaton has 6465 states and 9377 transitions. Word has length 335 [2021-11-25 18:56:38,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:38,733 INFO L470 AbstractCegarLoop]: Abstraction has 6465 states and 9377 transitions. [2021-11-25 18:56:38,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-25 18:56:38,736 INFO L276 IsEmpty]: Start isEmpty. Operand 6465 states and 9377 transitions. [2021-11-25 18:56:38,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-11-25 18:56:38,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:38,749 INFO L514 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 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] [2021-11-25 18:56:38,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:56:38,751 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:56:38,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:38,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1215945735, now seen corresponding path program 1 times [2021-11-25 18:56:38,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:38,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264187535] [2021-11-25 18:56:38,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:38,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:39,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3785 trivial. 0 not checked. [2021-11-25 18:56:39,671 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:39,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264187535] [2021-11-25 18:56:39,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264187535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:39,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:39,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:56:39,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302298664] [2021-11-25 18:56:39,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:39,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:56:39,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:39,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:56:39,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:56:39,678 INFO L87 Difference]: Start difference. First operand 6465 states and 9377 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-25 18:56:41,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:45,108 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:56:47,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:51,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:55,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:55,214 INFO L93 Difference]: Finished difference Result 14958 states and 21654 transitions. [2021-11-25 18:56:55,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:56:55,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 339 [2021-11-25 18:56:55,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:55,284 INFO L225 Difference]: With dead ends: 14958 [2021-11-25 18:56:55,284 INFO L226 Difference]: Without dead ends: 8556 [2021-11-25 18:56:55,311 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 18:56:55,312 INFO L933 BasicCegarLoop]: 3459 mSDtfsCounter, 2926 mSDsluCounter, 3258 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 17 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2927 SdHoareTripleChecker+Valid, 6212 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:55,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2927 Valid, 6212 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1112 Invalid, 3 Unknown, 0 Unchecked, 15.1s Time] [2021-11-25 18:56:55,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8556 states. [2021-11-25 18:56:55,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8556 to 8552. [2021-11-25 18:56:55,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8552 states, 5560 states have (on average 1.367086330935252) internal successors, (7601), 5642 states have internal predecessors, (7601), 2377 states have call successors, (2377), 613 states have call predecessors, (2377), 612 states have return successors, (2374), 2342 states have call predecessors, (2374), 2373 states have call successors, (2374) [2021-11-25 18:56:55,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8552 states to 8552 states and 12352 transitions. [2021-11-25 18:56:55,762 INFO L78 Accepts]: Start accepts. Automaton has 8552 states and 12352 transitions. Word has length 339 [2021-11-25 18:56:55,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:55,767 INFO L470 AbstractCegarLoop]: Abstraction has 8552 states and 12352 transitions. [2021-11-25 18:56:55,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-25 18:56:55,769 INFO L276 IsEmpty]: Start isEmpty. Operand 8552 states and 12352 transitions. [2021-11-25 18:56:55,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-11-25 18:56:55,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:55,778 INFO L514 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:55,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:56:55,778 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:56:55,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:55,779 INFO L85 PathProgramCache]: Analyzing trace with hash 152797830, now seen corresponding path program 1 times [2021-11-25 18:56:55,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:55,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959614555] [2021-11-25 18:56:55,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:55,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:56,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3782 trivial. 0 not checked. [2021-11-25 18:56:56,567 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:56,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959614555] [2021-11-25 18:56:56,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959614555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:56,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:56,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:56:56,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510431765] [2021-11-25 18:56:56,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:56,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:56:56,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:56,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:56:56,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:56:56,570 INFO L87 Difference]: Start difference. First operand 8552 states and 12352 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-25 18:56:58,801 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:04,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:06,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:09,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:09,702 INFO L93 Difference]: Finished difference Result 21577 states and 30944 transitions. [2021-11-25 18:57:09,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:57:09,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 345 [2021-11-25 18:57:09,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:09,792 INFO L225 Difference]: With dead ends: 21577 [2021-11-25 18:57:09,792 INFO L226 Difference]: Without dead ends: 13088 [2021-11-25 18:57:09,831 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 18:57:09,832 INFO L933 BasicCegarLoop]: 3248 mSDtfsCounter, 1749 mSDsluCounter, 3306 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1749 SdHoareTripleChecker+Valid, 6040 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:09,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1749 Valid, 6040 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1102 Invalid, 2 Unknown, 0 Unchecked, 12.8s Time] [2021-11-25 18:57:09,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13088 states. [2021-11-25 18:57:10,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13088 to 13058. [2021-11-25 18:57:10,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13058 states, 8387 states have (on average 1.3497078812447836) internal successors, (11320), 8509 states have internal predecessors, (11320), 3645 states have call successors, (3645), 1024 states have call predecessors, (3645), 1023 states have return successors, (3642), 3588 states have call predecessors, (3642), 3641 states have call successors, (3642) [2021-11-25 18:57:10,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13058 states to 13058 states and 18607 transitions. [2021-11-25 18:57:10,445 INFO L78 Accepts]: Start accepts. Automaton has 13058 states and 18607 transitions. Word has length 345 [2021-11-25 18:57:10,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:10,447 INFO L470 AbstractCegarLoop]: Abstraction has 13058 states and 18607 transitions. [2021-11-25 18:57:10,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-25 18:57:10,447 INFO L276 IsEmpty]: Start isEmpty. Operand 13058 states and 18607 transitions. [2021-11-25 18:57:10,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2021-11-25 18:57:10,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:10,459 INFO L514 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:57:10,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:57:10,459 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:57:10,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:10,460 INFO L85 PathProgramCache]: Analyzing trace with hash 414727762, now seen corresponding path program 1 times [2021-11-25 18:57:10,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:10,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550613825] [2021-11-25 18:57:10,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:10,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3782 trivial. 0 not checked. [2021-11-25 18:57:11,293 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:11,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550613825] [2021-11-25 18:57:11,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550613825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:11,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:11,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:57:11,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424636451] [2021-11-25 18:57:11,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:11,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:57:11,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:11,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:57:11,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:57:11,297 INFO L87 Difference]: Start difference. First operand 13058 states and 18607 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-25 18:57:13,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:18,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:20,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:22,289 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:25,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:25,657 INFO L93 Difference]: Finished difference Result 32978 states and 47026 transitions. [2021-11-25 18:57:25,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:57:25,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 363 [2021-11-25 18:57:25,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:25,750 INFO L225 Difference]: With dead ends: 32978 [2021-11-25 18:57:25,750 INFO L226 Difference]: Without dead ends: 19983 [2021-11-25 18:57:25,802 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 18:57:25,803 INFO L933 BasicCegarLoop]: 3456 mSDtfsCounter, 2803 mSDsluCounter, 3294 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2803 SdHoareTripleChecker+Valid, 6246 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:25,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2803 Valid, 6246 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1102 Invalid, 3 Unknown, 0 Unchecked, 13.9s Time] [2021-11-25 18:57:25,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19983 states. [2021-11-25 18:57:26,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19983 to 19949. [2021-11-25 18:57:26,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19949 states, 12920 states have (on average 1.353173374613003) internal successors, (17483), 13142 states have internal predecessors, (17483), 5457 states have call successors, (5457), 1570 states have call predecessors, (5457), 1569 states have return successors, (5454), 5339 states have call predecessors, (5454), 5453 states have call successors, (5454) [2021-11-25 18:57:26,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19949 states to 19949 states and 28394 transitions. [2021-11-25 18:57:26,677 INFO L78 Accepts]: Start accepts. Automaton has 19949 states and 28394 transitions. Word has length 363 [2021-11-25 18:57:26,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:26,680 INFO L470 AbstractCegarLoop]: Abstraction has 19949 states and 28394 transitions. [2021-11-25 18:57:26,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-25 18:57:26,681 INFO L276 IsEmpty]: Start isEmpty. Operand 19949 states and 28394 transitions. [2021-11-25 18:57:26,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-11-25 18:57:26,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:26,691 INFO L514 BasicCegarLoop]: trace histogram [33, 31, 31, 31, 31, 31, 31, 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] [2021-11-25 18:57:26,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:57:26,692 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:57:26,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:26,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1459529783, now seen corresponding path program 1 times [2021-11-25 18:57:26,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:26,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866013357] [2021-11-25 18:57:26,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:26,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:27,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3855 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3846 trivial. 