./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-radio-wl128x-fm_drv.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc7a7ac-55db-47ad-869a-43cdae767db0/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc7a7ac-55db-47ad-869a-43cdae767db0/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc7a7ac-55db-47ad-869a-43cdae767db0/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc7a7ac-55db-47ad-869a-43cdae767db0/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc7a7ac-55db-47ad-869a-43cdae767db0/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc7a7ac-55db-47ad-869a-43cdae767db0/bin/utaipan-TEXQjIfE4P --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 f6012e8ec841b08462bbd246c354a43139de7ccb42d1c6282a50e12dbc313f31 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:21:37,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:21:37,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:21:37,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:21:37,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:21:37,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:21:37,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:21:37,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:21:37,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:21:37,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:21:37,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:21:37,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:21:37,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:21:37,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:21:37,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:21:37,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:21:37,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:21:37,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:21:37,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:21:37,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:21:37,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:21:37,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:21:37,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:21:37,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:21:37,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:21:37,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:21:37,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:21:37,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:21:37,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:21:37,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:21:37,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:21:37,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:21:37,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:21:37,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:21:37,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:21:37,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:21:37,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:21:37,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:21:37,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:21:37,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:21:37,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:21:37,750 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc7a7ac-55db-47ad-869a-43cdae767db0/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:21:37,806 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:21:37,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:21:37,807 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:21:37,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:21:37,808 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:21:37,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:21:37,808 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:21:37,809 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:21:37,809 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:21:37,809 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:21:37,809 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:21:37,810 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:21:37,810 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:21:37,810 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:21:37,810 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:21:37,811 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:21:37,811 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:21:37,811 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:21:37,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:21:37,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:21:37,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:21:37,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:21:37,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:21:37,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:21:37,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:21:37,814 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:21:37,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:21:37,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:21:37,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:21:37,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:21:37,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:21:37,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:21:37,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:21:37,816 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:21:37,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:21:37,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:21:37,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:21:37,818 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:21:37,818 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc7a7ac-55db-47ad-869a-43cdae767db0/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc7a7ac-55db-47ad-869a-43cdae767db0/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6012e8ec841b08462bbd246c354a43139de7ccb42d1c6282a50e12dbc313f31 [2021-11-21 01:21:38,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:21:38,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:21:38,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:21:38,184 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:21:38,185 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:21:38,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc7a7ac-55db-47ad-869a-43cdae767db0/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-21 01:21:38,263 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc7a7ac-55db-47ad-869a-43cdae767db0/bin/utaipan-TEXQjIfE4P/data/8c064f02b/4e0c9cc2f7d34014be1e607f7e94f88f/FLAG25f99a52b [2021-11-21 01:21:39,378 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:21:39,379 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc7a7ac-55db-47ad-869a-43cdae767db0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-21 01:21:39,450 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc7a7ac-55db-47ad-869a-43cdae767db0/bin/utaipan-TEXQjIfE4P/data/8c064f02b/4e0c9cc2f7d34014be1e607f7e94f88f/FLAG25f99a52b [2021-11-21 01:21:39,708 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc7a7ac-55db-47ad-869a-43cdae767db0/bin/utaipan-TEXQjIfE4P/data/8c064f02b/4e0c9cc2f7d34014be1e607f7e94f88f [2021-11-21 01:21:39,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:21:39,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:21:39,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:21:39,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:21:39,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:21:39,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:21:39" (1/1) ... [2021-11-21 01:21:39,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@357f4d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:39, skipping insertion in model container [2021-11-21 01:21:39,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:21:39" (1/1) ... [2021-11-21 01:21:39,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:21:39,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:21:43,312 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_7dc7a7ac-55db-47ad-869a-43cdae767db0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314540,314553] [2021-11-21 01:21:43,315 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_7dc7a7ac-55db-47ad-869a-43cdae767db0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314706,314719] [2021-11-21 01:21:43,316 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_7dc7a7ac-55db-47ad-869a-43cdae767db0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314870,314883] [2021-11-21 01:21:43,317 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc7a7ac-55db-47ad-869a-43cdae767db0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[315035,315048] [2021-11-21 01:21:43,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:21:43,476 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:21:43,975 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_7dc7a7ac-55db-47ad-869a-43cdae767db0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314540,314553] [2021-11-21 01:21:43,976 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_7dc7a7ac-55db-47ad-869a-43cdae767db0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314706,314719] [2021-11-21 01:21:43,977 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_7dc7a7ac-55db-47ad-869a-43cdae767db0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314870,314883] [2021-11-21 01:21:43,977 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_7dc7a7ac-55db-47ad-869a-43cdae767db0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[315035,315048] [2021-11-21 01:21:43,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:21:44,415 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:21:44,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:44 WrapperNode [2021-11-21 01:21:44,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:21:44,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:21:44,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:21:44,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:21:44,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:44" (1/1) ... [2021-11-21 01:21:44,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:44" (1/1) ... [2021-11-21 01:21:44,842 INFO L137 Inliner]: procedures = 386, calls = 2493, calls flagged for inlining = 198, calls inlined = 148, statements flattened = 4944 [2021-11-21 01:21:44,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:21:44,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:21:44,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:21:44,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:21:44,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:44" (1/1) ... [2021-11-21 01:21:44,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:44" (1/1) ... [2021-11-21 01:21:44,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:44" (1/1) ... [2021-11-21 01:21:44,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:44" (1/1) ... [2021-11-21 01:21:45,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:44" (1/1) ... [2021-11-21 01:21:45,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:44" (1/1) ... [2021-11-21 01:21:45,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:44" (1/1) ... [2021-11-21 01:21:45,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:21:45,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:21:45,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:21:45,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:21:45,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:44" (1/1) ... [2021-11-21 01:21:45,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:21:45,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc7a7ac-55db-47ad-869a-43cdae767db0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:21:45,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc7a7ac-55db-47ad-869a-43cdae767db0/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:21:45,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc7a7ac-55db-47ad-869a-43cdae767db0/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:21:45,294 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-21 01:21:45,294 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-21 01:21:45,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:21:45,294 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:21:45,294 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-11-21 01:21:45,295 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-11-21 01:21:45,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:21:45,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:21:45,295 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 01:21:45,295 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 01:21:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_stereo_mono [2021-11-21 01:21:45,296 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_stereo_mono [2021-11-21 01:21:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:21:45,296 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:21:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_len [2021-11-21 01:21:45,297 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_len [2021-11-21 01:21:45,297 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2021-11-21 01:21:45,297 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2021-11-21 01:21:45,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:21:45,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:21:45,297 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 01:21:45,298 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 01:21:45,298 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2021-11-21 01:21:45,298 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2021-11-21 01:21:45,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:21:45,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:21:45,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-21 01:21:45,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-21 01:21:45,299 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 01:21:45,299 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 01:21:45,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:21:45,299 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-21 01:21:45,300 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-21 01:21:45,300 INFO L130 BoogieDeclarations]: Found specification of procedure st_unregister [2021-11-21 01:21:45,300 INFO L138 BoogieDeclarations]: Found implementation of procedure st_unregister [2021-11-21 01:21:45,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:21:45,300 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-21 01:21:45,301 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-21 01:21:45,301 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 01:21:45,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 01:21:45,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:21:45,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:21:45,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:21:45,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:21:45,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_fmdev [2021-11-21 01:21:45,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_fmdev [2021-11-21 01:21:45,302 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_release [2021-11-21 01:21:45,302 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_release [2021-11-21 01:21:45,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:21:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:21:45,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_fmdev [2021-11-21 01:21:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_fmdev [2021-11-21 01:21:45,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:21:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:21:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 01:21:45,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 01:21:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_rds_mode [2021-11-21 01:21:45,304 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_rds_mode [2021-11-21 01:21:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2021-11-21 01:21:45,304 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2021-11-21 01:21:45,305 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata [2021-11-21 01:21:45,305 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata [2021-11-21 01:21:45,305 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_rds_mode [2021-11-21 01:21:45,305 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_rds_mode [2021-11-21 01:21:45,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:21:45,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 01:21:45,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 01:21:45,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 01:21:45,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 01:21:45,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-21 01:21:45,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-21 01:21:45,307 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-21 01:21:45,307 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-21 01:21:45,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:21:45,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:21:45,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:21:45,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:21:45,308 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-21 01:21:45,308 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-21 01:21:45,308 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-21 01:21:45,308 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-21 01:21:45,308 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_preemph_filter [2021-11-21 01:21:45,308 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_preemph_filter [2021-11-21 01:21:45,309 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-11-21 01:21:45,309 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-11-21 01:21:45,309 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-21 01:21:45,309 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-21 01:21:45,309 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-21 01:21:45,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-21 01:21:45,310 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 01:21:45,310 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 01:21:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure fm_g_volatile_ctrl [2021-11-21 01:21:45,370 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_g_volatile_ctrl [2021-11-21 01:21:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:21:45,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:21:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-21 01:21:45,370 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-21 01:21:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-21 01:21:45,371 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-21 01:21:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure fm_config_rx_mute_reg [2021-11-21 01:21:45,371 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_config_rx_mute_reg [2021-11-21 01:21:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2021-11-21 01:21:45,371 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2021-11-21 01:21:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:21:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:21:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_data_mode [2021-11-21 01:21:45,372 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_data_mode [2021-11-21 01:21:45,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:21:45,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:21:45,372 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_pwr_lvl [2021-11-21 01:21:45,372 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_pwr_lvl [2021-11-21 01:21:45,372 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-11-21 01:21:45,372 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-11-21 01:21:45,372 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_prepare [2021-11-21 01:21:45,372 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_prepare [2021-11-21 01:21:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_send_cmd [2021-11-21 01:21:45,373 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_send_cmd [2021-11-21 01:21:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2021-11-21 01:21:45,373 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2021-11-21 01:21:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure fm_send_cmd [2021-11-21 01:21:45,373 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_send_cmd [2021-11-21 01:21:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-21 01:21:45,373 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-21 01:21:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:21:45,374 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:21:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call_stage [2021-11-21 01:21:45,374 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call_stage [2021-11-21 01:21:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-21 01:21:45,374 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-21 01:21:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2021-11-21 01:21:45,374 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2021-11-21 01:21:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:21:45,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2021-11-21 01:21:45,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2021-11-21 01:21:45,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:21:45,375 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_rds_cache [2021-11-21 01:21:45,375 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_rds_cache [2021-11-21 01:21:45,375 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_station_info [2021-11-21 01:21:45,375 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_station_info [2021-11-21 01:21:45,375 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_s_ctrl [2021-11-21 01:21:45,375 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_s_ctrl [2021-11-21 01:21:45,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:21:45,376 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-21 01:21:45,376 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-21 01:21:45,376 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2021-11-21 01:21:45,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2021-11-21 01:21:45,376 INFO L130 BoogieDeclarations]: Found specification of procedure enable_xmit [2021-11-21 01:21:45,376 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_xmit [2021-11-21 01:21:45,376 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-21 01:21:45,376 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-21 01:21:45,376 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_volume [2021-11-21 01:21:45,376 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_volume [2021-11-21 01:21:45,376 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-21 01:21:45,376 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-21 01:21:45,376 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-21 01:21:45,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-21 01:21:45,377 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-21 01:21:45,377 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-21 01:21:45,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:21:45,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:21:45,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 01:21:45,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 01:21:45,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_or_killable_mutex_of_fmdev [2021-11-21 01:21:45,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_or_killable_mutex_of_fmdev [2021-11-21 01:21:45,377 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_text [2021-11-21 01:21:45,377 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_text [2021-11-21 01:21:45,377 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2021-11-21 01:21:45,377 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2021-11-21 01:21:45,378 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_release [2021-11-21 01:21:45,378 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_release [2021-11-21 01:21:45,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 01:21:45,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 01:21:45,378 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 01:21:45,378 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 01:21:45,378 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:21:45,378 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:21:45,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 01:21:45,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 01:21:45,379 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-11-21 01:21:45,379 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-11-21 01:21:45,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:21:45,379 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-21 01:21:45,379 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-21 01:21:45,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:21:45,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:21:45,380 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_open [2021-11-21 01:21:45,380 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_open [2021-11-21 01:21:45,380 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 01:21:45,380 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 01:21:45,380 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_freq [2021-11-21 01:21:45,380 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_freq [2021-11-21 01:21:45,388 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_mode [2021-11-21 01:21:45,388 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_mode [2021-11-21 01:21:45,388 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_write [2021-11-21 01:21:45,389 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_write [2021-11-21 01:21:45,389 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-21 01:21:45,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-21 01:21:45,389 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call [2021-11-21 01:21:45,389 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call [2021-11-21 01:21:45,390 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:21:45,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:21:45,391 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-21 01:21:45,391 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-21 01:21:45,391 INFO L130 BoogieDeclarations]: Found specification of procedure fm_power_down [2021-11-21 01:21:45,391 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_power_down [2021-11-21 01:21:45,391 INFO L130 BoogieDeclarations]: Found specification of procedure fm_download_firmware [2021-11-21 01:21:45,392 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_download_firmware [2021-11-21 01:21:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:21:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:21:45,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:21:46,331 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:21:46,338 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:21:46,623 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:21:51,675 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 01:21:51,784 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:21:52,917 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:21:52,917 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:21:52,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:21:52 BoogieIcfgContainer [2021-11-21 01:21:52,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:21:52,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:21:52,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:21:52,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:21:52,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:21:39" (1/3) ... [2021-11-21 01:21:52,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2360d248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:21:52, skipping insertion in model container [2021-11-21 01:21:52,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:44" (2/3) ... [2021-11-21 01:21:52,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2360d248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:21:52, skipping insertion in model container [2021-11-21 01:21:52,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:21:52" (3/3) ... [2021-11-21 01:21:52,933 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-21 01:21:52,940 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:21:52,940 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 01:21:53,024 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:21:53,045 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:21:53,045 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 01:21:53,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 1354 states, 833 states have (on average 1.3445378151260505) internal successors, (1120), 849 states have internal predecessors, (1120), 422 states have call successors, (422), 97 states have call predecessors, (422), 96 states have return successors, (415), 412 states have call predecessors, (415), 415 states have call successors, (415) [2021-11-21 01:21:53,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-21 01:21:53,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:21:53,163 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:21:53,164 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:21:53,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:21:53,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1690399408, now seen corresponding path program 1 times [2021-11-21 01:21:53,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:21:53,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212238780] [2021-11-21 01:21:53,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:21:53,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:21:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:21:54,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-11-21 01:21:54,262 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:21:54,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212238780] [2021-11-21 01:21:54,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212238780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:21:54,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:21:54,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:21:54,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566158358] [2021-11-21 01:21:54,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:21:54,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:21:54,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:21:54,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:21:54,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:21:54,356 INFO L87 Difference]: Start difference. First operand has 1354 states, 833 states have (on average 1.3445378151260505) internal successors, (1120), 849 states have internal predecessors, (1120), 422 states have call successors, (422), 97 states have call predecessors, (422), 96 states have return successors, (415), 412 states have call predecessors, (415), 415 states have call successors, (415) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 01:21:57,523 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:01,608 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:01,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:01,760 INFO L93 Difference]: Finished difference Result 3841 states and 5609 transitions. [2021-11-21 01:22:01,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:22:01,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 216 [2021-11-21 01:22:01,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:01,819 INFO L225 Difference]: With dead ends: 3841 [2021-11-21 01:22:01,819 INFO L226 Difference]: Without dead ends: 2515 [2021-11-21 01:22:01,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:22:01,844 INFO L933 BasicCegarLoop]: 2040 mSDtfsCounter, 1800 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 3622 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:01,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1800 Valid, 3622 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 524 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2021-11-21 01:22:01,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2021-11-21 01:22:02,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2510. [2021-11-21 01:22:02,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2510 states, 1565 states have (on average 1.34185303514377) internal successors, (2100), 1596 states have internal predecessors, (2100), 759 states have call successors, (759), 184 states have call predecessors, (759), 183 states have return successors, (755), 748 states have call predecessors, (755), 755 states have call successors, (755) [2021-11-21 01:22:02,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2510 states to 2510 states and 3614 transitions. [2021-11-21 01:22:02,212 INFO L78 Accepts]: Start accepts. Automaton has 2510 states and 3614 transitions. Word has length 216 [2021-11-21 01:22:02,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:02,214 INFO L470 AbstractCegarLoop]: Abstraction has 2510 states and 3614 transitions. [2021-11-21 01:22:02,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 01:22:02,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2510 states and 3614 transitions. [2021-11-21 01:22:02,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-21 01:22:02,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:02,229 INFO L514 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:22:02,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:22:02,230 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:22:02,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:02,231 INFO L85 PathProgramCache]: Analyzing trace with hash 422409988, now seen corresponding path program 1 times [2021-11-21 01:22:02,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:02,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503022337] [2021-11-21 01:22:02,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:02,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:22:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2021-11-21 01:22:02,730 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:02,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503022337] [2021-11-21 01:22:02,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503022337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:22:02,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:22:02,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:22:02,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904323857] [2021-11-21 01:22:02,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:22:02,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:22:02,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:22:02,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:22:02,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:22:02,739 INFO L87 Difference]: Start difference. First operand 2510 states and 3614 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 01:22:07,547 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:07,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:07,838 INFO L93 Difference]: Finished difference Result 5473 states and 7749 transitions. [2021-11-21 01:22:07,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:22:07,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 235 [2021-11-21 01:22:07,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:07,874 INFO L225 Difference]: With dead ends: 5473 [2021-11-21 01:22:07,874 INFO L226 Difference]: Without dead ends: 3002 [2021-11-21 01:22:07,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:22:07,894 INFO L933 BasicCegarLoop]: 1989 mSDtfsCounter, 1173 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 3623 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:07,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 3623 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 567 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-21 01:22:07,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2021-11-21 01:22:08,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 2978. [2021-11-21 01:22:08,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2978 states, 1831 states have (on average 1.3118514472965592) internal successors, (2402), 1876 states have internal predecessors, (2402), 873 states have call successors, (873), 272 states have call predecessors, (873), 271 states have return successors, (871), 854 states have call predecessors, (871), 869 states have call successors, (871) [2021-11-21 01:22:08,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 4146 transitions. [2021-11-21 01:22:08,114 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 4146 transitions. Word has length 235 [2021-11-21 01:22:08,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:08,116 INFO L470 AbstractCegarLoop]: Abstraction has 2978 states and 4146 transitions. [2021-11-21 01:22:08,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 01:22:08,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 4146 transitions. [2021-11-21 01:22:08,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-21 01:22:08,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:08,130 INFO L514 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:22:08,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:22:08,130 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:22:08,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:08,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1423016720, now seen corresponding path program 1 times [2021-11-21 01:22:08,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:08,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880115803] [2021-11-21 01:22:08,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:08,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:22:08,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2021-11-21 01:22:08,525 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:08,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880115803] [2021-11-21 01:22:08,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880115803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:22:08,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:22:08,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:22:08,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693748553] [2021-11-21 01:22:08,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:22:08,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:22:08,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:22:08,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:22:08,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:22:08,532 INFO L87 Difference]: Start difference. First operand 2978 states and 4146 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-21 01:22:12,857 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:15,652 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:16,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:16,296 INFO L93 Difference]: Finished difference Result 5226 states and 7235 transitions. [2021-11-21 01:22:16,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:22:16,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 254 [2021-11-21 01:22:16,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:16,321 INFO L225 Difference]: With dead ends: 5226 [2021-11-21 01:22:16,321 INFO L226 Difference]: Without dead ends: 2287 [2021-11-21 01:22:16,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:22:16,348 INFO L933 BasicCegarLoop]: 1407 mSDtfsCounter, 3017 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 879 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3179 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 2039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:16,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3179 Valid, 1904 Invalid, 2039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 1159 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-11-21 01:22:16,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2021-11-21 01:22:16,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 2279. [2021-11-21 01:22:16,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 1411 states have (on average 1.3012048192771084) internal successors, (1836), 1426 states have internal predecessors, (1836), 650 states have call successors, (650), 216 states have call predecessors, (650), 215 states have return successors, (646), 641 states have call predecessors, (646), 646 states have call successors, (646) [2021-11-21 01:22:16,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 3132 transitions. [2021-11-21 01:22:16,529 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 3132 transitions. Word has length 254 [2021-11-21 01:22:16,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:16,531 INFO L470 AbstractCegarLoop]: Abstraction has 2279 states and 3132 transitions. [2021-11-21 01:22:16,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-21 01:22:16,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 3132 transitions. [2021-11-21 01:22:16,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-21 01:22:16,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:16,545 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 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] [2021-11-21 01:22:16,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:22:16,546 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:22:16,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:16,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1767358384, now seen corresponding path program 1 times [2021-11-21 01:22:16,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:16,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624959788] [2021-11-21 01:22:16,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:16,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:22:17,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1537 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1537 trivial. 0 not checked. [2021-11-21 01:22:17,105 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:17,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624959788] [2021-11-21 01:22:17,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624959788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:22:17,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:22:17,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:22:17,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247421410] [2021-11-21 01:22:17,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:22:17,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:22:17,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:22:17,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:22:17,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:22:17,110 INFO L87 Difference]: Start difference. First operand 2279 states and 3132 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 01:22:23,348 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:23,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:23,819 INFO L93 Difference]: Finished difference Result 2287 states and 3140 transitions. [2021-11-21 01:22:23,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:22:23,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 262 [2021-11-21 01:22:23,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:23,843 INFO L225 Difference]: With dead ends: 2287 [2021-11-21 01:22:23,844 INFO L226 Difference]: Without dead ends: 2285 [2021-11-21 01:22:23,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:22:23,848 INFO L933 BasicCegarLoop]: 1546 mSDtfsCounter, 1716 mSDsluCounter, 3575 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 4641 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:23,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1723 Valid, 4641 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 731 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2021-11-21 01:22:23,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2021-11-21 01:22:23,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2283. [2021-11-21 01:22:24,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 1414 states have (on average 1.3005657708628007) internal successors, (1839), 1429 states have internal predecessors, (1839), 650 states have call successors, (650), 217 states have call predecessors, (650), 216 states have return successors, (646), 641 states have call predecessors, (646), 646 states have call successors, (646) [2021-11-21 01:22:24,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 3135 transitions. [2021-11-21 01:22:24,018 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 3135 transitions. Word has length 262 [2021-11-21 01:22:24,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:24,019 INFO L470 AbstractCegarLoop]: Abstraction has 2283 states and 3135 transitions. [2021-11-21 01:22:24,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 01:22:24,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 3135 transitions. [2021-11-21 01:22:24,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-11-21 01:22:24,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:24,029 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 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] [2021-11-21 01:22:24,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:22:24,029 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:22:24,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:24,030 INFO L85 PathProgramCache]: Analyzing trace with hash 71150415, now seen corresponding path program 1 times [2021-11-21 01:22:24,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:24,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602818498] [2021-11-21 01:22:24,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:24,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:22:24,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1538 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1536 trivial. 0 not checked. [2021-11-21 01:22:24,563 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:24,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602818498] [2021-11-21 01:22:24,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602818498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:22:24,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:22:24,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:22:24,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614691637] [2021-11-21 01:22:24,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:22:24,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:22:24,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:22:24,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:22:24,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:22:24,567 INFO L87 Difference]: Start difference. First operand 2283 states and 3135 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-21 01:22:30,219 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:32,419 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:22:34,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:22:36,052 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:37,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:39,151 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:39,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:39,477 INFO L93 Difference]: Finished difference Result 2289 states and 3140 transitions. [2021-11-21 01:22:39,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:22:39,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 266 [2021-11-21 01:22:39,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:39,503 INFO L225 Difference]: With dead ends: 2289 [2021-11-21 01:22:39,503 INFO L226 Difference]: Without dead ends: 2287 [2021-11-21 01:22:39,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:22:39,507 INFO L933 BasicCegarLoop]: 1549 mSDtfsCounter, 1721 mSDsluCounter, 3561 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1725 SdHoareTripleChecker+Valid, 4634 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:39,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1725 Valid, 4634 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 723 Invalid, 4 Unknown, 0 Unchecked, 14.6s Time] [2021-11-21 01:22:39,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2021-11-21 01:22:39,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 2287. [2021-11-21 01:22:39,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 1417 states have (on average 1.2999294283697953) internal successors, (1842), 1432 states have internal predecessors, (1842), 650 states have call successors, (650), 218 states have call predecessors, (650), 217 states have return successors, (646), 641 states have call predecessors, (646), 646 states have call successors, (646) [2021-11-21 01:22:39,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3138 transitions. [2021-11-21 01:22:39,725 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3138 transitions. Word has length 266 [2021-11-21 01:22:39,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:39,726 INFO L470 AbstractCegarLoop]: Abstraction has 2287 states and 3138 transitions. [2021-11-21 01:22:39,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-21 01:22:39,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3138 transitions. [2021-11-21 01:22:39,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-21 01:22:39,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:39,739 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 3, 2, 2, 2, 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] [2021-11-21 01:22:39,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:22:39,740 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:22:39,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:39,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1985269918, now seen corresponding path program 1 times [2021-11-21 01:22:39,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:39,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785818509] [2021-11-21 01:22:39,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:39,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:22:40,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1556 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2021-11-21 01:22:40,264 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:40,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785818509] [2021-11-21 01:22:40,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785818509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:22:40,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:22:40,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:22:40,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349736525] [2021-11-21 01:22:40,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:22:40,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:22:40,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:22:40,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:22:40,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:22:40,272 INFO L87 Difference]: Start difference. First operand 2287 states and 3138 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 01:22:43,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:46,346 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:48,377 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:50,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:50,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:50,938 INFO L93 Difference]: Finished difference Result 2293 states and 3143 transitions. [2021-11-21 01:22:50,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:22:50,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 271 [2021-11-21 01:22:50,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:50,962 INFO L225 Difference]: With dead ends: 2293 [2021-11-21 01:22:50,962 INFO L226 Difference]: Without dead ends: 2291 [2021-11-21 01:22:50,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:22:50,966 INFO L933 BasicCegarLoop]: 1549 mSDtfsCounter, 1721 mSDsluCounter, 3561 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 4634 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:50,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1724 Valid, 4634 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2021-11-21 01:22:50,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2021-11-21 01:22:51,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2291. [2021-11-21 01:22:51,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 1420 states have (on average 1.2992957746478873) internal successors, (1845), 1435 states have internal predecessors, (1845), 650 states have call successors, (650), 219 states have call predecessors, (650), 218 states have return successors, (646), 641 states have call predecessors, (646), 646 states have call successors, (646) [2021-11-21 01:22:51,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3141 transitions. [2021-11-21 01:22:51,154 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3141 transitions. Word has length 271 [2021-11-21 01:22:51,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:51,156 INFO L470 AbstractCegarLoop]: Abstraction has 2291 states and 3141 transitions. [2021-11-21 01:22:51,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 01:22:51,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3141 transitions. [2021-11-21 01:22:51,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-11-21 01:22:51,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:51,167 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:22:51,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:22:51,168 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:22:51,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:51,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1641763157, now seen corresponding path program 1 times [2021-11-21 01:22:51,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:51,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240449958] [2021-11-21 01:22:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:51,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:22:51,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1549 trivial. 0 not checked. [2021-11-21 01:22:51,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:51,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240449958] [2021-11-21 01:22:51,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240449958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:22:51,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:22:51,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:22:51,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129745660] [2021-11-21 01:22:51,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:22:51,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:22:51,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:22:51,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:22:51,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:22:51,563 INFO L87 Difference]: Start difference. First operand 2291 states and 3141 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-21 01:22:54,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:57,488 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:57,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:57,958 INFO L93 Difference]: Finished difference Result 2299 states and 3149 transitions. [2021-11-21 01:22:57,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:22:57,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 277 [2021-11-21 01:22:57,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:57,980 INFO L225 Difference]: With dead ends: 2299 [2021-11-21 01:22:57,980 INFO L226 Difference]: Without dead ends: 2297 [2021-11-21 01:22:57,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:22:57,984 INFO L933 BasicCegarLoop]: 1549 mSDtfsCounter, 1711 mSDsluCounter, 3575 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 4644 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:57,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1715 Valid, 4644 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 731 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-21 01:22:57,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2021-11-21 01:22:58,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 2295. [2021-11-21 01:22:58,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2295 states, 1423 states have (on average 1.298664792691497) internal successors, (1848), 1438 states have internal predecessors, (1848), 650 states have call successors, (650), 220 states have call predecessors, (650), 219 states have return successors, (646), 641 states have call predecessors, (646), 646 states have call successors, (646) [2021-11-21 01:22:58,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 3144 transitions. [2021-11-21 01:22:58,159 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 3144 transitions. Word has length 277 [2021-11-21 01:22:58,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:58,160 INFO L470 AbstractCegarLoop]: Abstraction has 2295 states and 3144 transitions. [2021-11-21 01:22:58,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-21 01:22:58,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 3144 transitions. [2021-11-21 01:22:58,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-21 01:22:58,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:58,171 INFO L514 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 5, 5, 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] [2021-11-21 01:22:58,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:22:58,171 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:22:58,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:58,172 INFO L85 PathProgramCache]: Analyzing trace with hash 664796076, now seen corresponding path program 1 times [2021-11-21 01:22:58,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:58,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039440885] [2021-11-21 01:22:58,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:58,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:22:58,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1599 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1599 trivial. 0 not checked. [2021-11-21 01:22:58,462 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:58,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039440885] [2021-11-21 01:22:58,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039440885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:22:58,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:22:58,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:22:58,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851274096] [2021-11-21 01:22:58,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:22:58,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:22:58,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:22:58,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:22:58,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:22:58,465 INFO L87 Difference]: Start difference. First operand 2295 states and 3144 transitions. 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, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-21 01:23:01,792 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:03,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:05,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:05,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:23:05,891 INFO L93 Difference]: Finished difference Result 5938 states and 8166 transitions. [2021-11-21 01:23:05,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:23:05,892 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, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 287 [2021-11-21 01:23:05,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:23:05,924 INFO L225 Difference]: With dead ends: 5938 [2021-11-21 01:23:05,925 INFO L226 Difference]: Without dead ends: 3700 [2021-11-21 01:23:05,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:23:05,944 INFO L933 BasicCegarLoop]: 1892 mSDtfsCounter, 1608 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 3418 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:23:05,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1610 Valid, 3418 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 511 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-11-21 01:23:05,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3700 states. [2021-11-21 01:23:06,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3700 to 3656. [2021-11-21 01:23:06,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3656 states, 2292 states have (on average 1.307591623036649) internal successors, (2997), 2325 states have internal predecessors, (2997), 1016 states have call successors, (1016), 346 states have call predecessors, (1016), 345 states have return successors, (1014), 994 states have call predecessors, (1014), 1012 states have call successors, (1014) [2021-11-21 01:23:06,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 5027 transitions. [2021-11-21 01:23:06,281 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 5027 transitions. Word has length 287 [2021-11-21 01:23:06,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:23:06,281 INFO L470 AbstractCegarLoop]: Abstraction has 3656 states and 5027 transitions. [2021-11-21 01:23:06,282 INFO L471 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, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-21 01:23:06,282 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 5027 transitions. [2021-11-21 01:23:06,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-21 01:23:06,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:23:06,292 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:23:06,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:23:06,293 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:23:06,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:23:06,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1551745424, now seen corresponding path program 1 times [2021-11-21 01:23:06,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:23:06,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383424888] [2021-11-21 01:23:06,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:23:06,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:23:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:23:06,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1569 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1561 trivial. 0 not checked. [2021-11-21 01:23:06,675 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:23:06,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383424888] [2021-11-21 01:23:06,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383424888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:23:06,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:23:06,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:23:06,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22213927] [2021-11-21 01:23:06,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:23:06,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:23:06,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:23:06,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:23:06,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:23:06,679 INFO L87 Difference]: Start difference. First operand 3656 states and 5027 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-21 01:23:10,254 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:15,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:18,467 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:22,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:24,377 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:26,402 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:29,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:23:29,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:23:29,630 INFO L93 Difference]: Finished difference Result 6763 states and 9329 transitions. [2021-11-21 01:23:29,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:23:29,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 282 [2021-11-21 01:23:29,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:23:29,696 INFO L225 Difference]: With dead ends: 6763 [2021-11-21 01:23:29,696 INFO L226 Difference]: Without dead ends: 6759 [2021-11-21 01:23:29,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:23:29,704 INFO L933 BasicCegarLoop]: 1994 mSDtfsCounter, 1583 mSDsluCounter, 6222 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 7461 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:23:29,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1584 Valid, 7461 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1030 Invalid, 5 Unknown, 0 Unchecked, 22.5s Time] [2021-11-21 01:23:29,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6759 states. [2021-11-21 01:23:30,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6759 to 6750. [2021-11-21 01:23:30,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6750 states, 4210 states have (on average 1.312351543942993) internal successors, (5525), 4282 states have internal predecessors, (5525), 1892 states have call successors, (1892), 653 states have call predecessors, (1892), 645 states have return successors, (1901), 1832 states have call predecessors, (1901), 1884 states have call successors, (1901) [2021-11-21 01:23:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6750 states to 6750 states and 9318 transitions. [2021-11-21 01:23:30,288 INFO L78 Accepts]: Start accepts. Automaton has 6750 states and 9318 transitions. Word has length 282 [2021-11-21 01:23:30,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:23:30,289 INFO L470 AbstractCegarLoop]: Abstraction has 6750 states and 9318 transitions. [2021-11-21 01:23:30,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-21 01:23:30,290 INFO L276 IsEmpty]: Start isEmpty. Operand 6750 states and 9318 transitions. [2021-11-21 01:23:30,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-21 01:23:30,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:23:30,301 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:23:30,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:23:30,302 INFO L402 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)] === [2021-11-21 01:23:30,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:23:30,302 INFO L85 PathProgramCache]: Analyzing trace with hash -337457781, now seen corresponding path program 1 times [2021-11-21 01:23:30,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:23:30,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784961258] [2021-11-21 01:23:30,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:23:30,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:23:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:23:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2021-11-21 01:23:30,737 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:23:30,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784961258] [2021-11-21 01:23:30,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784961258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:23:30,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:23:30,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:23:30,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287468531] [2021-11-21 01:23:30,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:23:30,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:23:30,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:23:30,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:23:30,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:23:30,741 INFO L87 Difference]: Start difference. First operand 6750 states and 9318 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-21 01:23:33,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:35,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:38,021 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:38,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:23:38,517 INFO L93 Difference]: Finished difference Result 6760 states and 9328 transitions. [2021-11-21 01:23:38,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:23:38,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 287 [2021-11-21 01:23:38,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:23:38,668 INFO L225 Difference]: With dead ends: 6760 [2021-11-21 01:23:38,668 INFO L226 Difference]: Without dead ends: 6646 [2021-11-21 01:23:38,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:23:38,673 INFO L933 BasicCegarLoop]: 1550 mSDtfsCounter, 1711 mSDsluCounter, 3579 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 4647 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:23:38,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1713 Valid, 4647 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 731 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2021-11-21 01:23:38,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6646 states. [2021-11-21 01:23:39,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6646 to 6646. [2021-11-21 01:23:39,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6646 states, 4161 states have (on average 1.3119442441720741) internal successors, (5459), 4219 states have internal predecessors, (5459), 1854 states have call successors, (1854), 633 states have call predecessors, (1854), 628 states have return successors, (1870), 1807 states have call predecessors, (1870), 1850 states have call successors, (1870) [2021-11-21 01:23:39,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6646 states to 6646 states and 9183 transitions. [2021-11-21 01:23:39,171 INFO L78 Accepts]: Start accepts. Automaton has 6646 states and 9183 transitions. Word has length 287 [2021-11-21 01:23:39,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:23:39,172 INFO L470 AbstractCegarLoop]: Abstraction has 6646 states and 9183 transitions. [2021-11-21 01:23:39,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-21 01:23:39,172 INFO L276 IsEmpty]: Start isEmpty. Operand 6646 states and 9183 transitions. [2021-11-21 01:23:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-21 01:23:39,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:23:39,185 INFO L514 BasicCegarLoop]: trace histogram [25, 20, 20, 20, 20, 20, 20, 3, 3, 3, 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] [2021-11-21 01:23:39,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:23:39,186 INFO L402 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)] === [2021-11-21 01:23:39,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:23:39,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1629937378, now seen corresponding path program 1 times [2021-11-21 01:23:39,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:23:39,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641818126] [2021-11-21 01:23:39,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:23:39,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:23:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:23:39,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1761 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1754 trivial. 0 not checked. [2021-11-21 01:23:39,451 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:23:39,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641818126] [2021-11-21 01:23:39,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641818126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:23:39,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:23:39,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:23:39,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527715529] [2021-11-21 01:23:39,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:23:39,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:23:39,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:23:39,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:23:39,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:23:39,455 INFO L87 Difference]: Start difference. First operand 6646 states and 9183 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-21 01:23:42,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:44,888 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:45,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:23:45,152 INFO L93 Difference]: Finished difference Result 14866 states and 20461 transitions. [2021-11-21 01:23:45,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:23:45,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 300 [2021-11-21 01:23:45,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:23:45,193 INFO L225 Difference]: With dead ends: 14866 [2021-11-21 01:23:45,193 INFO L226 Difference]: Without dead ends: 8502 [2021-11-21 01:23:45,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:23:45,233 INFO L933 BasicCegarLoop]: 2161 mSDtfsCounter, 757 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 3640 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:23:45,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [757 Valid, 3640 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 641 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2021-11-21 01:23:45,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8502 states. [2021-11-21 01:23:45,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8502 to 8443. [2021-11-21 01:23:45,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8443 states, 5275 states have (on average 1.303696682464455) internal successors, (6877), 5351 states have internal predecessors, (6877), 2325 states have call successors, (2325), 846 states have call predecessors, (2325), 840 states have return successors, (2343), 2260 states have call predecessors, (2343), 2321 states have call successors, (2343) [2021-11-21 01:23:45,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8443 states to 8443 states and 11545 transitions. [2021-11-21 01:23:45,970 INFO L78 Accepts]: Start accepts. Automaton has 8443 states and 11545 transitions. Word has length 300 [2021-11-21 01:23:45,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:23:45,971 INFO L470 AbstractCegarLoop]: Abstraction has 8443 states and 11545 transitions. [2021-11-21 01:23:45,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-21 01:23:45,972 INFO L276 IsEmpty]: Start isEmpty. Operand 8443 states and 11545 transitions. [2021-11-21 01:23:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2021-11-21 01:23:45,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:23:45,986 INFO L514 BasicCegarLoop]: trace histogram [25, 20, 20, 20, 20, 20, 20, 7, 7, 3, 3, 3, 2, 2, 2, 2, 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] [2021-11-21 01:23:45,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 01:23:45,987 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:23:45,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:23:45,988 INFO L85 PathProgramCache]: Analyzing trace with hash -999250466, now seen corresponding path program 1 times [2021-11-21 01:23:45,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:23:45,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290785084] [2021-11-21 01:23:45,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:23:45,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:23:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:23:46,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1829 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1822 trivial. 0 not checked. [2021-11-21 01:23:46,272 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:23:46,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290785084] [2021-11-21 01:23:46,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290785084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:23:46,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:23:46,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:23:46,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363418161] [2021-11-21 01:23:46,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:23:46,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:23:46,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:23:46,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:23:46,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:23:46,276 INFO L87 Difference]: Start difference. First operand 8443 states and 11545 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-21 01:23:51,970 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:54,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:23:56,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:56,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:23:56,925 INFO L93 Difference]: Finished difference Result 20365 states and 27898 transitions. [2021-11-21 01:23:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:23:56,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 351 [2021-11-21 01:23:56,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:23:56,994 INFO L225 Difference]: With dead ends: 20365 [2021-11-21 01:23:56,994 INFO L226 Difference]: Without dead ends: 12204 [2021-11-21 01:23:57,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:23:57,040 INFO L933 BasicCegarLoop]: 2903 mSDtfsCounter, 1615 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 4416 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:23:57,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1617 Valid, 4416 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 717 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2021-11-21 01:23:57,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12204 states. [2021-11-21 01:23:57,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12204 to 12112. [2021-11-21 01:23:57,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12112 states, 7586 states have (on average 1.3052992354336936) internal successors, (9902), 7700 states have internal predecessors, (9902), 3319 states have call successors, (3319), 1212 states have call predecessors, (3319), 1204 states have return successors, (3345), 3220 states have call predecessors, (3345), 3315 states have call successors, (3345) [2021-11-21 01:23:58,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12112 states to 12112 states and 16566 transitions. [2021-11-21 01:23:58,048 INFO L78 Accepts]: Start accepts. Automaton has 12112 states and 16566 transitions. Word has length 351 [2021-11-21 01:23:58,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:23:58,049 INFO L470 AbstractCegarLoop]: Abstraction has 12112 states and 16566 transitions. [2021-11-21 01:23:58,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-21 01:23:58,050 INFO L276 IsEmpty]: Start isEmpty. Operand 12112 states and 16566 transitions. [2021-11-21 01:23:58,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2021-11-21 01:23:58,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:23:58,072 INFO L514 BasicCegarLoop]: trace histogram [28, 20, 20, 20, 20, 20, 20, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 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] [2021-11-21 01:23:58,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 01:23:58,073 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:23:58,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:23:58,074 INFO L85 PathProgramCache]: Analyzing trace with hash -668302186, now seen corresponding path program 1 times [2021-11-21 01:23:58,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:23:58,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084699814] [2021-11-21 01:23:58,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:23:58,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:23:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:23:58,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2151 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2132 trivial. 0 not checked. [2021-11-21 01:23:58,399 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:23:58,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084699814] [2021-11-21 01:23:58,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084699814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:23:58,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:23:58,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:23:58,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011772817] [2021-11-21 01:23:58,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:23:58,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:23:58,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:23:58,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:23:58,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:23:58,404 INFO L87 Difference]: Start difference. First operand 12112 states and 16566 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2021-11-21 01:24:07,640 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:09,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:11,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:13,320 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:15,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:16,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:24:16,807 INFO L93 Difference]: Finished difference Result 27923 states and 38144 transitions. [2021-11-21 01:24:16,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:24:16,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 409 [2021-11-21 01:24:16,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:24:16,903 INFO L225 Difference]: With dead ends: 27923 [2021-11-21 01:24:16,903 INFO L226 Difference]: Without dead ends: 16093 [2021-11-21 01:24:16,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:24:16,948 INFO L933 BasicCegarLoop]: 2950 mSDtfsCounter, 1684 mSDsluCounter, 4396 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 6676 SdHoareTripleChecker+Invalid, 1894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:24:16,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1684 Valid, 6676 Invalid, 1894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1882 Invalid, 2 Unknown, 0 Unchecked, 17.4s Time] [2021-11-21 01:24:16,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16093 states. [2021-11-21 01:24:18,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16093 to 16007. [2021-11-21 01:24:18,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16007 states, 10021 states have (on average 1.3047600039916176) internal successors, (13075), 10171 states have internal predecessors, (13075), 4351 states have call successors, (4351), 1642 states have call predecessors, (4351), 1632 states have return successors, (4382), 4220 states have call predecessors, (4382), 4347 states have call successors, (4382) [2021-11-21 01:24:18,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16007 states to 16007 states and 21808 transitions. [2021-11-21 01:24:18,231 INFO L78 Accepts]: Start accepts. Automaton has 16007 states and 21808 transitions. Word has length 409 [2021-11-21 01:24:18,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:24:18,233 INFO L470 AbstractCegarLoop]: Abstraction has 16007 states and 21808 transitions. [2021-11-21 01:24:18,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2021-11-21 01:24:18,234 INFO L276 IsEmpty]: Start isEmpty. Operand 16007 states and 21808 transitions. [2021-11-21 01:24:18,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2021-11-21 01:24:18,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:24:18,260 INFO L514 BasicCegarLoop]: trace histogram [27, 20, 20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-21 01:24:18,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 01:24:18,261 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:24:18,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:24:18,262 INFO L85 PathProgramCache]: Analyzing trace with hash -461604208, now seen corresponding path program 1 times [2021-11-21 01:24:18,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:24:18,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581472971] [2021-11-21 01:24:18,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:24:18,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:24:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:24:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2775 trivial. 0 not checked. [2021-11-21 01:24:18,853 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:24:18,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581472971] [2021-11-21 01:24:18,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581472971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:24:18,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:24:18,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:24:18,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570996085] [2021-11-21 01:24:18,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:24:18,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:24:18,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:24:18,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:24:18,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:24:18,857 INFO L87 Difference]: Start difference. First operand 16007 states and 21808 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-21 01:24:26,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:28,929 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:31,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:32,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:24:32,086 INFO L93 Difference]: Finished difference Result 16021 states and 21821 transitions. [2021-11-21 01:24:32,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:24:32,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 476 [2021-11-21 01:24:32,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:24:32,206 INFO L225 Difference]: With dead ends: 16021 [2021-11-21 01:24:32,206 INFO L226 Difference]: Without dead ends: 16019 [2021-11-21 01:24:32,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:24:32,217 INFO L933 BasicCegarLoop]: 2004 mSDtfsCounter, 1489 mSDsluCounter, 6252 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 7499 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:24:32,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1492 Valid, 7499 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1037 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2021-11-21 01:24:32,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16019 states. [2021-11-21 01:24:33,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16019 to 16007. [2021-11-21 01:24:33,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16007 states, 10021 states have (on average 1.3041612613511626) internal successors, (13069), 10171 states have internal predecessors, (13069), 4351 states have call successors, (4351), 1642 states have call predecessors, (4351), 1632 states have return successors, (4382), 4220 states have call predecessors, (4382), 4347 states have call successors, (4382) [2021-11-21 01:24:33,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16007 states to 16007 states and 21802 transitions. [2021-11-21 01:24:33,666 INFO L78 Accepts]: Start accepts. Automaton has 16007 states and 21802 transitions. Word has length 476 [2021-11-21 01:24:33,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:24:33,668 INFO L470 AbstractCegarLoop]: Abstraction has 16007 states and 21802 transitions. [2021-11-21 01:24:33,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-21 01:24:33,669 INFO L276 IsEmpty]: Start isEmpty. Operand 16007 states and 21802 transitions. [2021-11-21 01:24:33,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2021-11-21 01:24:33,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:24:33,698 INFO L514 BasicCegarLoop]: trace histogram [27, 20, 20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-21 01:24:33,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-21 01:24:33,699 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:24:33,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:24:33,700 INFO L85 PathProgramCache]: Analyzing trace with hash 636847332, now seen corresponding path program 1 times [2021-11-21 01:24:33,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:24:33,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130886152] [2021-11-21 01:24:33,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:24:33,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:24:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:24:34,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2776 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 2754 trivial. 0 not checked. [2021-11-21 01:24:34,071 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:24:34,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130886152] [2021-11-21 01:24:34,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130886152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:24:34,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:24:34,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:24:34,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267182404] [2021-11-21 01:24:34,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:24:34,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:24:34,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:24:34,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:24:34,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:24:34,075 INFO L87 Difference]: Start difference. First operand 16007 states and 21802 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-21 01:24:38,320 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:41,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:42,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:24:42,177 INFO L93 Difference]: Finished difference Result 36630 states and 49605 transitions. [2021-11-21 01:24:42,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:24:42,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 486 [2021-11-21 01:24:42,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:24:42,291 INFO L225 Difference]: With dead ends: 36630 [2021-11-21 01:24:42,291 INFO L226 Difference]: Without dead ends: 20905 [2021-11-21 01:24:42,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:24:42,359 INFO L933 BasicCegarLoop]: 2389 mSDtfsCounter, 1417 mSDsluCounter, 2082 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 180 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 4152 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:24:42,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1419 Valid, 4152 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1129 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-11-21 01:24:42,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20905 states. [2021-11-21 01:24:43,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20905 to 20786. [2021-11-21 01:24:43,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20786 states, 12963 states have (on average 1.2972305793412018) internal successors, (16816), 13157 states have internal predecessors, (16816), 5566 states have call successors, (5566), 2269 states have call predecessors, (5566), 2254 states have return successors, (5604), 5391 states have call predecessors, (5604), 5562 states have call successors, (5604) [2021-11-21 01:24:43,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20786 states to 20786 states and 27986 transitions. [2021-11-21 01:24:43,967 INFO L78 Accepts]: Start accepts. Automaton has 20786 states and 27986 transitions. Word has length 486 [2021-11-21 01:24:43,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:24:43,968 INFO L470 AbstractCegarLoop]: Abstraction has 20786 states and 27986 transitions. [2021-11-21 01:24:43,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-21 01:24:43,968 INFO L276 IsEmpty]: Start isEmpty. Operand 20786 states and 27986 transitions. [2021-11-21 01:24:43,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2021-11-21 01:24:43,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:24:44,000 INFO L514 BasicCegarLoop]: trace histogram [31, 20, 20, 20, 20, 20, 20, 12, 12, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 01:24:44,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-21 01:24:44,000 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:24:44,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:24:44,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1191199598, now seen corresponding path program 1 times [2021-11-21 01:24:44,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:24:44,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359633778] [2021-11-21 01:24:44,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:24:44,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:24:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:24:44,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2393 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 2361 trivial. 0 not checked. [2021-11-21 01:24:44,311 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:24:44,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359633778] [2021-11-21 01:24:44,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359633778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:24:44,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:24:44,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:24:44,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082212824] [2021-11-21 01:24:44,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:24:44,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:24:44,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:24:44,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:24:44,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:24:44,318 INFO L87 Difference]: Start difference. First operand 20786 states and 27986 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-21 01:24:49,172 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:51,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:54,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:24:54,672 INFO L93 Difference]: Finished difference Result 46252 states and 62299 transitions. [2021-11-21 01:24:54,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:24:54,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 460 [2021-11-21 01:24:54,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:24:54,925 INFO L225 Difference]: With dead ends: 46252 [2021-11-21 01:24:54,925 INFO L226 Difference]: Without dead ends: 25748 [2021-11-21 01:24:55,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:24:55,005 INFO L933 BasicCegarLoop]: 2936 mSDtfsCounter, 1636 mSDsluCounter, 2687 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 14 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 5179 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:24:55,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1638 Valid, 5179 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1617 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2021-11-21 01:24:55,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25748 states. [2021-11-21 01:24:56,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25748 to 25631. [2021-11-21 01:24:56,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25631 states, 16010 states have (on average 1.298376014990631) internal successors, (20787), 16255 states have internal predecessors, (20787), 6835 states have call successors, (6835), 2801 states have call predecessors, (6835), 2783 states have return successors, (6882), 6613 states have call predecessors, (6882), 6831 states have call successors, (6882) [2021-11-21 01:24:56,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25631 states to 25631 states and 34504 transitions. [2021-11-21 01:24:56,994 INFO L78 Accepts]: Start accepts. Automaton has 25631 states and 34504 transitions. Word has length 460 [2021-11-21 01:24:56,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:24:56,995 INFO L470 AbstractCegarLoop]: Abstraction has 25631 states and 34504 transitions. [2021-11-21 01:24:56,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-21 01:24:56,995 INFO L276 IsEmpty]: Start isEmpty. Operand 25631 states and 34504 transitions. [2021-11-21 01:24:57,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2021-11-21 01:24:57,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:24:57,028 INFO L514 BasicCegarLoop]: trace histogram [28, 20, 20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-21 01:24:57,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-21 01:24:57,029 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:24:57,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:24:57,029 INFO L85 PathProgramCache]: Analyzing trace with hash 2076155763, now seen corresponding path program 1 times [2021-11-21 01:24:57,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:24:57,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288813591] [2021-11-21 01:24:57,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:24:57,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:24:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:24:57,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2829 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2829 trivial. 0 not checked. [2021-11-21 01:24:57,409 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:24:57,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288813591] [2021-11-21 01:24:57,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288813591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:24:57,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:24:57,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:24:57,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689421967] [2021-11-21 01:24:57,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:24:57,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:24:57,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:24:57,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:24:57,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:24:57,413 INFO L87 Difference]: Start difference. First operand 25631 states and 34504 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (49), 2 states have call predecessors, (49), 1 states have call successors, (49) [2021-11-21 01:25:00,776 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:03,356 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:05,608 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:06,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:25:06,868 INFO L93 Difference]: Finished difference Result 51030 states and 68721 transitions. [2021-11-21 01:25:06,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:25:06,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (49), 2 states have call predecessors, (49), 1 states have call successors, (49) Word has length 502 [2021-11-21 01:25:06,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:25:07,009 INFO L225 Difference]: With dead ends: 51030 [2021-11-21 01:25:07,009 INFO L226 Difference]: Without dead ends: 25681 [2021-11-21 01:25:07,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:25:07,126 INFO L933 BasicCegarLoop]: 1546 mSDtfsCounter, 1 mSDsluCounter, 5335 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6175 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:25:07,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 6175 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 959 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2021-11-21 01:25:07,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25681 states. [2021-11-21 01:25:08,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25681 to 25653. [2021-11-21 01:25:08,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25653 states, 16026 states have (on average 1.2980781230500438) internal successors, (20803), 16272 states have internal predecessors, (20803), 6835 states have call successors, (6835), 2801 states have call predecessors, (6835), 2789 states have return successors, (6893), 6618 states have call predecessors, (6893), 6831 states have call successors, (6893) [2021-11-21 01:25:08,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25653 states to 25653 states and 34531 transitions. [2021-11-21 01:25:08,956 INFO L78 Accepts]: Start accepts. Automaton has 25653 states and 34531 transitions. Word has length 502 [2021-11-21 01:25:08,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:25:08,958 INFO L470 AbstractCegarLoop]: Abstraction has 25653 states and 34531 transitions. [2021-11-21 01:25:08,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (49), 2 states have call predecessors, (49), 1 states have call successors, (49) [2021-11-21 01:25:08,958 INFO L276 IsEmpty]: Start isEmpty. Operand 25653 states and 34531 transitions. [2021-11-21 01:25:08,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2021-11-21 01:25:08,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:25:08,982 INFO L514 BasicCegarLoop]: trace histogram [28, 20, 20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-21 01:25:08,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-21 01:25:08,983 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:25:08,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:25:08,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1578405251, now seen corresponding path program 1 times [2021-11-21 01:25:08,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:25:08,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826645507] [2021-11-21 01:25:08,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:25:08,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:25:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:25:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2829 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2829 trivial. 0 not checked. [2021-11-21 01:25:09,395 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:25:09,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826645507] [2021-11-21 01:25:09,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826645507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:25:09,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:25:09,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:25:09,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506221273] [2021-11-21 01:25:09,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:25:09,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:25:09,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:25:09,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:25:09,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:25:09,399 INFO L87 Difference]: Start difference. First operand 25653 states and 34531 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 2 states have call predecessors, (50), 1 states have call successors, (50) [2021-11-21 01:25:14,234 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:16,542 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:18,762 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:19,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:25:19,886 INFO L93 Difference]: Finished difference Result 51864 states and 70064 transitions. [2021-11-21 01:25:19,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:25:19,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 2 states have call predecessors, (50), 1 states have call successors, (50) Word has length 508 [2021-11-21 01:25:19,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:25:20,023 INFO L225 Difference]: With dead ends: 51864 [2021-11-21 01:25:20,024 INFO L226 Difference]: Without dead ends: 26218 [2021-11-21 01:25:20,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:25:20,116 INFO L933 BasicCegarLoop]: 1552 mSDtfsCounter, 162 mSDsluCounter, 3440 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 41 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 4521 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:25:20,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 4521 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 778 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2021-11-21 01:25:20,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26218 states. [2021-11-21 01:25:21,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26218 to 26218. [2021-11-21 01:25:21,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26218 states, 16426 states have (on average 1.3002556921953001) internal successors, (21358), 16682 states have internal predecessors, (21358), 6990 states have call successors, (6990), 2811 states have call predecessors, (6990), 2799 states have return successors, (7057), 6773 states have call predecessors, (7057), 6986 states have call successors, (7057) [2021-11-21 01:25:21,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26218 states to 26218 states and 35405 transitions. [2021-11-21 01:25:21,682 INFO L78 Accepts]: Start accepts. Automaton has 26218 states and 35405 transitions. Word has length 508 [2021-11-21 01:25:21,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:25:21,683 INFO L470 AbstractCegarLoop]: Abstraction has 26218 states and 35405 transitions. [2021-11-21 01:25:21,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 2 states have call predecessors, (50), 1 states have call successors, (50) [2021-11-21 01:25:21,684 INFO L276 IsEmpty]: Start isEmpty. Operand 26218 states and 35405 transitions. [2021-11-21 01:25:21,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2021-11-21 01:25:21,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:25:21,708 INFO L514 BasicCegarLoop]: trace histogram [28, 20, 20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-21 01:25:21,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-21 01:25:21,708 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:25:21,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:25:21,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2052671129, now seen corresponding path program 1 times [2021-11-21 01:25:21,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:25:21,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141740713] [2021-11-21 01:25:21,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:25:21,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:25:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:25:22,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2829 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 2805 trivial. 0 not checked. [2021-11-21 01:25:22,443 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:25:22,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141740713] [2021-11-21 01:25:22,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141740713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:25:22,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:25:22,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:25:22,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304110918] [2021-11-21 01:25:22,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:25:22,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:25:22,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:25:22,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:25:22,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:25:22,448 INFO L87 Difference]: Start difference. First operand 26218 states and 35405 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-21 01:25:27,260 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:31,309 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:33,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:34,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:25:34,824 INFO L93 Difference]: Finished difference Result 73020 states and 98892 transitions. [2021-11-21 01:25:34,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:25:34,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 509 [2021-11-21 01:25:34,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:25:35,188 INFO L225 Difference]: With dead ends: 73020 [2021-11-21 01:25:35,188 INFO L226 Difference]: Without dead ends: 47084 [2021-11-21 01:25:35,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:25:35,263 INFO L933 BasicCegarLoop]: 2878 mSDtfsCounter, 1548 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 4397 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:25:35,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1550 Valid, 4397 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 712 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2021-11-21 01:25:35,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47084 states. [2021-11-21 01:25:37,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47084 to 47033. [2021-11-21 01:25:37,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47033 states, 29944 states have (on average 1.3023644135720012) internal successors, (38998), 30285 states have internal predecessors, (38998), 12171 states have call successors, (12171), 4940 states have call predecessors, (12171), 4915 states have return successors, (12311), 11896 states have call predecessors, (12311), 12167 states have call successors, (12311) [2021-11-21 01:25:38,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47033 states to 47033 states and 63480 transitions. [2021-11-21 01:25:38,161 INFO L78 Accepts]: Start accepts. Automaton has 47033 states and 63480 transitions. Word has length 509 [2021-11-21 01:25:38,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:25:38,162 INFO L470 AbstractCegarLoop]: Abstraction has 47033 states and 63480 transitions. [2021-11-21 01:25:38,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-21 01:25:38,162 INFO L276 IsEmpty]: Start isEmpty. Operand 47033 states and 63480 transitions. [2021-11-21 01:25:38,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2021-11-21 01:25:38,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:25:38,185 INFO L514 BasicCegarLoop]: trace histogram [30, 21, 21, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:25:38,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-21 01:25:38,185 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:25:38,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:25:38,186 INFO L85 PathProgramCache]: Analyzing trace with hash 331291619, now seen corresponding path program 1 times [2021-11-21 01:25:38,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:25:38,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945264501] [2021-11-21 01:25:38,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:25:38,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:25:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:25:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3034 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3034 trivial. 0 not checked. [2021-11-21 01:25:39,332 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:25:39,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945264501] [2021-11-21 01:25:39,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945264501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:25:39,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:25:39,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:25:39,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826051609] [2021-11-21 01:25:39,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:25:39,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:25:39,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:25:39,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:25:39,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:25:39,336 INFO L87 Difference]: Start difference. First operand 47033 states and 63480 transitions. Second operand has 8 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 2 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (52), 3 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-21 01:25:45,814 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:47,153 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:51,507 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:53,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:25:53,226 INFO L93 Difference]: Finished difference Result 50367 states and 67803 transitions. [2021-11-21 01:25:53,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:25:53,227 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 2 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (52), 3 states have call predecessors, (52), 2 states have call successors, (52) Word has length 532 [2021-11-21 01:25:53,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:25:53,421 INFO L225 Difference]: With dead ends: 50367 [2021-11-21 01:25:53,422 INFO L226 Difference]: Without dead ends: 50365 [2021-11-21 01:25:53,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:25:53,447 INFO L933 BasicCegarLoop]: 1761 mSDtfsCounter, 450 mSDsluCounter, 11041 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 11356 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:25:53,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 11356 Invalid, 1784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1768 Invalid, 1 Unknown, 0 Unchecked, 11.7s Time] [2021-11-21 01:25:53,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50365 states. [2021-11-21 01:25:56,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50365 to 50343. [2021-11-21 01:25:56,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50343 states, 31934 states have (on average 1.3007452871547567) internal successors, (41538), 32305 states have internal predecessors, (41538), 13031 states have call successors, (13031), 5400 states have call predecessors, (13031), 5375 states have return successors, (13191), 12736 states have call predecessors, (13191), 13027 states have call successors, (13191) [2021-11-21 01:25:56,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50343 states to 50343 states and 67760 transitions. [2021-11-21 01:25:56,580 INFO L78 Accepts]: Start accepts. Automaton has 50343 states and 67760 transitions. Word has length 532 [2021-11-21 01:25:56,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:25:56,581 INFO L470 AbstractCegarLoop]: Abstraction has 50343 states and 67760 transitions. [2021-11-21 01:25:56,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 2 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (52), 3 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-21 01:25:56,581 INFO L276 IsEmpty]: Start isEmpty. Operand 50343 states and 67760 transitions. [2021-11-21 01:25:56,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2021-11-21 01:25:56,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:25:56,617 INFO L514 BasicCegarLoop]: trace histogram [35, 20, 20, 20, 20, 20, 20, 14, 14, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 01:25:56,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-21 01:25:56,618 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:25:56,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:25:56,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1833499717, now seen corresponding path program 1 times [2021-11-21 01:25:56,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:25:56,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427058485] [2021-11-21 01:25:56,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:25:56,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:25:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:25:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2805 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 2746 trivial. 0 not checked. [2021-11-21 01:25:56,961 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:25:56,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427058485] [2021-11-21 01:25:56,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427058485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:25:56,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:25:56,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:25:56,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607448373] [2021-11-21 01:25:56,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:25:56,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:25:56,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:25:56,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:25:56,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:25:56,965 INFO L87 Difference]: Start difference. First operand 50343 states and 67760 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-21 01:26:06,179 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:08,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:26:08,911 INFO L93 Difference]: Finished difference Result 123062 states and 165756 transitions. [2021-11-21 01:26:08,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:26:08,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 511 [2021-11-21 01:26:08,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:26:09,285 INFO L225 Difference]: With dead ends: 123062 [2021-11-21 01:26:09,285 INFO L226 Difference]: Without dead ends: 73001 [2021-11-21 01:26:09,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:26:09,670 INFO L933 BasicCegarLoop]: 2062 mSDtfsCounter, 1572 mSDsluCounter, 2673 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 4299 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:26:09,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1574 Valid, 4299 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1412 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2021-11-21 01:26:09,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73001 states. [2021-11-21 01:26:13,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73001 to 72604. [2021-11-21 01:26:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72604 states, 46194 states have (on average 1.3022470450707884) internal successors, (60156), 46644 states have internal predecessors, (60156), 18648 states have call successors, (18648), 7797 states have call predecessors, (18648), 7759 states have return successors, (18891), 18315 states have call predecessors, (18891), 18644 states have call successors, (18891) [2021-11-21 01:26:14,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72604 states to 72604 states and 97695 transitions. [2021-11-21 01:26:14,044 INFO L78 Accepts]: Start accepts. Automaton has 72604 states and 97695 transitions. Word has length 511 [2021-11-21 01:26:14,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:26:14,045 INFO L470 AbstractCegarLoop]: Abstraction has 72604 states and 97695 transitions. [2021-11-21 01:26:14,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-21 01:26:14,045 INFO L276 IsEmpty]: Start isEmpty. Operand 72604 states and 97695 transitions. [2021-11-21 01:26:14,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2021-11-21 01:26:14,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:26:14,116 INFO L514 BasicCegarLoop]: trace histogram [33, 22, 22, 21, 21, 21, 21, 21, 21, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-21 01:26:14,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-21 01:26:14,117 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:26:14,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:26:14,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1859487720, now seen corresponding path program 1 times [2021-11-21 01:26:14,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:26:14,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364417995] [2021-11-21 01:26:14,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:26:14,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:26:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:26:14,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3445 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 3400 trivial. 0 not checked. [2021-11-21 01:26:14,509 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:26:14,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364417995] [2021-11-21 01:26:14,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364417995] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:26:14,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066789433] [2021-11-21 01:26:14,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:26:14,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:26:14,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc7a7ac-55db-47ad-869a-43cdae767db0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:26:14,514 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc7a7ac-55db-47ad-869a-43cdae767db0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:26:14,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc7a7ac-55db-47ad-869a-43cdae767db0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:26:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:26:16,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 4681 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:26:16,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:26:17,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3445 backedges. 292 proven. 7 refuted. 0 times theorem prover too weak. 3146 trivial. 0 not checked. [2021-11-21 01:26:17,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:26:19,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3445 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 3415 trivial. 0 not checked. [2021-11-21 01:26:19,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066789433] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 01:26:19,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:26:19,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 5 [2021-11-21 01:26:19,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282117516] [2021-11-21 01:26:19,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:26:19,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:26:19,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:26:19,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:26:19,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:26:19,592 INFO L87 Difference]: Start difference. First operand 72604 states and 97695 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-21 01:26:22,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:24,346 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:27,153 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:30,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:26:30,395 INFO L93 Difference]: Finished difference Result 155211 states and 208111 transitions. [2021-11-21 01:26:30,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:26:30,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 566 [2021-11-21 01:26:30,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted.