./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4dc730f52c640d2c8e3cb7b93e5d1f8c1973029db6cd19ab3f75108e9e7f0634 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 04:09:04,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:09:04,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:09:04,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:09:04,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:09:04,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:09:04,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:09:04,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:09:04,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:09:04,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:09:04,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:09:04,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:09:04,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:09:04,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:09:04,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:09:04,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:09:04,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:09:04,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:09:04,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:09:04,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:09:04,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:09:04,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:09:04,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:09:04,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:09:04,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:09:04,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:09:04,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:09:04,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:09:04,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:09:04,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:09:04,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:09:04,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:09:04,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:09:04,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:09:04,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:09:04,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:09:04,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:09:04,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:09:04,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:09:04,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:09:04,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:09:04,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 04:09:04,660 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:09:04,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:09:04,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:09:04,663 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:09:04,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:09:04,664 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:09:04,664 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:09:04,665 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:09:04,665 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:09:04,665 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:09:04,666 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:09:04,667 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:09:04,667 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:09:04,667 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:09:04,667 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:09:04,668 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:09:04,668 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:09:04,678 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:09:04,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:09:04,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:09:04,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:09:04,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:09:04,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:09:04,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:09:04,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:09:04,681 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:09:04,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:09:04,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:09:04,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:09:04,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:09:04,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:09:04,683 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:09:04,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:09:04,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:09:04,684 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:09:04,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:09:04,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:09:04,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:09:04,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4dc730f52c640d2c8e3cb7b93e5d1f8c1973029db6cd19ab3f75108e9e7f0634 [2022-11-03 04:09:04,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:09:05,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:09:05,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:09:05,011 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:09:05,012 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:09:05,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i [2022-11-03 04:09:05,081 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/bin/utaipan-7li7fVZpFI/data/c3255a280/bdbd18d184f24d90932054d2c511f0d4/FLAG3881a8eaf [2022-11-03 04:09:06,078 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:09:06,079 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i [2022-11-03 04:09:06,173 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/bin/utaipan-7li7fVZpFI/data/c3255a280/bdbd18d184f24d90932054d2c511f0d4/FLAG3881a8eaf [2022-11-03 04:09:06,420 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/bin/utaipan-7li7fVZpFI/data/c3255a280/bdbd18d184f24d90932054d2c511f0d4 [2022-11-03 04:09:06,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:09:06,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:09:06,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:09:06,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:09:06,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:09:06,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:06" (1/1) ... [2022-11-03 04:09:06,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fd16333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:06, skipping insertion in model container [2022-11-03 04:09:06,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:06" (1/1) ... [2022-11-03 04:09:06,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:09:06,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:09:10,866 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_3f76508b-aa06-4a07-ae75-2f2774320491/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[570903,570916] [2022-11-03 04:09:10,870 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_3f76508b-aa06-4a07-ae75-2f2774320491/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[571069,571082] [2022-11-03 04:09:10,871 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_3f76508b-aa06-4a07-ae75-2f2774320491/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[571233,571246] [2022-11-03 04:09:10,871 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_3f76508b-aa06-4a07-ae75-2f2774320491/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[571398,571411] [2022-11-03 04:09:10,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:09:11,022 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:09:11,879 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_3f76508b-aa06-4a07-ae75-2f2774320491/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[570903,570916] [2022-11-03 04:09:11,880 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_3f76508b-aa06-4a07-ae75-2f2774320491/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[571069,571082] [2022-11-03 04:09:11,881 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_3f76508b-aa06-4a07-ae75-2f2774320491/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[571233,571246] [2022-11-03 04:09:11,881 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_3f76508b-aa06-4a07-ae75-2f2774320491/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[571398,571411] [2022-11-03 04:09:11,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:09:12,085 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:09:12,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:12 WrapperNode [2022-11-03 04:09:12,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:09:12,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:09:12,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:09:12,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:09:12,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:12" (1/1) ... [2022-11-03 04:09:12,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:12" (1/1) ... [2022-11-03 04:09:12,562 INFO L138 Inliner]: procedures = 489, calls = 4094, calls flagged for inlining = 273, calls inlined = 262, statements flattened = 8614 [2022-11-03 04:09:12,563 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:09:12,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:09:12,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:09:12,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:09:12,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:12" (1/1) ... [2022-11-03 04:09:12,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:12" (1/1) ... [2022-11-03 04:09:12,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:12" (1/1) ... [2022-11-03 04:09:12,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:12" (1/1) ... [2022-11-03 04:09:12,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:12" (1/1) ... [2022-11-03 04:09:12,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:12" (1/1) ... [2022-11-03 04:09:12,943 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:12" (1/1) ... [2022-11-03 04:09:12,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:12" (1/1) ... [2022-11-03 04:09:13,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:09:13,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:09:13,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:09:13,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:09:13,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:12" (1/1) ... [2022-11-03 04:09:13,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:09:13,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:09:13,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:09:13,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:09:13,112 INFO L130 BoogieDeclarations]: Found specification of procedure video_open [2022-11-03 04:09:13,112 INFO L138 BoogieDeclarations]: Found implementation of procedure video_open [2022-11-03 04:09:13,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 04:09:13,113 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 04:09:13,113 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamon [2022-11-03 04:09:13,113 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamon [2022-11-03 04:09:13,113 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_unregister_video [2022-11-03 04:09:13,113 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_unregister_video [2022-11-03 04:09:13,114 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_fmt_vid_cap [2022-11-03 04:09:13,114 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_fmt_vid_cap [2022-11-03 04:09:13,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 04:09:13,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 04:09:13,114 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_input [2022-11-03 04:09:13,114 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_input [2022-11-03 04:09:13,115 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_reqbufs [2022-11-03 04:09:13,115 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_reqbufs [2022-11-03 04:09:13,115 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_enum_fmt_vid_cap [2022-11-03 04:09:13,115 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_enum_fmt_vid_cap [2022-11-03 04:09:13,115 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 04:09:13,115 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 04:09:13,115 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_tvnorm [2022-11-03 04:09:13,116 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_tvnorm [2022-11-03 04:09:13,116 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_tvaudio [2022-11-03 04:09:13,116 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_tvaudio [2022-11-03 04:09:13,116 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_s_vid_ctrl [2022-11-03 04:09:13,116 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_s_vid_ctrl [2022-11-03 04:09:13,116 INFO L130 BoogieDeclarations]: Found specification of procedure res_free [2022-11-03 04:09:13,117 INFO L138 BoogieDeclarations]: Found implementation of procedure res_free [2022-11-03 04:09:13,117 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 04:09:13,117 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 04:09:13,117 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_to_dma [2022-11-03 04:09:13,117 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_to_dma [2022-11-03 04:09:13,117 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_shutdown [2022-11-03 04:09:13,118 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_shutdown [2022-11-03 04:09:13,118 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 04:09:13,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 04:09:13,118 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fmt_vid_cap [2022-11-03 04:09:13,118 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fmt_vid_cap [2022-11-03 04:09:13,118 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 04:09:13,119 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 04:09:13,119 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_newstation [2022-11-03 04:09:13,119 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_newstation [2022-11-03 04:09:13,119 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_std [2022-11-03 04:09:13,119 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_std [2022-11-03 04:09:13,119 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_vdev_init [2022-11-03 04:09:13,120 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_vdev_init [2022-11-03 04:09:13,260 INFO L130 BoogieDeclarations]: Found specification of procedure video_mmap [2022-11-03 04:09:13,260 INFO L138 BoogieDeclarations]: Found implementation of procedure video_mmap [2022-11-03 04:09:13,260 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 04:09:13,260 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 04:09:13,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 04:09:13,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 04:09:13,260 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 04:09:13,261 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 04:09:13,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer [2022-11-03 04:09:13,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer [2022-11-03 04:09:13,261 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2022-11-03 04:09:13,261 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2022-11-03 04:09:13,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 04:09:13,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 04:09:13,261 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_poll [2022-11-03 04:09:13,261 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_poll [2022-11-03 04:09:13,261 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_frequency [2022-11-03 04:09:13,262 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_frequency [2022-11-03 04:09:13,262 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querybuf [2022-11-03 04:09:13,262 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querybuf [2022-11-03 04:09:13,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-03 04:09:13,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-03 04:09:13,262 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 04:09:13,262 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 04:09:13,262 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_register [2022-11-03 04:09:13,262 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_register [2022-11-03 04:09:13,262 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2022-11-03 04:09:13,262 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2022-11-03 04:09:13,263 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_setup [2022-11-03 04:09:13,263 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_setup [2022-11-03 04:09:13,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:09:13,263 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_stereo [2022-11-03 04:09:13,263 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_stereo [2022-11-03 04:09:13,263 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_vbi_fmt [2022-11-03 04:09:13,263 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_vbi_fmt [2022-11-03 04:09:13,263 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 04:09:13,263 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 04:09:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_audio_thread [2022-11-03 04:09:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 04:09:13,264 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 04:09:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_cap [2022-11-03 04:09:13,264 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_cap [2022-11-03 04:09:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2022-11-03 04:09:13,264 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2022-11-03 04:09:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 04:09:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2022-11-03 04:09:13,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2022-11-03 04:09:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 04:09:13,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 04:09:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_restart_vbi_queue [2022-11-03 04:09:13,265 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_restart_vbi_queue [2022-11-03 04:09:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_vb_lock_of_videobuf_queue [2022-11-03 04:09:13,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_vb_lock_of_videobuf_queue [2022-11-03 04:09:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 04:09:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_finidev [2022-11-03 04:09:13,265 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_finidev [2022-11-03 04:09:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 04:09:13,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 04:09:13,266 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2022-11-03 04:09:13,266 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2022-11-03 04:09:13,266 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_querycap [2022-11-03 04:09:13,266 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_querycap [2022-11-03 04:09:13,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 04:09:13,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 04:09:13,266 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_freq [2022-11-03 04:09:13,266 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_freq [2022-11-03 04:09:13,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 04:09:13,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 04:09:13,267 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_s_aud_ctrl [2022-11-03 04:09:13,267 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_s_aud_ctrl [2022-11-03 04:09:13,267 INFO L130 BoogieDeclarations]: Found specification of procedure video_read [2022-11-03 04:09:13,267 INFO L138 BoogieDeclarations]: Found implementation of procedure video_read [2022-11-03 04:09:13,267 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-03 04:09:13,267 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-03 04:09:13,267 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_video_mux [2022-11-03 04:09:13,267 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_video_mux [2022-11-03 04:09:13,268 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 04:09:13,268 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 04:09:13,268 INFO L130 BoogieDeclarations]: Found specification of procedure video_is_registered [2022-11-03 04:09:13,268 INFO L138 BoogieDeclarations]: Found implementation of procedure video_is_registered [2022-11-03 04:09:13,268 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2022-11-03 04:09:13,268 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_subscribe_event [2022-11-03 04:09:13,268 INFO L130 BoogieDeclarations]: Found specification of procedure video_unregister_device [2022-11-03 04:09:13,268 INFO L138 BoogieDeclarations]: Found implementation of procedure video_unregister_device [2022-11-03 04:09:13,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 04:09:13,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 04:09:13,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 04:09:13,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 04:09:13,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 04:09:13,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-03 04:09:13,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-03 04:09:13,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-03 04:09:13,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-03 04:09:13,271 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_queue_sg_init [2022-11-03 04:09:13,271 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_queue_sg_init [2022-11-03 04:09:13,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:09:13,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 04:09:13,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 04:09:13,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 04:09:13,272 INFO L130 BoogieDeclarations]: Found specification of procedure video_release [2022-11-03 04:09:13,272 INFO L138 BoogieDeclarations]: Found implementation of procedure video_release [2022-11-03 04:09:13,272 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 04:09:13,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 04:09:13,272 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 04:09:13,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 04:09:13,273 INFO L130 BoogieDeclarations]: Found specification of procedure restart_video_queue [2022-11-03 04:09:13,273 INFO L138 BoogieDeclarations]: Found implementation of procedure restart_video_queue [2022-11-03 04:09:13,273 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_qbuf [2022-11-03 04:09:13,273 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_qbuf [2022-11-03 04:09:13,273 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_wakeup [2022-11-03 04:09:13,273 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_wakeup [2022-11-03 04:09:13,273 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 04:09:13,274 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 04:09:13,274 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_s_ctrl [2022-11-03 04:09:13,274 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_s_ctrl [2022-11-03 04:09:13,274 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_iolock [2022-11-03 04:09:13,274 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_iolock [2022-11-03 04:09:13,274 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_enum_input [2022-11-03 04:09:13,274 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_enum_input [2022-11-03 04:09:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_sram_channel_dump [2022-11-03 04:09:13,275 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_sram_channel_dump [2022-11-03 04:09:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure video_set_drvdata [2022-11-03 04:09:13,275 INFO L138 BoogieDeclarations]: Found implementation of procedure video_set_drvdata [2022-11-03 04:09:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_tuner [2022-11-03 04:09:13,275 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_tuner [2022-11-03 04:09:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure res_check [2022-11-03 04:09:13,276 INFO L138 BoogieDeclarations]: Found implementation of procedure res_check [2022-11-03 04:09:13,276 INFO L130 BoogieDeclarations]: Found specification of procedure format_by_fourcc [2022-11-03 04:09:13,276 INFO L138 BoogieDeclarations]: Found implementation of procedure format_by_fourcc [2022-11-03 04:09:13,276 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_risc_buffer [2022-11-03 04:09:13,276 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_risc_buffer [2022-11-03 04:09:13,276 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-03 04:09:13,277 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-03 04:09:13,277 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 04:09:13,277 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 04:09:13,277 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2022-11-03 04:09:13,277 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_event_unsubscribe [2022-11-03 04:09:13,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:09:13,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:09:13,278 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_risc_stopper [2022-11-03 04:09:13,278 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_risc_stopper [2022-11-03 04:09:13,278 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 04:09:13,278 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 04:09:13,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-03 04:09:13,278 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-03 04:09:13,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 04:09:13,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 04:09:13,279 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_std [2022-11-03 04:09:13,279 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_std [2022-11-03 04:09:13,279 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamoff [2022-11-03 04:09:13,279 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamoff [2022-11-03 04:09:13,279 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_sram_channel_setup [2022-11-03 04:09:13,279 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_sram_channel_setup [2022-11-03 04:09:13,280 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_free_buffer [2022-11-03 04:09:13,280 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_free_buffer [2022-11-03 04:09:13,280 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2022-11-03 04:09:13,280 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2022-11-03 04:09:13,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 04:09:13,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 04:09:13,280 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_enum_input [2022-11-03 04:09:13,281 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_enum_input [2022-11-03 04:09:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure res_get [2022-11-03 04:09:13,281 INFO L138 BoogieDeclarations]: Found implementation of procedure res_get [2022-11-03 04:09:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_mmap_free [2022-11-03 04:09:13,281 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_mmap_free [2022-11-03 04:09:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_resume [2022-11-03 04:09:13,281 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_resume [2022-11-03 04:09:13,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_cx8800_pci_driver_exit_15_2 [2022-11-03 04:09:13,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_cx8800_pci_driver_exit_15_2 [2022-11-03 04:09:13,282 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_frequency [2022-11-03 04:09:13,282 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_frequency [2022-11-03 04:09:13,282 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-03 04:09:13,282 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-03 04:09:13,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2022-11-03 04:09:13,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2022-11-03 04:09:13,283 INFO L130 BoogieDeclarations]: Found specification of procedure video_poll [2022-11-03 04:09:13,283 INFO L138 BoogieDeclarations]: Found implementation of procedure video_poll [2022-11-03 04:09:13,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 04:09:13,283 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 04:09:13,283 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 04:09:13,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 04:09:13,284 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_core_put [2022-11-03 04:09:13,284 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_core_put [2022-11-03 04:09:13,284 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_find [2022-11-03 04:09:13,284 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_find [2022-11-03 04:09:13,284 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_release [2022-11-03 04:09:13,284 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_release [2022-11-03 04:09:13,284 INFO L130 BoogieDeclarations]: Found specification of procedure start_video_dma [2022-11-03 04:09:13,285 INFO L138 BoogieDeclarations]: Found implementation of procedure start_video_dma [2022-11-03 04:09:13,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 04:09:13,285 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_node_name [2022-11-03 04:09:13,285 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_node_name [2022-11-03 04:09:13,285 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 04:09:13,285 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 04:09:13,286 INFO L130 BoogieDeclarations]: Found specification of procedure get_queue [2022-11-03 04:09:13,286 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queue [2022-11-03 04:09:13,286 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 04:09:13,286 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 04:09:13,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 04:09:13,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 04:09:13,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-03 04:09:13,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-03 04:09:13,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 04:09:13,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 04:09:13,287 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_dqbuf [2022-11-03 04:09:13,287 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_dqbuf [2022-11-03 04:09:13,287 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 04:09:13,288 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 04:09:13,288 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querycap [2022-11-03 04:09:13,288 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querycap [2022-11-03 04:09:13,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-03 04:09:13,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-03 04:09:13,288 INFO L130 BoogieDeclarations]: Found specification of procedure video_register_device [2022-11-03 04:09:13,288 INFO L138 BoogieDeclarations]: Found implementation of procedure video_register_device [2022-11-03 04:09:13,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_cx88_core [2022-11-03 04:09:13,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_cx88_core [2022-11-03 04:09:13,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_cx88_core [2022-11-03 04:09:13,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_cx88_core [2022-11-03 04:09:13,289 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 04:09:13,289 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 04:09:13,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-03 04:09:13,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-03 04:09:13,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:09:13,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 04:09:13,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 04:09:13,290 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_input [2022-11-03 04:09:13,290 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_input [2022-11-03 04:09:13,291 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-03 04:09:13,291 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-03 04:09:13,291 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_tuner [2022-11-03 04:09:13,291 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_tuner [2022-11-03 04:09:13,291 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 04:09:13,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 04:09:13,291 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_start_vbi_dma [2022-11-03 04:09:13,291 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_start_vbi_dma [2022-11-03 04:09:13,292 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_ir_stop [2022-11-03 04:09:13,292 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_ir_stop [2022-11-03 04:09:13,292 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_register [2022-11-03 04:09:13,292 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_register [2022-11-03 04:09:13,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 04:09:13,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 04:09:13,292 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-03 04:09:13,293 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-03 04:09:13,293 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-03 04:09:13,293 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-03 04:09:13,293 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxw [2022-11-03 04:09:13,293 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxw [2022-11-03 04:09:13,293 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 04:09:13,293 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 04:09:13,294 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxh [2022-11-03 04:09:13,294 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxh [2022-11-03 04:09:13,294 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 04:09:13,294 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 04:09:13,294 INFO L130 BoogieDeclarations]: Found specification of procedure get_resource [2022-11-03 04:09:13,294 INFO L138 BoogieDeclarations]: Found implementation of procedure get_resource [2022-11-03 04:09:13,294 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 04:09:13,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 04:09:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 04:09:13,295 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 04:09:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_initdev [2022-11-03 04:09:13,295 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_initdev [2022-11-03 04:09:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:09:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 04:09:13,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 04:09:14,626 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:09:14,631 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:09:15,054 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 04:09:43,577 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 04:09:43,807 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:09:45,651 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:09:45,652 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-03 04:09:45,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:45 BoogieIcfgContainer [2022-11-03 04:09:45,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:09:45,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:09:45,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:09:45,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:09:45,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:09:06" (1/3) ... [2022-11-03 04:09:45,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b6d813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:45, skipping insertion in model container [2022-11-03 04:09:45,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:12" (2/3) ... [2022-11-03 04:09:45,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b6d813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:45, skipping insertion in model container [2022-11-03 04:09:45,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:45" (3/3) ... [2022-11-03 04:09:45,673 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i [2022-11-03 04:09:45,693 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:09:45,693 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 04:09:45,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:09:45,814 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3b9765fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:09:45,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 04:09:45,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 2246 states, 1337 states have (on average 1.2976813762154076) internal successors, (1735), 1352 states have internal predecessors, (1735), 759 states have call successors, (759), 148 states have call predecessors, (759), 147 states have return successors, (752), 751 states have call predecessors, (752), 752 states have call successors, (752) [2022-11-03 04:09:45,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2022-11-03 04:09:45,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:45,884 INFO L195 NwaCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:09:45,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:09:45,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:45,891 INFO L85 PathProgramCache]: Analyzing trace with hash -698914030, now seen corresponding path program 1 times [2022-11-03 04:09:45,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:45,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123646792] [2022-11-03 04:09:45,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:45,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:47,728 INFO L134 CoverageAnalysis]: Checked inductivity of 9509 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9509 trivial. 0 not checked. [2022-11-03 04:09:47,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:09:47,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123646792] [2022-11-03 04:09:47,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123646792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:47,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:09:47,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:09:47,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049166571] [2022-11-03 04:09:47,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:47,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:09:47,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:09:47,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:09:47,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:09:47,789 INFO L87 Difference]: Start difference. First operand has 2246 states, 1337 states have (on average 1.2976813762154076) internal successors, (1735), 1352 states have internal predecessors, (1735), 759 states have call successors, (759), 148 states have call predecessors, (759), 147 states have return successors, (752), 751 states have call predecessors, (752), 752 states have call successors, (752) Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-03 04:09:51,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:09:54,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:54,651 INFO L93 Difference]: Finished difference Result 6458 states and 9486 transitions. [2022-11-03 04:09:54,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:09:54,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 515 [2022-11-03 04:09:54,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:54,700 INFO L225 Difference]: With dead ends: 6458 [2022-11-03 04:09:54,700 INFO L226 Difference]: Without dead ends: 4300 [2022-11-03 04:09:54,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:09:54,724 INFO L413 NwaCegarLoop]: 3441 mSDtfsCounter, 2997 mSDsluCounter, 3176 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2997 SdHoareTripleChecker+Valid, 6167 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:54,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2997 Valid, 6167 Invalid, 974 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 958 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-03 04:09:54,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4300 states. [2022-11-03 04:09:55,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4300 to 4295. [2022-11-03 04:09:55,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4295 states, 2579 states have (on average 1.2935246219464909) internal successors, (3336), 2609 states have internal predecessors, (3336), 1423 states have call successors, (1423), 291 states have call predecessors, (1423), 290 states have return successors, (1419), 1416 states have call predecessors, (1419), 1419 states have call successors, (1419) [2022-11-03 04:09:55,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 6178 transitions. [2022-11-03 04:09:55,108 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 6178 transitions. Word has length 515 [2022-11-03 04:09:55,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:55,112 INFO L495 AbstractCegarLoop]: Abstraction has 4295 states and 6178 transitions. [2022-11-03 04:09:55,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-03 04:09:55,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 6178 transitions. [2022-11-03 04:09:55,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2022-11-03 04:09:55,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:55,135 INFO L195 NwaCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:09:55,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:09:55,136 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:09:55,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:55,137 INFO L85 PathProgramCache]: Analyzing trace with hash -135381459, now seen corresponding path program 1 times [2022-11-03 04:09:55,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:55,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926501857] [2022-11-03 04:09:55,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:55,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:56,349 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2022-11-03 04:09:56,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:09:56,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926501857] [2022-11-03 04:09:56,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926501857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:56,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:09:56,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:09:56,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626143041] [2022-11-03 04:09:56,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:56,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:09:56,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:09:56,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:09:56,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:09:56,361 INFO L87 Difference]: Start difference. First operand 4295 states and 6178 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-03 04:09:58,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:10:04,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:04,568 INFO L93 Difference]: Finished difference Result 10304 states and 14743 transitions. [2022-11-03 04:10:04,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:10:04,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 526 [2022-11-03 04:10:04,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:04,613 INFO L225 Difference]: With dead ends: 10304 [2022-11-03 04:10:04,614 INFO L226 Difference]: Without dead ends: 6108 [2022-11-03 04:10:04,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:10:04,635 INFO L413 NwaCegarLoop]: 3381 mSDtfsCounter, 2759 mSDsluCounter, 3089 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2761 SdHoareTripleChecker+Valid, 6073 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:04,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2761 Valid, 6073 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 995 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-11-03 04:10:04,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6108 states. [2022-11-03 04:10:04,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6108 to 6083. [2022-11-03 04:10:04,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6083 states, 3675 states have (on average 1.2889795918367346) internal successors, (4737), 3724 states have internal predecessors, (4737), 1965 states have call successors, (1965), 441 states have call predecessors, (1965), 440 states have return successors, (1963), 1950 states have call predecessors, (1963), 1961 states have call successors, (1963) [2022-11-03 04:10:04,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6083 states to 6083 states and 8665 transitions. [2022-11-03 04:10:04,994 INFO L78 Accepts]: Start accepts. Automaton has 6083 states and 8665 transitions. Word has length 526 [2022-11-03 04:10:04,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:04,996 INFO L495 AbstractCegarLoop]: Abstraction has 6083 states and 8665 transitions. [2022-11-03 04:10:04,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-03 04:10:04,997 INFO L276 IsEmpty]: Start isEmpty. Operand 6083 states and 8665 transitions. [2022-11-03 04:10:05,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2022-11-03 04:10:05,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:05,013 INFO L195 NwaCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:10:05,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:10:05,014 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:10:05,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:05,023 INFO L85 PathProgramCache]: Analyzing trace with hash 929342936, now seen corresponding path program 1 times [2022-11-03 04:10:05,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:05,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816832461] [2022-11-03 04:10:05,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:05,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:06,044 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2022-11-03 04:10:06,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:06,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816832461] [2022-11-03 04:10:06,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816832461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:06,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:06,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:10:06,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838004811] [2022-11-03 04:10:06,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:06,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:10:06,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:10:06,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:10:06,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:10:06,047 INFO L87 Difference]: Start difference. First operand 6083 states and 8665 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-03 04:10:12,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:10:13,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:13,321 INFO L93 Difference]: Finished difference Result 14873 states and 21140 transitions. [2022-11-03 04:10:13,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:10:13,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 525 [2022-11-03 04:10:13,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:13,381 INFO L225 Difference]: With dead ends: 14873 [2022-11-03 04:10:13,382 INFO L226 Difference]: Without dead ends: 8889 [2022-11-03 04:10:13,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:10:13,412 INFO L413 NwaCegarLoop]: 3793 mSDtfsCounter, 2758 mSDsluCounter, 3090 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2758 SdHoareTripleChecker+Valid, 6483 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:13,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2758 Valid, 6483 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1108 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-11-03 04:10:13,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8889 states. [2022-11-03 04:10:14,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8889 to 8868. [2022-11-03 04:10:14,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8868 states, 5342 states have (on average 1.2781729689254961) internal successors, (6828), 5425 states have internal predecessors, (6828), 2871 states have call successors, (2871), 653 states have call predecessors, (2871), 652 states have return successors, (2871), 2844 states have call predecessors, (2871), 2867 states have call successors, (2871) [2022-11-03 04:10:14,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8868 states to 8868 states and 12570 transitions. [2022-11-03 04:10:14,119 INFO L78 Accepts]: Start accepts. Automaton has 8868 states and 12570 transitions. Word has length 525 [2022-11-03 04:10:14,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:14,122 INFO L495 AbstractCegarLoop]: Abstraction has 8868 states and 12570 transitions. [2022-11-03 04:10:14,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-03 04:10:14,123 INFO L276 IsEmpty]: Start isEmpty. Operand 8868 states and 12570 transitions. [2022-11-03 04:10:14,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2022-11-03 04:10:14,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:14,137 INFO L195 NwaCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:10:14,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:10:14,138 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:10:14,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:14,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1094172796, now seen corresponding path program 1 times [2022-11-03 04:10:14,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:14,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314953991] [2022-11-03 04:10:14,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:14,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:14,991 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2022-11-03 04:10:14,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:14,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314953991] [2022-11-03 04:10:14,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314953991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:14,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:14,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:10:14,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767220187] [2022-11-03 04:10:14,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:14,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:10:14,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:10:14,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:10:14,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:10:14,995 INFO L87 Difference]: Start difference. First operand 8868 states and 12570 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-03 04:10:17,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:10:23,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:10:25,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:25,317 INFO L93 Difference]: Finished difference Result 23176 states and 32916 transitions. [2022-11-03 04:10:25,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:10:25,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 531 [2022-11-03 04:10:25,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:25,411 INFO L225 Difference]: With dead ends: 23176 [2022-11-03 04:10:25,412 INFO L226 Difference]: Without dead ends: 14407 [2022-11-03 04:10:25,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:10:25,456 INFO L413 NwaCegarLoop]: 3903 mSDtfsCounter, 2813 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2815 SdHoareTripleChecker+Valid, 6613 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:25,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2815 Valid, 6613 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1061 Invalid, 2 Unknown, 0 Unchecked, 9.8s Time] [2022-11-03 04:10:25,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14407 states. [2022-11-03 04:10:26,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14407 to 14378. [2022-11-03 04:10:26,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14378 states, 8740 states have (on average 1.2854691075514875) internal successors, (11235), 8873 states have internal predecessors, (11235), 4573 states have call successors, (4573), 1067 states have call predecessors, (4573), 1062 states have return successors, (4580), 4518 states have call predecessors, (4580), 4569 states have call successors, (4580) [2022-11-03 04:10:26,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14378 states to 14378 states and 20388 transitions. [2022-11-03 04:10:26,218 INFO L78 Accepts]: Start accepts. Automaton has 14378 states and 20388 transitions. Word has length 531 [2022-11-03 04:10:26,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:26,219 INFO L495 AbstractCegarLoop]: Abstraction has 14378 states and 20388 transitions. [2022-11-03 04:10:26,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-03 04:10:26,220 INFO L276 IsEmpty]: Start isEmpty. Operand 14378 states and 20388 transitions. [2022-11-03 04:10:26,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2022-11-03 04:10:26,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:26,237 INFO L195 NwaCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:10:26,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 04:10:26,238 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:10:26,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:26,238 INFO L85 PathProgramCache]: Analyzing trace with hash -952654552, now seen corresponding path program 1 times [2022-11-03 04:10:26,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:26,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108645292] [2022-11-03 04:10:26,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:26,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:29,185 INFO L134 CoverageAnalysis]: Checked inductivity of 9846 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9846 trivial. 0 not checked. [2022-11-03 04:10:29,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:29,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108645292] [2022-11-03 04:10:29,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108645292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:29,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:29,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:10:29,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063610016] [2022-11-03 04:10:29,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:29,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:10:29,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:10:29,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:10:29,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:10:29,188 INFO L87 Difference]: Start difference. First operand 14378 states and 20388 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-11-03 04:10:32,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:10:34,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:10:36,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:10:42,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:42,133 INFO L93 Difference]: Finished difference Result 28004 states and 39709 transitions. [2022-11-03 04:10:42,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:10:42,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 560 [2022-11-03 04:10:42,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:42,267 INFO L225 Difference]: With dead ends: 28004 [2022-11-03 04:10:42,268 INFO L226 Difference]: Without dead ends: 28002 [2022-11-03 04:10:42,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:10:42,280 INFO L413 NwaCegarLoop]: 3450 mSDtfsCounter, 3082 mSDsluCounter, 10885 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3087 SdHoareTripleChecker+Valid, 12945 SdHoareTripleChecker+Invalid, 1871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1867 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:42,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3087 Valid, 12945 Invalid, 1871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1867 Invalid, 2 Unknown, 0 Unchecked, 12.0s Time] [2022-11-03 04:10:42,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28002 states. [2022-11-03 04:10:43,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28002 to 27988. [2022-11-03 04:10:43,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27988 states, 17015 states have (on average 1.287334704672348) internal successors, (21904), 17279 states have internal predecessors, (21904), 8889 states have call successors, (8889), 2091 states have call predecessors, (8889), 2081 states have return successors, (8903), 8774 states have call predecessors, (8903), 8881 states have call successors, (8903) [2022-11-03 04:10:44,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27988 states to 27988 states and 39696 transitions. [2022-11-03 04:10:44,085 INFO L78 Accepts]: Start accepts. Automaton has 27988 states and 39696 transitions. Word has length 560 [2022-11-03 04:10:44,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:44,087 INFO L495 AbstractCegarLoop]: Abstraction has 27988 states and 39696 transitions. [2022-11-03 04:10:44,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-11-03 04:10:44,088 INFO L276 IsEmpty]: Start isEmpty. Operand 27988 states and 39696 transitions. [2022-11-03 04:10:44,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2022-11-03 04:10:44,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:44,102 INFO L195 NwaCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:10:44,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 04:10:44,102 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:10:44,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:44,103 INFO L85 PathProgramCache]: Analyzing trace with hash 52153813, now seen corresponding path program 1 times [2022-11-03 04:10:44,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:44,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343487810] [2022-11-03 04:10:44,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:44,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:47,144 INFO L134 CoverageAnalysis]: Checked inductivity of 9845 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9843 trivial. 0 not checked. [2022-11-03 04:10:47,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:47,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343487810] [2022-11-03 04:10:47,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343487810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:47,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:47,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:10:47,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399416386] [2022-11-03 04:10:47,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:47,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:10:47,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:10:47,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:10:47,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:10:47,147 INFO L87 Difference]: Start difference. First operand 27988 states and 39696 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-03 04:10:52,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:52,990 INFO L93 Difference]: Finished difference Result 27998 states and 39705 transitions. [2022-11-03 04:10:52,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:10:52,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 566 [2022-11-03 04:10:52,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:53,141 INFO L225 Difference]: With dead ends: 27998 [2022-11-03 04:10:53,141 INFO L226 Difference]: Without dead ends: 27996 [2022-11-03 04:10:53,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:10:53,163 INFO L413 NwaCegarLoop]: 2748 mSDtfsCounter, 3083 mSDsluCounter, 6413 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3087 SdHoareTripleChecker+Valid, 8231 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:53,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3087 Valid, 8231 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-03 04:10:53,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27996 states. [2022-11-03 04:10:54,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27996 to 27996. [2022-11-03 04:10:54,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27996 states, 17021 states have (on average 1.287233417543035) internal successors, (21910), 17285 states have internal predecessors, (21910), 8889 states have call successors, (8889), 2093 states have call predecessors, (8889), 2083 states have return successors, (8903), 8774 states have call predecessors, (8903), 8881 states have call successors, (8903) [2022-11-03 04:10:54,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27996 states to 27996 states and 39702 transitions. [2022-11-03 04:10:54,948 INFO L78 Accepts]: Start accepts. Automaton has 27996 states and 39702 transitions. Word has length 566 [2022-11-03 04:10:54,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:54,949 INFO L495 AbstractCegarLoop]: Abstraction has 27996 states and 39702 transitions. [2022-11-03 04:10:54,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-03 04:10:54,949 INFO L276 IsEmpty]: Start isEmpty. Operand 27996 states and 39702 transitions. [2022-11-03 04:10:54,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2022-11-03 04:10:54,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:54,960 INFO L195 NwaCegarLoop]: trace histogram [51, 49, 49, 49, 49, 49, 49, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:10:54,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 04:10:54,960 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:10:54,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:54,961 INFO L85 PathProgramCache]: Analyzing trace with hash 242930125, now seen corresponding path program 1 times [2022-11-03 04:10:54,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:54,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240921435] [2022-11-03 04:10:54,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:54,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:55,203 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 04:10:55,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985601635] [2022-11-03 04:10:55,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:55,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:10:55,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:10:55,209 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:10:55,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 04:10:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:58,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 8842 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 04:10:58,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:58,315 INFO L134 CoverageAnalysis]: Checked inductivity of 9665 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 9445 trivial. 0 not checked. [2022-11-03 04:10:58,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:10:58,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:58,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240921435] [2022-11-03 04:10:58,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 04:10:58,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985601635] [2022-11-03 04:10:58,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985601635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:58,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:58,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:10:58,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934573221] [2022-11-03 04:10:58,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:58,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:10:58,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:10:58,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:10:58,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:10:58,319 INFO L87 Difference]: Start difference. First operand 27996 states and 39702 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (63), 3 states have call predecessors, (63), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-03 04:11:02,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:02,667 INFO L93 Difference]: Finished difference Result 42293 states and 59970 transitions. [2022-11-03 04:11:02,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:11:02,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (63), 3 states have call predecessors, (63), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 574 [2022-11-03 04:11:02,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:02,805 INFO L225 Difference]: With dead ends: 42293 [2022-11-03 04:11:02,805 INFO L226 Difference]: Without dead ends: 28645 [2022-11-03 04:11:02,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:11:02,858 INFO L413 NwaCegarLoop]: 2942 mSDtfsCounter, 866 mSDsluCounter, 3158 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 5649 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:02,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 5649 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-03 04:11:02,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28645 states. [2022-11-03 04:11:04,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28645 to 28641. [2022-11-03 04:11:04,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28641 states, 17426 states have (on average 1.2864111098358775) internal successors, (22417), 17697 states have internal predecessors, (22417), 9083 states have call successors, (9083), 2139 states have call predecessors, (9083), 2129 states have return successors, (9097), 8966 states have call predecessors, (9097), 9075 states have call successors, (9097) [2022-11-03 04:11:04,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28641 states to 28641 states and 40597 transitions. [2022-11-03 04:11:04,622 INFO L78 Accepts]: Start accepts. Automaton has 28641 states and 40597 transitions. Word has length 574 [2022-11-03 04:11:04,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:04,623 INFO L495 AbstractCegarLoop]: Abstraction has 28641 states and 40597 transitions. [2022-11-03 04:11:04,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (63), 3 states have call predecessors, (63), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-03 04:11:04,624 INFO L276 IsEmpty]: Start isEmpty. Operand 28641 states and 40597 transitions. [2022-11-03 04:11:04,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2022-11-03 04:11:04,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:04,634 INFO L195 NwaCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:04,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 04:11:04,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f76508b-aa06-4a07-ae75-2f2774320491/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:11:04,850 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:11:04,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:04,850 INFO L85 PathProgramCache]: Analyzing trace with hash 840860939, now seen corresponding path program 1 times [2022-11-03 04:11:04,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:04,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060990568] [2022-11-03 04:11:04,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:04,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:07,707 INFO L134 CoverageAnalysis]: Checked inductivity of 9855 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9851 trivial. 0 not checked. [2022-11-03 04:11:07,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:07,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060990568] [2022-11-03 04:11:07,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060990568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:07,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:07,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:11:07,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465904031] [2022-11-03 04:11:07,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:07,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:11:07,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:07,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:11:07,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:11:07,711 INFO L87 Difference]: Start difference. First operand 28641 states and 40597 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-03 04:11:11,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:11:13,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:11:20,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:20,955 INFO L93 Difference]: Finished difference Result 44985 states and 63585 transitions. [2022-11-03 04:11:20,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:11:20,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 571 [2022-11-03 04:11:20,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:21,162 INFO L225 Difference]: With dead ends: 44985 [2022-11-03 04:11:21,164 INFO L226 Difference]: Without dead ends: 44983 [2022-11-03 04:11:21,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:11:21,183 INFO L413 NwaCegarLoop]: 3515 mSDtfsCounter, 2783 mSDsluCounter, 11024 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2786 SdHoareTripleChecker+Valid, 13115 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:21,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2786 Valid, 13115 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1924 Invalid, 2 Unknown, 0 Unchecked, 11.7s Time] [2022-11-03 04:11:21,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44983 states. [2022-11-03 04:11:23,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44983 to 44881. [2022-11-03 04:11:23,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44881 states, 27241 states have (on average 1.2849748540802466) internal successors, (35004), 27765 states have internal predecessors, (35004), 14113 states have call successors, (14113), 3597 states have call predecessors, (14113), 3524 states have return successors, (14349), 13728 states have call predecessors, (14349), 14101 states have call successors, (14349) [2022-11-03 04:11:23,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44881 states to 44881 states and 63466 transitions. [2022-11-03 04:11:23,852 INFO L78 Accepts]: Start accepts. Automaton has 44881 states and 63466 transitions. Word has length 571 [2022-11-03 04:11:23,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:23,852 INFO L495 AbstractCegarLoop]: Abstraction has 44881 states and 63466 transitions. [2022-11-03 04:11:23,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-03 04:11:23,853 INFO L276 IsEmpty]: Start isEmpty. Operand 44881 states and 63466 transitions. [2022-11-03 04:11:23,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2022-11-03 04:11:23,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:23,866 INFO L195 NwaCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:23,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 04:11:23,867 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:11:23,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:23,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1155311006, now seen corresponding path program 1 times [2022-11-03 04:11:23,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:23,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001831799] [2022-11-03 04:11:23,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:23,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 9864 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9858 trivial. 0 not checked. [2022-11-03 04:11:26,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:26,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001831799] [2022-11-03 04:11:26,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001831799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:26,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:26,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:11:26,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530393828] [2022-11-03 04:11:26,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:26,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:11:26,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:26,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:11:26,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:11:26,781 INFO L87 Difference]: Start difference. First operand 44881 states and 63466 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2022-11-03 04:11:30,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:11:32,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:11:34,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:11:41,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:41,432 INFO L93 Difference]: Finished difference Result 44902 states and 63483 transitions. [2022-11-03 04:11:41,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:11:41,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) Word has length 575 [2022-11-03 04:11:41,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:41,616 INFO L225 Difference]: With dead ends: 44902 [2022-11-03 04:11:41,616 INFO L226 Difference]: Without dead ends: 44900 [2022-11-03 04:11:41,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:11:41,641 INFO L413 NwaCegarLoop]: 3453 mSDtfsCounter, 3077 mSDsluCounter, 10885 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3079 SdHoareTripleChecker+Valid, 12948 SdHoareTripleChecker+Invalid, 1871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1867 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:41,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3079 Valid, 12948 Invalid, 1871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1867 Invalid, 2 Unknown, 0 Unchecked, 13.0s Time] [2022-11-03 04:11:41,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44900 states. [2022-11-03 04:11:43,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44900 to 44885. [2022-11-03 04:11:43,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44885 states, 27244 states have (on average 1.2849434737923946) internal successors, (35007), 27768 states have internal predecessors, (35007), 14113 states have call successors, (14113), 3598 states have call predecessors, (14113), 3525 states have return successors, (14349), 13728 states have call predecessors, (14349), 14101 states have call successors, (14349) [2022-11-03 04:11:43,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44885 states to 44885 states and 63469 transitions. [2022-11-03 04:11:43,851 INFO L78 Accepts]: Start accepts. Automaton has 44885 states and 63469 transitions. Word has length 575 [2022-11-03 04:11:43,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:43,852 INFO L495 AbstractCegarLoop]: Abstraction has 44885 states and 63469 transitions. [2022-11-03 04:11:43,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2022-11-03 04:11:43,852 INFO L276 IsEmpty]: Start isEmpty. Operand 44885 states and 63469 transitions. [2022-11-03 04:11:43,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2022-11-03 04:11:43,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:43,866 INFO L195 NwaCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:43,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 04:11:43,866 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:11:43,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:43,867 INFO L85 PathProgramCache]: Analyzing trace with hash 123841809, now seen corresponding path program 1 times [2022-11-03 04:11:43,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:43,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054597077] [2022-11-03 04:11:43,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:43,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:46,847 INFO L134 CoverageAnalysis]: Checked inductivity of 9875 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9867 trivial. 0 not checked. [2022-11-03 04:11:46,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:46,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054597077] [2022-11-03 04:11:46,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054597077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:46,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:46,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:11:46,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190082968] [2022-11-03 04:11:46,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:46,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:11:46,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:46,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:11:46,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:11:46,850 INFO L87 Difference]: Start difference. First operand 44885 states and 63469 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-03 04:11:49,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:11:52,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:12:00,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:12:00,010 INFO L93 Difference]: Finished difference Result 44966 states and 63556 transitions. [2022-11-03 04:12:00,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:12:00,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 581 [2022-11-03 04:12:00,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:12:00,138 INFO L225 Difference]: With dead ends: 44966 [2022-11-03 04:12:00,138 INFO L226 Difference]: Without dead ends: 44962 [2022-11-03 04:12:00,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:12:00,153 INFO L413 NwaCegarLoop]: 3463 mSDtfsCounter, 3075 mSDsluCounter, 10906 mSDsCounter, 0 mSdLazyCounter, 1870 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3078 SdHoareTripleChecker+Valid, 12978 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1870 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:12:00,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3078 Valid, 12978 Invalid, 1874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1870 Invalid, 2 Unknown, 0 Unchecked, 11.4s Time] [2022-11-03 04:12:00,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44962 states. [2022-11-03 04:12:01,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44962 to 44943. [2022-11-03 04:12:01,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44943 states, 27278 states have (on average 1.2846982916636116) internal successors, (35044), 27805 states have internal predecessors, (35044), 14125 states have call successors, (14125), 3607 states have call predecessors, (14125), 3537 states have return successors, (14367), 13740 states have call predecessors, (14367), 14113 states have call successors, (14367) [2022-11-03 04:12:02,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44943 states to 44943 states and 63536 transitions. [2022-11-03 04:12:02,162 INFO L78 Accepts]: Start accepts. Automaton has 44943 states and 63536 transitions. Word has length 581 [2022-11-03 04:12:02,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:12:02,162 INFO L495 AbstractCegarLoop]: Abstraction has 44943 states and 63536 transitions. [2022-11-03 04:12:02,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-03 04:12:02,163 INFO L276 IsEmpty]: Start isEmpty. Operand 44943 states and 63536 transitions. [2022-11-03 04:12:02,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2022-11-03 04:12:02,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:12:02,178 INFO L195 NwaCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:12:02,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 04:12:02,178 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:12:02,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:12:02,179 INFO L85 PathProgramCache]: Analyzing trace with hash -197377891, now seen corresponding path program 1 times [2022-11-03 04:12:02,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:12:02,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173746367] [2022-11-03 04:12:02,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:12:02,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:12:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:12:02,967 INFO L134 CoverageAnalysis]: Checked inductivity of 9833 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9830 trivial. 0 not checked. [2022-11-03 04:12:02,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:12:02,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173746367] [2022-11-03 04:12:02,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173746367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:12:02,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:12:02,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:12:02,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898289588] [2022-11-03 04:12:02,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:12:02,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:12:02,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:12:02,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:12:02,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:12:02,971 INFO L87 Difference]: Start difference. First operand 44943 states and 63536 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-03 04:12:05,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:08,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:12:11,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:12:15,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:12:15,308 INFO L93 Difference]: Finished difference Result 108288 states and 153273 transitions. [2022-11-03 04:12:15,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:12:15,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 582 [2022-11-03 04:12:15,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:12:15,694 INFO L225 Difference]: With dead ends: 108288 [2022-11-03 04:12:15,694 INFO L226 Difference]: Without dead ends: 64724 [2022-11-03 04:12:15,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:12:15,838 INFO L413 NwaCegarLoop]: 4041 mSDtfsCounter, 2802 mSDsluCounter, 3157 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2804 SdHoareTripleChecker+Valid, 6749 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:12:15,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2804 Valid, 6749 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1112 Invalid, 2 Unknown, 0 Unchecked, 9.6s Time] [2022-11-03 04:12:15,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64724 states. [2022-11-03 04:12:18,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64724 to 64627. [2022-11-03 04:12:18,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64627 states, 39306 states have (on average 1.2864193761766651) internal successors, (50564), 40075 states have internal predecessors, (50564), 20227 states have call successors, (20227), 5200 states have call predecessors, (20227), 5091 states have return successors, (20592), 19645 states have call predecessors, (20592), 20215 states have call successors, (20592) [2022-11-03 04:12:18,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64627 states to 64627 states and 91383 transitions. [2022-11-03 04:12:18,976 INFO L78 Accepts]: Start accepts. Automaton has 64627 states and 91383 transitions. Word has length 582 [2022-11-03 04:12:18,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:12:18,978 INFO L495 AbstractCegarLoop]: Abstraction has 64627 states and 91383 transitions. [2022-11-03 04:12:18,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-03 04:12:18,978 INFO L276 IsEmpty]: Start isEmpty. Operand 64627 states and 91383 transitions. [2022-11-03 04:12:18,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2022-11-03 04:12:18,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:12:18,993 INFO L195 NwaCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:12:18,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 04:12:18,993 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:12:18,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:12:18,994 INFO L85 PathProgramCache]: Analyzing trace with hash 904250270, now seen corresponding path program 1 times [2022-11-03 04:12:18,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:12:18,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416327453] [2022-11-03 04:12:18,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:12:18,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:12:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:12:21,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9896 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9886 trivial. 0 not checked. [2022-11-03 04:12:21,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:12:21,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416327453] [2022-11-03 04:12:21,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416327453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:12:21,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:12:21,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:12:21,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451345123] [2022-11-03 04:12:21,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:12:21,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:12:21,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:12:21,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:12:21,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:12:21,274 INFO L87 Difference]: Start difference. First operand 64627 states and 91383 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, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2022-11-03 04:12:24,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:12:28,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:12:35,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:12:35,407 INFO L93 Difference]: Finished difference Result 101792 states and 144416 transitions. [2022-11-03 04:12:35,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:12:35,410 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, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 585 [2022-11-03 04:12:35,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:12:35,765 INFO L225 Difference]: With dead ends: 101792 [2022-11-03 04:12:35,765 INFO L226 Difference]: Without dead ends: 101657 [2022-11-03 04:12:35,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:12:35,802 INFO L413 NwaCegarLoop]: 3492 mSDtfsCounter, 3066 mSDsluCounter, 10975 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3066 SdHoareTripleChecker+Valid, 13065 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:12:35,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3066 Valid, 13065 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1885 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2022-11-03 04:12:35,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101657 states.