0 not checked. [2021-11-25 18:57:27,304 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:27,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866013357] [2021-11-25 18:57:27,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866013357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:27,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:27,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:57:27,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69244862] [2021-11-25 18:57:27,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:27,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:57:27,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:27,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:57:27,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:57:27,309 INFO L87 Difference]: Start difference. First operand 19949 states and 28394 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-25 18:57:29,546 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:31,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:34,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:57:36,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:37,677 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:40,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:43,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:43,854 INFO L93 Difference]: Finished difference Result 43424 states and 61584 transitions. [2021-11-25 18:57:43,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:57:43,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 365 [2021-11-25 18:57:43,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:43,963 INFO L225 Difference]: With dead ends: 43424 [2021-11-25 18:57:43,963 INFO L226 Difference]: Without dead ends: 23538 [2021-11-25 18:57:44,021 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 18:57:44,022 INFO L933 BasicCegarLoop]: 3836 mSDtfsCounter, 1733 mSDsluCounter, 3326 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 6644 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:44,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1734 Valid, 6644 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1226 Invalid, 3 Unknown, 0 Unchecked, 16.0s Time] [2021-11-25 18:57:44,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23538 states. [2021-11-25 18:57:45,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23538 to 23506. [2021-11-25 18:57:45,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23506 states, 15113 states have (on average 1.3438099649308541) internal successors, (20309), 15373 states have internal predecessors, (20309), 6463 states have call successors, (6463), 1934 states have call predecessors, (6463), 1927 states have return successors, (6461), 6306 states have call predecessors, (6461), 6459 states have call successors, (6461) [2021-11-25 18:57:45,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23506 states to 23506 states and 33233 transitions. [2021-11-25 18:57:45,348 INFO L78 Accepts]: Start accepts. Automaton has 23506 states and 33233 transitions. Word has length 365 [2021-11-25 18:57:45,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:45,350 INFO L470 AbstractCegarLoop]: Abstraction has 23506 states and 33233 transitions. [2021-11-25 18:57:45,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-25 18:57:45,351 INFO L276 IsEmpty]: Start isEmpty. Operand 23506 states and 33233 transitions. [2021-11-25 18:57:45,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2021-11-25 18:57:45,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:45,363 INFO L514 BasicCegarLoop]: trace histogram [36, 32, 32, 32, 32, 32, 32, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:57:45,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:57:45,364 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:57:45,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:45,365 INFO L85 PathProgramCache]: Analyzing trace with hash -67193640, now seen corresponding path program 1 times [2021-11-25 18:57:45,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:45,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116203418] [2021-11-25 18:57:45,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:45,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4270 trivial. 0 not checked. [2021-11-25 18:57:46,427 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:46,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116203418] [2021-11-25 18:57:46,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116203418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:46,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:46,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:57:46,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753514845] [2021-11-25 18:57:46,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:46,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:57:46,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:46,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:57:46,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:57:46,429 INFO L87 Difference]: Start difference. First operand 23506 states and 33233 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, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2021-11-25 18:57:48,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:50,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:52,421 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:58,528 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:03,606 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:08,082 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:10,228 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:58:11,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:11,376 INFO L93 Difference]: Finished difference Result 46443 states and 65682 transitions. [2021-11-25 18:58:11,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:58:11,377 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, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 413 [2021-11-25 18:58:11,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:11,558 INFO L225 Difference]: With dead ends: 46443 [2021-11-25 18:58:11,558 INFO L226 Difference]: Without dead ends: 46441 [2021-11-25 18:58:11,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:58:11,582 INFO L933 BasicCegarLoop]: 3630 mSDtfsCounter, 3137 mSDsluCounter, 11650 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3147 SdHoareTripleChecker+Valid, 13605 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:11,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3147 Valid, 13605 Invalid, 2272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2267 Invalid, 3 Unknown, 0 Unchecked, 24.0s Time] [2021-11-25 18:58:11,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46441 states. [2021-11-25 18:58:13,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46441 to 46411. [2021-11-25 18:58:13,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46411 states, 29812 states have (on average 1.3443915201932108) internal successors, (40079), 30330 states have internal predecessors, (40079), 12777 states have call successors, (12777), 3833 states have call predecessors, (12777), 3819 states have return successors, (12785), 12463 states have call predecessors, (12785), 12769 states have call successors, (12785) [2021-11-25 18:58:13,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46411 states to 46411 states and 65641 transitions. [2021-11-25 18:58:13,945 INFO L78 Accepts]: Start accepts. Automaton has 46411 states and 65641 transitions. Word has length 413 [2021-11-25 18:58:13,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:13,946 INFO L470 AbstractCegarLoop]: Abstraction has 46411 states and 65641 transitions. [2021-11-25 18:58:13,947 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, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2021-11-25 18:58:13,947 INFO L276 IsEmpty]: Start isEmpty. Operand 46411 states and 65641 transitions. [2021-11-25 18:58:13,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2021-11-25 18:58:13,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:13,993 INFO L514 BasicCegarLoop]: trace histogram [36, 32, 32, 32, 32, 32, 32, 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] [2021-11-25 18:58:13,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:58:13,993 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:58:13,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:13,994 INFO L85 PathProgramCache]: Analyzing trace with hash 459345170, now seen corresponding path program 1 times [2021-11-25 18:58:13,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:13,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568335023] [2021-11-25 18:58:13,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:13,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:15,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4272 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4270 trivial. 0 not checked. [2021-11-25 18:58:15,064 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:15,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568335023] [2021-11-25 18:58:15,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568335023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:15,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:15,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:58:15,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298731077] [2021-11-25 18:58:15,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:15,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:58:15,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:15,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:58:15,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:58:15,066 INFO L87 Difference]: Start difference. First operand 46411 states and 65641 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, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-25 18:58:17,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:19,629 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:58:21,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:25,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:26,419 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:29,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:34,755 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:39,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:40,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:40,744 INFO L93 Difference]: Finished difference Result 46489 states and 65721 transitions. [2021-11-25 18:58:40,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:58:40,746 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, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 418 [2021-11-25 18:58:40,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:40,933 INFO L225 Difference]: With dead ends: 46489 [2021-11-25 18:58:40,934 INFO L226 Difference]: Without dead ends: 46487 [2021-11-25 18:58:40,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:58:40,953 INFO L933 BasicCegarLoop]: 3633 mSDtfsCounter, 3133 mSDsluCounter, 11652 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3140 SdHoareTripleChecker+Valid, 13608 SdHoareTripleChecker+Invalid, 2274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:40,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3140 Valid, 13608 Invalid, 2274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2269 Invalid, 3 Unknown, 0 Unchecked, 24.8s Time] [2021-11-25 18:58:40,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46487 states. [2021-11-25 18:58:42,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46487 to 46463. [2021-11-25 18:58:42,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46463 states, 29851 states have (on average 1.344343573079629) internal successors, (40130), 30375 states have internal predecessors, (40130), 12783 states have call successors, (12783), 3840 states have call predecessors, (12783), 3826 states have return successors, (12779), 12463 states have call predecessors, (12779), 12775 states have call successors, (12779) [2021-11-25 18:58:42,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46463 states to 46463 states and 65692 transitions. [2021-11-25 18:58:42,947 INFO L78 Accepts]: Start accepts. Automaton has 46463 states and 65692 transitions. Word has length 418 [2021-11-25 18:58:42,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:42,948 INFO L470 AbstractCegarLoop]: Abstraction has 46463 states and 65692 transitions. [2021-11-25 18:58:42,949 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, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-25 18:58:42,949 INFO L276 IsEmpty]: Start isEmpty. Operand 46463 states and 65692 transitions. [2021-11-25 18:58:42,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2021-11-25 18:58:42,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:42,961 INFO L514 BasicCegarLoop]: trace histogram [36, 32, 32, 32, 32, 32, 32, 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] [2021-11-25 18:58:42,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:58:42,961 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:58:42,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:42,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1562986236, now seen corresponding path program 1 times [2021-11-25 18:58:42,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:42,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402230871] [2021-11-25 18:58:42,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:42,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:44,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4279 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4275 trivial. 0 not checked. [2021-11-25 18:58:44,116 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:44,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402230871] [2021-11-25 18:58:44,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402230871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:44,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:44,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:58:44,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18272490] [2021-11-25 18:58:44,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:44,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:58:44,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:44,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:58:44,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:58:44,119 INFO L87 Difference]: Start difference. First operand 46463 states and 65692 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, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-25 18:58:46,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:51,391 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:58:54,754 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:57,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:59:06,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:06,376 INFO L93 Difference]: Finished difference Result 69319 states and 98062 transitions. [2021-11-25 18:59:06,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:59:06,377 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, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 424 [2021-11-25 18:59:06,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:06,726 INFO L225 Difference]: With dead ends: 69319 [2021-11-25 18:59:06,726 INFO L226 Difference]: Without dead ends: 69317 [2021-11-25 18:59:06,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:59:06,753 INFO L933 BasicCegarLoop]: 3640 mSDtfsCounter, 3108 mSDsluCounter, 11659 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3116 SdHoareTripleChecker+Valid, 13623 SdHoareTripleChecker+Invalid, 2277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:06,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3116 Valid, 13623 Invalid, 2277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2271 Invalid, 3 Unknown, 0 Unchecked, 20.8s Time] [2021-11-25 18:59:06,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69317 states. [2021-11-25 18:59:09,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69317 to 69285. [2021-11-25 18:59:09,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69285 states, 44538 states have (on average 1.344671965512596) internal successors, (59889), 45328 states have internal predecessors, (59889), 19005 states have call successors, (19005), 5778 states have call predecessors, (19005), 5739 states have return successors, (19134), 18490 states have call predecessors, (19134), 18993 states have call successors, (19134) [2021-11-25 18:59:09,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69285 states to 69285 states and 98028 transitions. [2021-11-25 18:59:09,786 INFO L78 Accepts]: Start accepts. Automaton has 69285 states and 98028 transitions. Word has length 424 [2021-11-25 18:59:09,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:09,787 INFO L470 AbstractCegarLoop]: Abstraction has 69285 states and 98028 transitions. [2021-11-25 18:59:09,788 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, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-25 18:59:09,788 INFO L276 IsEmpty]: Start isEmpty. Operand 69285 states and 98028 transitions. [2021-11-25 18:59:09,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2021-11-25 18:59:09,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:09,801 INFO L514 BasicCegarLoop]: trace histogram [36, 32, 32, 32, 32, 32, 32, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:59:09,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:59:09,801 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:59:09,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:09,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1168793838, now seen corresponding path program 1 times [2021-11-25 18:59:09,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:09,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348696142] [2021-11-25 18:59:09,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:09,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:11,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4289 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4283 trivial. 0 not checked. [2021-11-25 18:59:11,158 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:11,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348696142] [2021-11-25 18:59:11,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348696142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:11,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:11,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:59:11,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955920848] [2021-11-25 18:59:11,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:11,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:59:11,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:11,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:59:11,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:59:11,162 INFO L87 Difference]: Start difference. First operand 69285 states and 98028 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, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-25 18:59:13,337 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:59:22,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:59:27,421 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:59:34,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:59:35,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:35,204 INFO L93 Difference]: Finished difference Result 69315 states and 98060 transitions. [2021-11-25 18:59:35,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:59:35,205 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, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 429 [2021-11-25 18:59:35,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:35,442 INFO L225 Difference]: With dead ends: 69315 [2021-11-25 18:59:35,442 INFO L226 Difference]: Without dead ends: 69313 [2021-11-25 18:59:35,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:59:35,466 INFO L933 BasicCegarLoop]: 3633 mSDtfsCounter, 3132 mSDsluCounter, 11650 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3139 SdHoareTripleChecker+Valid, 13608 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:35,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3139 Valid, 13608 Invalid, 2272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2266 Invalid, 4 Unknown, 0 Unchecked, 22.5s Time] [2021-11-25 18:59:35,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69313 states. [2021-11-25 18:59:37,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69313 to 69289. [2021-11-25 18:59:37,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69289 states, 44541 states have (on average 1.3446487505893447) internal successors, (59892), 45331 states have internal predecessors, (59892), 19005 states have call successors, (19005), 5779 states have call predecessors, (19005), 5740 states have return successors, (19134), 18490 states have call predecessors, (19134), 18993 states have call successors, (19134) [2021-11-25 18:59:38,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69289 states to 69289 states and 98031 transitions. [2021-11-25 18:59:38,255 INFO L78 Accepts]: Start accepts. Automaton has 69289 states and 98031 transitions. Word has length 429 [2021-11-25 18:59:38,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:38,256 INFO L470 AbstractCegarLoop]: Abstraction has 69289 states and 98031 transitions. [2021-11-25 18:59:38,256 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, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-25 18:59:38,256 INFO L276 IsEmpty]: Start isEmpty. Operand 69289 states and 98031 transitions. [2021-11-25 18:59:38,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2021-11-25 18:59:38,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:38,292 INFO L514 BasicCegarLoop]: trace histogram [36, 32, 32, 32, 32, 32, 32, 5, 5, 5, 4, 4, 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] [2021-11-25 18:59:38,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:59:38,293 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:59:38,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:38,294 INFO L85 PathProgramCache]: Analyzing trace with hash -872233476, now seen corresponding path program 1 times [2021-11-25 18:59:38,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:38,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690026609] [2021-11-25 18:59:38,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:38,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:39,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4303 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4295 trivial. 0 not checked. [2021-11-25 18:59:39,318 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:39,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690026609] [2021-11-25 18:59:39,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690026609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:39,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:39,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:59:39,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818169658] [2021-11-25 18:59:39,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:39,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:59:39,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:39,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:59:39,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:59:39,321 INFO L87 Difference]: Start difference. First operand 69289 states and 98031 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, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-25 18:59:41,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:59:46,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:59:52,107 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:01,819 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:00:03,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:00:06,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:00:07,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:07,066 INFO L93 Difference]: Finished difference Result 69362 states and 98095 transitions. [2021-11-25 19:00:07,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:00:07,067 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, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 434 [2021-11-25 19:00:07,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:07,396 INFO L225 Difference]: With dead ends: 69362 [2021-11-25 19:00:07,396 INFO L226 Difference]: Without dead ends: 69360 [2021-11-25 19:00:07,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:00:07,421 INFO L933 BasicCegarLoop]: 3630 mSDtfsCounter, 3120 mSDsluCounter, 11643 mSDsCounter, 0 mSdLazyCounter, 2263 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3126 SdHoareTripleChecker+Valid, 13599 SdHoareTripleChecker+Invalid, 2271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2263 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:07,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3126 Valid, 13599 Invalid, 2271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2263 Invalid, 6 Unknown, 0 Unchecked, 26.4s Time] [2021-11-25 19:00:07,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69360 states. [2021-11-25 19:00:09,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69360 to 69342. [2021-11-25 19:00:09,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69342 states, 44579 states have (on average 1.344511989950425) internal successors, (59937), 45369 states have internal predecessors, (59937), 19005 states have call successors, (19005), 5794 states have call predecessors, (19005), 5755 states have return successors, (19134), 18490 states have call predecessors, (19134), 18993 states have call successors, (19134) [2021-11-25 19:00:09,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69342 states to 69342 states and 98076 transitions. [2021-11-25 19:00:09,820 INFO L78 Accepts]: Start accepts. Automaton has 69342 states and 98076 transitions. Word has length 434 [2021-11-25 19:00:09,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:09,821 INFO L470 AbstractCegarLoop]: Abstraction has 69342 states and 98076 transitions. [2021-11-25 19:00:09,821 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, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-25 19:00:09,821 INFO L276 IsEmpty]: Start isEmpty. Operand 69342 states and 98076 transitions. [2021-11-25 19:00:10,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-11-25 19:00:10,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:10,070 INFO L514 BasicCegarLoop]: trace histogram [36, 32, 32, 32, 32, 32, 32, 6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:10,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:00:10,070 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:00:10,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:10,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1019911150, now seen corresponding path program 1 times [2021-11-25 19:00:10,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:10,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821758242] [2021-11-25 19:00:10,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:10,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:10,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4320 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4310 trivial. 0 not checked. [2021-11-25 19:00:10,836 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:10,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821758242] [2021-11-25 19:00:10,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821758242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:10,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:10,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:00:10,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116373583] [2021-11-25 19:00:10,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:10,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:00:10,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:10,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:00:10,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:00:10,839 INFO L87 Difference]: Start difference. First operand 69342 states and 98076 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, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-25 19:00:13,279 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:22,115 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:27,987 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:00:32,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:32,579 INFO L93 Difference]: Finished difference Result 113986 states and 161594 transitions. [2021-11-25 19:00:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:00:32,580 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, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 438 [2021-11-25 19:00:32,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:33,097 INFO L225 Difference]: With dead ends: 113986 [2021-11-25 19:00:33,098 INFO L226 Difference]: Without dead ends: 113984 [2021-11-25 19:00:33,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:00:33,131 INFO L933 BasicCegarLoop]: 3621 mSDtfsCounter, 3084 mSDsluCounter, 11618 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3087 SdHoareTripleChecker+Valid, 13566 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:33,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3087 Valid, 13566 Invalid, 2272 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2267 Invalid, 2 Unknown, 0 Unchecked, 19.5s Time] [2021-11-25 19:00:33,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113984 states. [2021-11-25 19:00:36,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113984 to 113958. [2021-11-25 19:00:36,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113958 states, 73367 states have (on average 1.3462592173593033) internal successors, (98771), 74697 states have internal predecessors, (98771), 31257 states have call successors, (31257), 9444 states have call predecessors, (31257), 9331 states have return successors, (31539), 30332 states have call predecessors, (31539), 31237 states have call successors, (31539) [2021-11-25 19:00:37,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113958 states to 113958 states and 161567 transitions. [2021-11-25 19:00:37,381 INFO L78 Accepts]: Start accepts. Automaton has 113958 states and 161567 transitions. Word has length 438 [2021-11-25 19:00:37,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:37,382 INFO L470 AbstractCegarLoop]: Abstraction has 113958 states and 161567 transitions. [2021-11-25 19:00:37,382 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, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-25 19:00:37,383 INFO L276 IsEmpty]: Start isEmpty. Operand 113958 states and 161567 transitions. [2021-11-25 19:00:37,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2021-11-25 19:00:37,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:37,399 INFO L514 BasicCegarLoop]: trace histogram [37, 32, 32, 32, 32, 32, 32, 4, 4, 3, 3, 3, 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] [2021-11-25 19:00:37,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 19:00:37,399 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:00:37,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:37,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1423885935, now seen corresponding path program 1 times [2021-11-25 19:00:37,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:37,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703128348] [2021-11-25 19:00:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:37,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:38,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4348 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4341 trivial. 0 not checked. [2021-11-25 19:00:38,268 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:38,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703128348] [2021-11-25 19:00:38,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703128348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:38,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:38,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:00:38,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540947960] [2021-11-25 19:00:38,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:38,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:00:38,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:38,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:00:38,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:38,271 INFO L87 Difference]: Start difference. First operand 113958 states and 161567 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2021-11-25 19:00:40,440 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:46,053 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:00:52,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:00,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:00,735 INFO L93 Difference]: Finished difference Result 264418 states and 375045 transitions. [2021-11-25 19:01:00,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:01:00,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 436 [2021-11-25 19:01:00,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:01,308 INFO L225 Difference]: With dead ends: 264418 [2021-11-25 19:01:01,308 INFO L226 Difference]: Without dead ends: 150963 [2021-11-25 19:01:01,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:01:01,539 INFO L933 BasicCegarLoop]: 5353 mSDtfsCounter, 3035 mSDsluCounter, 3309 mSDsCounter, 0 mSdLazyCounter, 1563 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3036 SdHoareTripleChecker+Valid, 8147 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1563 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:01,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3036 Valid, 8147 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1563 Invalid, 3 Unknown, 0 Unchecked, 17.9s Time] [2021-11-25 19:01:01,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150963 states. [2021-11-25 19:01:06,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150963 to 150777. [2021-11-25 19:01:06,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150777 states, 97214 states have (on average 1.347316230172609) internal successors, (130978), 98990 states have internal predecessors, (130978), 41257 states have call successors, (41257), 12442 states have call predecessors, (41257), 12303 states have return successors, (41639), 40032 states have call predecessors, (41639), 41237 states have call successors, (41639) [2021-11-25 19:01:07,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150777 states to 150777 states and 213874 transitions. [2021-11-25 19:01:07,568 INFO L78 Accepts]: Start accepts. Automaton has 150777 states and 213874 transitions. Word has length 436 [2021-11-25 19:01:07,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:07,569 INFO L470 AbstractCegarLoop]: Abstraction has 150777 states and 213874 transitions. [2021-11-25 19:01:07,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2021-11-25 19:01:07,570 INFO L276 IsEmpty]: Start isEmpty. Operand 150777 states and 213874 transitions. [2021-11-25 19:01:07,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2021-11-25 19:01:07,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:07,589 INFO L514 BasicCegarLoop]: trace histogram [36, 32, 32, 32, 32, 32, 32, 7, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:07,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 19:01:07,589 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:01:07,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:07,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1770670296, now seen corresponding path program 1 times [2021-11-25 19:01:07,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:01:07,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800343190] [2021-11-25 19:01:07,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:07,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:01:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:08,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4342 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4330 trivial. 0 not checked. [2021-11-25 19:01:08,768 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:01:08,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800343190] [2021-11-25 19:01:08,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800343190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:08,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:08,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:01:08,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452965182] [2021-11-25 19:01:08,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:08,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:01:08,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:01:08,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:01:08,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:01:08,770 INFO L87 Difference]: Start difference. First operand 150777 states and 213874 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, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-25 19:01:11,018 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:19,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:26,246 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:01:32,345 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:34,913 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:01:37,078 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:01:39,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:01:41,485 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 19:01:42,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:42,749 INFO L93 Difference]: Finished difference Result 150789 states and 213882 transitions. [2021-11-25 19:01:42,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:01:42,750 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, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 443 [2021-11-25 19:01:42,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:43,256 INFO L225 Difference]: With dead ends: 150789 [2021-11-25 19:01:43,256 INFO L226 Difference]: Without dead ends: 150787 [2021-11-25 19:01:43,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:01:43,514 INFO L933 BasicCegarLoop]: 3633 mSDtfsCounter, 3133 mSDsluCounter, 11653 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3135 SdHoareTripleChecker+Valid, 13608 SdHoareTripleChecker+Invalid, 2275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:43,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3135 Valid, 13608 Invalid, 2275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2266 Invalid, 7 Unknown, 0 Unchecked, 30.6s Time] [2021-11-25 19:01:43,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150787 states. [2021-11-25 19:01:48,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150787 to 150781. [2021-11-25 19:01:48,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150781 states, 97217 states have (on average 1.347305512410381) internal successors, (130981), 98993 states have internal predecessors, (130981), 41257 states have call successors, (41257), 12443 states have call predecessors, (41257), 12304 states have return successors, (41639), 40032 states have call predecessors, (41639), 41237 states have call successors, (41639) [2021-11-25 19:01:49,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150781 states to 150781 states and 213877 transitions. [2021-11-25 19:01:49,706 INFO L78 Accepts]: Start accepts. Automaton has 150781 states and 213877 transitions. Word has length 443 [2021-11-25 19:01:49,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:49,707 INFO L470 AbstractCegarLoop]: Abstraction has 150781 states and 213877 transitions. [2021-11-25 19:01:49,707 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, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-25 19:01:49,707 INFO L276 IsEmpty]: Start isEmpty. Operand 150781 states and 213877 transitions. [2021-11-25 19:01:49,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2021-11-25 19:01:49,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:49,726 INFO L514 BasicCegarLoop]: trace histogram [36, 32, 32, 32, 32, 32, 32, 8, 7, 7, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:49,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 19:01:49,726 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:01:49,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:49,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1083281902, now seen corresponding path program 1 times [2021-11-25 19:01:49,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:01:49,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467454189] [2021-11-25 19:01:49,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:49,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:01:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:50,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4369 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4355 trivial. 0 not checked. [2021-11-25 19:01:50,460 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:01:50,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467454189] [2021-11-25 19:01:50,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467454189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:50,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:50,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:01:50,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299959494] [2021-11-25 19:01:50,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:50,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:01:50,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:01:50,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:01:50,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:01:50,462 INFO L87 Difference]: Start difference. First operand 150781 states and 213877 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, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-25 19:01:52,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:54,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:00,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:03,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:08,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:10,533 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []