./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 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b846a0-96ed-4cfd-a777-24c08ccc4fda/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b846a0-96ed-4cfd-a777-24c08ccc4fda/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b846a0-96ed-4cfd-a777-24c08ccc4fda/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b846a0-96ed-4cfd-a777-24c08ccc4fda/bin/utaipan-Q6hlc19bkW/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_83b846a0-96ed-4cfd-a777-24c08ccc4fda/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b846a0-96ed-4cfd-a777-24c08ccc4fda/bin/utaipan-Q6hlc19bkW --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:38:05,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:38:05,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:38:05,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:38:05,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:38:05,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:38:05,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:38:05,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:38:05,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:38:05,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:38:05,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:38:05,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:38:05,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:38:05,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:38:05,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:38:05,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:38:05,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:38:05,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:38:05,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:38:05,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:38:05,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:38:05,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:38:05,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:38:05,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:38:05,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:38:05,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:38:05,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:38:05,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:38:05,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:38:05,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:38:05,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:38:05,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:38:05,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:38:05,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:38:05,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:38:05,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:38:05,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:38:05,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:38:05,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:38:05,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:38:05,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:38:05,831 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b846a0-96ed-4cfd-a777-24c08ccc4fda/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:38:05,852 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:38:05,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:38:05,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:38:05,856 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:38:05,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:38:05,857 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:38:05,857 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:38:05,857 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:38:05,857 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:38:05,858 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:38:05,859 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:38:05,859 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:38:05,859 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:38:05,859 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:38:05,860 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:38:05,860 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:38:05,860 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:38:05,860 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:38:05,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:38:05,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:38:05,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:38:05,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:38:05,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:38:05,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:38:05,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:38:05,863 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:38:05,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:38:05,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:38:05,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:38:05,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:38:05,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:38:05,865 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:38:05,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:38:05,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:38:05,866 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:38:05,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:38:05,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:38:05,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:38:05,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b846a0-96ed-4cfd-a777-24c08ccc4fda/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b846a0-96ed-4cfd-a777-24c08ccc4fda/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6012e8ec841b08462bbd246c354a43139de7ccb42d1c6282a50e12dbc313f31 [2022-11-23 14:38:06,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:38:06,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:38:06,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:38:06,158 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:38:06,158 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:38:06,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b846a0-96ed-4cfd-a777-24c08ccc4fda/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i [2022-11-23 14:38:09,235 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:38:09,902 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:38:09,903 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b846a0-96ed-4cfd-a777-24c08ccc4fda/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i [2022-11-23 14:38:09,960 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b846a0-96ed-4cfd-a777-24c08ccc4fda/bin/utaipan-Q6hlc19bkW/data/788549a51/36211c18c89049978f68a6faeee41aed/FLAG7594ff349 [2022-11-23 14:38:09,979 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b846a0-96ed-4cfd-a777-24c08ccc4fda/bin/utaipan-Q6hlc19bkW/data/788549a51/36211c18c89049978f68a6faeee41aed [2022-11-23 14:38:09,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:38:09,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:38:09,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:38:09,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:38:09,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:38:09,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:38:09" (1/1) ... [2022-11-23 14:38:09,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e660a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:09, skipping insertion in model container [2022-11-23 14:38:09,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:38:09" (1/1) ... [2022-11-23 14:38:10,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:38:10,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:38:12,678 WARN L237 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_83b846a0-96ed-4cfd-a777-24c08ccc4fda/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] [2022-11-23 14:38:12,684 WARN L237 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_83b846a0-96ed-4cfd-a777-24c08ccc4fda/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] [2022-11-23 14:38:12,684 WARN L237 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_83b846a0-96ed-4cfd-a777-24c08ccc4fda/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] [2022-11-23 14:38:12,685 WARN L237 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_83b846a0-96ed-4cfd-a777-24c08ccc4fda/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] [2022-11-23 14:38:12,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:38:12,818 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:38:13,238 WARN L237 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_83b846a0-96ed-4cfd-a777-24c08ccc4fda/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] [2022-11-23 14:38:13,239 WARN L237 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_83b846a0-96ed-4cfd-a777-24c08ccc4fda/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] [2022-11-23 14:38:13,239 WARN L237 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_83b846a0-96ed-4cfd-a777-24c08ccc4fda/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] [2022-11-23 14:38:13,240 WARN L237 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_83b846a0-96ed-4cfd-a777-24c08ccc4fda/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] [2022-11-23 14:38:13,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:38:13,520 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:38:13,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:13 WrapperNode [2022-11-23 14:38:13,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:38:13,522 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:38:13,522 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:38:13,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:38:13,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:13" (1/1) ... [2022-11-23 14:38:13,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:13" (1/1) ... [2022-11-23 14:38:13,853 INFO L138 Inliner]: procedures = 386, calls = 2501, calls flagged for inlining = 198, calls inlined = 148, statements flattened = 4928 [2022-11-23 14:38:13,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:38:13,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:38:13,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:38:13,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:38:13,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:13" (1/1) ... [2022-11-23 14:38:13,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:13" (1/1) ... [2022-11-23 14:38:13,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:13" (1/1) ... [2022-11-23 14:38:13,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:13" (1/1) ... [2022-11-23 14:38:14,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:13" (1/1) ... [2022-11-23 14:38:14,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:13" (1/1) ... [2022-11-23 14:38:14,093 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:13" (1/1) ... [2022-11-23 14:38:14,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:13" (1/1) ... [2022-11-23 14:38:14,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:38:14,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:38:14,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:38:14,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:38:14,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:13" (1/1) ... [2022-11-23 14:38:14,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:38:14,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b846a0-96ed-4cfd-a777-24c08ccc4fda/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:38:14,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b846a0-96ed-4cfd-a777-24c08ccc4fda/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:38:14,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b846a0-96ed-4cfd-a777-24c08ccc4fda/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:38:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-23 14:38:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-23 14:38:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 14:38:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 14:38:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-11-23 14:38:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-11-23 14:38:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:38:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:38:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 14:38:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 14:38:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_stereo_mono [2022-11-23 14:38:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_stereo_mono [2022-11-23 14:38:14,221 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 14:38:14,221 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 14:38:14,221 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_len [2022-11-23 14:38:14,221 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_len [2022-11-23 14:38:14,221 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2022-11-23 14:38:14,221 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2022-11-23 14:38:14,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 14:38:14,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 14:38:14,223 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-23 14:38:14,223 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-23 14:38:14,224 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2022-11-23 14:38:14,224 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2022-11-23 14:38:14,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 14:38:14,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 14:38:14,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-23 14:38:14,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-23 14:38:14,225 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 14:38:14,225 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 14:38:14,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:38:14,225 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2022-11-23 14:38:14,226 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2022-11-23 14:38:14,226 INFO L130 BoogieDeclarations]: Found specification of procedure st_unregister [2022-11-23 14:38:14,226 INFO L138 BoogieDeclarations]: Found implementation of procedure st_unregister [2022-11-23 14:38:14,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:38:14,226 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-23 14:38:14,226 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-23 14:38:14,226 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-23 14:38:14,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-23 14:38:14,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:38:14,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 14:38:14,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 14:38:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:38:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_fmdev [2022-11-23 14:38:14,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_fmdev [2022-11-23 14:38:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_release [2022-11-23 14:38:14,229 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_release [2022-11-23 14:38:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 14:38:14,229 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 14:38:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_fmdev [2022-11-23 14:38:14,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_fmdev [2022-11-23 14:38:14,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 14:38:14,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 14:38:14,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-23 14:38:14,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-23 14:38:14,230 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_rds_mode [2022-11-23 14:38:14,230 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_rds_mode [2022-11-23 14:38:14,231 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2022-11-23 14:38:14,231 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2022-11-23 14:38:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata [2022-11-23 14:38:14,232 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata [2022-11-23 14:38:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_rds_mode [2022-11-23 14:38:14,232 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_rds_mode [2022-11-23 14:38:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:38:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 14:38:14,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 14:38:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 14:38:14,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 14:38:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-23 14:38:14,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-23 14:38:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-11-23 14:38:14,235 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-11-23 14:38:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:38:14,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 14:38:14,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 14:38:14,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:38:14,236 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-23 14:38:14,236 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-23 14:38:14,236 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-23 14:38:14,236 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-23 14:38:14,237 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_preemph_filter [2022-11-23 14:38:14,237 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_preemph_filter [2022-11-23 14:38:14,237 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-11-23 14:38:14,237 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-11-23 14:38:14,238 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-23 14:38:14,238 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-23 14:38:14,239 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-23 14:38:14,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-23 14:38:14,239 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 14:38:14,239 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 14:38:14,239 INFO L130 BoogieDeclarations]: Found specification of procedure fm_g_volatile_ctrl [2022-11-23 14:38:14,239 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_g_volatile_ctrl [2022-11-23 14:38:14,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:38:14,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:38:14,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-23 14:38:14,240 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-23 14:38:14,240 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-23 14:38:14,241 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-23 14:38:14,241 INFO L130 BoogieDeclarations]: Found specification of procedure fm_config_rx_mute_reg [2022-11-23 14:38:14,241 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_config_rx_mute_reg [2022-11-23 14:38:14,241 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2022-11-23 14:38:14,241 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2022-11-23 14:38:14,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:38:14,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:38:14,245 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_data_mode [2022-11-23 14:38:14,246 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_data_mode [2022-11-23 14:38:14,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:38:14,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:38:14,248 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_pwr_lvl [2022-11-23 14:38:14,248 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_pwr_lvl [2022-11-23 14:38:14,248 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2022-11-23 14:38:14,249 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2022-11-23 14:38:14,249 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_prepare [2022-11-23 14:38:14,254 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_prepare [2022-11-23 14:38:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_send_cmd [2022-11-23 14:38:14,254 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_send_cmd [2022-11-23 14:38:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2022-11-23 14:38:14,255 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2022-11-23 14:38:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure fm_send_cmd [2022-11-23 14:38:14,255 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_send_cmd [2022-11-23 14:38:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-23 14:38:14,255 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-23 14:38:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:38:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:38:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call_stage [2022-11-23 14:38:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call_stage [2022-11-23 14:38:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2022-11-23 14:38:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2022-11-23 14:38:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2022-11-23 14:38:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2022-11-23 14:38:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:38:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2022-11-23 14:38:14,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2022-11-23 14:38:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:38:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_rds_cache [2022-11-23 14:38:14,257 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_rds_cache [2022-11-23 14:38:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_station_info [2022-11-23 14:38:14,257 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_station_info [2022-11-23 14:38:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_s_ctrl [2022-11-23 14:38:14,258 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_s_ctrl [2022-11-23 14:38:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:38:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-23 14:38:14,258 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-23 14:38:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2022-11-23 14:38:14,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2022-11-23 14:38:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure enable_xmit [2022-11-23 14:38:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_xmit [2022-11-23 14:38:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-23 14:38:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-23 14:38:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_volume [2022-11-23 14:38:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_volume [2022-11-23 14:38:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-23 14:38:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-23 14:38:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-23 14:38:14,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-23 14:38:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-23 14:38:14,260 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-23 14:38:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 14:38:14,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 14:38:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-23 14:38:14,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-23 14:38:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_or_killable_mutex_of_fmdev [2022-11-23 14:38:14,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_or_killable_mutex_of_fmdev [2022-11-23 14:38:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_text [2022-11-23 14:38:14,262 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_text [2022-11-23 14:38:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-11-23 14:38:14,262 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-11-23 14:38:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_release [2022-11-23 14:38:14,262 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_release [2022-11-23 14:38:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-23 14:38:14,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-23 14:38:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 14:38:14,263 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 14:38:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:38:14,263 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:38:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-23 14:38:14,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-23 14:38:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-11-23 14:38:14,265 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-11-23 14:38:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:38:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-11-23 14:38:14,265 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-11-23 14:38:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:38:14,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:38:14,266 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_open [2022-11-23 14:38:14,266 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_open [2022-11-23 14:38:14,266 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-23 14:38:14,266 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-23 14:38:14,266 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_freq [2022-11-23 14:38:14,267 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_freq [2022-11-23 14:38:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_mode [2022-11-23 14:38:14,267 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_mode [2022-11-23 14:38:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_write [2022-11-23 14:38:14,267 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_write [2022-11-23 14:38:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-23 14:38:14,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-23 14:38:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call [2022-11-23 14:38:14,268 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call [2022-11-23 14:38:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 14:38:14,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 14:38:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-23 14:38:14,268 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-23 14:38:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure fm_power_down [2022-11-23 14:38:14,268 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_power_down [2022-11-23 14:38:14,269 INFO L130 BoogieDeclarations]: Found specification of procedure fm_download_firmware [2022-11-23 14:38:14,269 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_download_firmware [2022-11-23 14:38:14,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:38:14,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 14:38:14,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 14:38:15,157 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:38:15,160 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:38:15,312 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:38:21,659 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 14:38:21,767 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:38:22,845 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:38:22,846 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:38:22,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:38:22 BoogieIcfgContainer [2022-11-23 14:38:22,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:38:22,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:38:22,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:38:22,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:38:22,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:38:09" (1/3) ... [2022-11-23 14:38:22,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2546ddab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:38:22, skipping insertion in model container [2022-11-23 14:38:22,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:13" (2/3) ... [2022-11-23 14:38:22,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2546ddab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:38:22, skipping insertion in model container [2022-11-23 14:38:22,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:38:22" (3/3) ... [2022-11-23 14:38:22,862 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i [2022-11-23 14:38:22,882 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:38:22,882 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-23 14:38:22,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:38:22,989 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@321685d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:38:22,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-23 14:38:23,005 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) [2022-11-23 14:38:23,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-23 14:38:23,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:38:23,045 INFO L195 NwaCegarLoop]: 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] [2022-11-23 14:38:23,045 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:38:23,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:38:23,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1718641867, now seen corresponding path program 1 times [2022-11-23 14:38:23,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:38:23,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245113145] [2022-11-23 14:38:23,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:23,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:38:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:38:24,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-11-23 14:38:24,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:38:24,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245113145] [2022-11-23 14:38:24,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245113145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:38:24,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:38:24,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:38:24,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347135108] [2022-11-23 14:38:24,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:38:24,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:38:24,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:38:24,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:38:24,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:38:24,205 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) [2022-11-23 14:38:28,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:38:28,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:38:28,489 INFO L93 Difference]: Finished difference Result 3836 states and 5602 transitions. [2022-11-23 14:38:28,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:38:28,494 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 [2022-11-23 14:38:28,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:38:28,540 INFO L225 Difference]: With dead ends: 3836 [2022-11-23 14:38:28,540 INFO L226 Difference]: Without dead ends: 2510 [2022-11-23 14:38:28,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:38:28,560 INFO L413 NwaCegarLoop]: 2039 mSDtfsCounter, 1791 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1793 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:38:28,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1793 Valid, 3624 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 520 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-11-23 14:38:28,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2022-11-23 14:38:28,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 2505. [2022-11-23 14:38:28,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 1564 states have (on average 1.342071611253197) internal successors, (2099), 1595 states have internal predecessors, (2099), 755 states have call successors, (755), 184 states have call predecessors, (755), 183 states have return successors, (753), 744 states have call predecessors, (753), 751 states have call successors, (753) [2022-11-23 14:38:28,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 3607 transitions. [2022-11-23 14:38:28,817 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 3607 transitions. Word has length 216 [2022-11-23 14:38:28,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:38:28,819 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 3607 transitions. [2022-11-23 14:38:28,819 INFO L496 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) [2022-11-23 14:38:28,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 3607 transitions. [2022-11-23 14:38:28,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-23 14:38:28,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:38:28,825 INFO L195 NwaCegarLoop]: 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] [2022-11-23 14:38:28,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:38:28,826 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:38:28,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:38:28,827 INFO L85 PathProgramCache]: Analyzing trace with hash -215634932, now seen corresponding path program 1 times [2022-11-23 14:38:28,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:38:28,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284908902] [2022-11-23 14:38:28,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:28,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:38:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:38:29,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-11-23 14:38:29,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:38:29,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284908902] [2022-11-23 14:38:29,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284908902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:38:29,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:38:29,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:38:29,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147767281] [2022-11-23 14:38:29,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:38:29,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:38:29,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:38:29,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:38:29,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:38:29,369 INFO L87 Difference]: Start difference. First operand 2505 states and 3607 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) [2022-11-23 14:38:32,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:38:34,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:38:34,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:38:34,909 INFO L93 Difference]: Finished difference Result 5461 states and 7736 transitions. [2022-11-23 14:38:34,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:38:34,910 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 [2022-11-23 14:38:34,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:38:34,929 INFO L225 Difference]: With dead ends: 5461 [2022-11-23 14:38:34,929 INFO L226 Difference]: Without dead ends: 2995 [2022-11-23 14:38:34,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:38:34,942 INFO L413 NwaCegarLoop]: 1998 mSDtfsCounter, 1185 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 3635 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:38:34,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1185 Valid, 3635 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-23 14:38:34,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2022-11-23 14:38:35,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 2974. [2022-11-23 14:38:35,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 1829 states have (on average 1.3121924548933843) internal successors, (2400), 1874 states have internal predecessors, (2400), 873 states have call successors, (873), 270 states have call predecessors, (873), 269 states have return successors, (871), 854 states have call predecessors, (871), 869 states have call successors, (871) [2022-11-23 14:38:35,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4144 transitions. [2022-11-23 14:38:35,112 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4144 transitions. Word has length 235 [2022-11-23 14:38:35,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:38:35,112 INFO L495 AbstractCegarLoop]: Abstraction has 2974 states and 4144 transitions. [2022-11-23 14:38:35,113 INFO L496 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) [2022-11-23 14:38:35,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4144 transitions. [2022-11-23 14:38:35,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-11-23 14:38:35,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:38:35,122 INFO L195 NwaCegarLoop]: 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] [2022-11-23 14:38:35,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:38:35,122 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:38:35,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:38:35,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1049434490, now seen corresponding path program 1 times [2022-11-23 14:38:35,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:38:35,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322443929] [2022-11-23 14:38:35,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:35,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:38:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:38:35,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2022-11-23 14:38:35,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:38:35,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322443929] [2022-11-23 14:38:35,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322443929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:38:35,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:38:35,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:38:35,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843842251] [2022-11-23 14:38:35,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:38:35,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:38:35,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:38:35,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:38:35,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:38:35,813 INFO L87 Difference]: Start difference. First operand 2974 states and 4144 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) [2022-11-23 14:38:40,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:38:42,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:38:42,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:38:42,758 INFO L93 Difference]: Finished difference Result 5212 states and 7226 transitions. [2022-11-23 14:38:42,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:38:42,759 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 [2022-11-23 14:38:42,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:38:42,773 INFO L225 Difference]: With dead ends: 5212 [2022-11-23 14:38:42,773 INFO L226 Difference]: Without dead ends: 2277 [2022-11-23 14:38:42,784 INFO L412 NwaCegarLoop]: 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 [2022-11-23 14:38:42,785 INFO L413 NwaCegarLoop]: 1410 mSDtfsCounter, 2075 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 725 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2235 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 725 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:38:42,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2235 Valid, 1926 Invalid, 1934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [725 Valid, 1208 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-23 14:38:42,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2022-11-23 14:38:42,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 2271. [2022-11-23 14:38:42,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 1407 states have (on average 1.3020611229566454) internal successors, (1832), 1422 states have internal predecessors, (1832), 650 states have call successors, (650), 212 states have call predecessors, (650), 211 states have return successors, (646), 641 states have call predecessors, (646), 646 states have call successors, (646) [2022-11-23 14:38:42,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 3128 transitions. [2022-11-23 14:38:42,922 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 3128 transitions. Word has length 254 [2022-11-23 14:38:42,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:38:42,923 INFO L495 AbstractCegarLoop]: Abstraction has 2271 states and 3128 transitions. [2022-11-23 14:38:42,923 INFO L496 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) [2022-11-23 14:38:42,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 3128 transitions. [2022-11-23 14:38:42,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-11-23 14:38:42,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:38:42,930 INFO L195 NwaCegarLoop]: 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] [2022-11-23 14:38:42,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:38:42,930 INFO L420 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)] === [2022-11-23 14:38:42,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:38:42,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1499728055, now seen corresponding path program 1 times [2022-11-23 14:38:42,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:38:42,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289532857] [2022-11-23 14:38:42,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:42,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:38:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:38:44,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1537 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1537 trivial. 0 not checked. [2022-11-23 14:38:44,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:38:44,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289532857] [2022-11-23 14:38:44,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289532857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:38:44,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:38:44,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:38:44,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844364626] [2022-11-23 14:38:44,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:38:44,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:38:44,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:38:44,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:38:44,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:38:44,232 INFO L87 Difference]: Start difference. First operand 2271 states and 3128 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) [2022-11-23 14:38:48,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:38:48,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:38:48,842 INFO L93 Difference]: Finished difference Result 2287 states and 3140 transitions. [2022-11-23 14:38:48,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:38:48,843 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 [2022-11-23 14:38:48,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:38:48,856 INFO L225 Difference]: With dead ends: 2287 [2022-11-23 14:38:48,856 INFO L226 Difference]: Without dead ends: 2285 [2022-11-23 14:38:48,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:38:48,859 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1716 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 4650 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:38:48,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1723 Valid, 4650 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 722 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-11-23 14:38:48,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2022-11-23 14:38:49,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2283. [2022-11-23 14:38:49,011 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) [2022-11-23 14:38:49,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 3135 transitions. [2022-11-23 14:38:49,022 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 3135 transitions. Word has length 262 [2022-11-23 14:38:49,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:38:49,026 INFO L495 AbstractCegarLoop]: Abstraction has 2283 states and 3135 transitions. [2022-11-23 14:38:49,026 INFO L496 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) [2022-11-23 14:38:49,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 3135 transitions. [2022-11-23 14:38:49,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-23 14:38:49,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:38:49,033 INFO L195 NwaCegarLoop]: 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] [2022-11-23 14:38:49,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:38:49,033 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:38:49,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:38:49,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1829415516, now seen corresponding path program 1 times [2022-11-23 14:38:49,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:38:49,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066668959] [2022-11-23 14:38:49,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:49,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:38:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:38:50,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1538 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1536 trivial. 0 not checked. [2022-11-23 14:38:50,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:38:50,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066668959] [2022-11-23 14:38:50,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066668959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:38:50,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:38:50,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:38:50,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127076736] [2022-11-23 14:38:50,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:38:50,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:38:50,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:38:50,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:38:50,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:38:50,048 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) [2022-11-23 14:38:53,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:38:55,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:38:57,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:38:58,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:38:58,051 INFO L93 Difference]: Finished difference Result 2289 states and 3140 transitions. [2022-11-23 14:38:58,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:38:58,052 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 [2022-11-23 14:38:58,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:38:58,064 INFO L225 Difference]: With dead ends: 2289 [2022-11-23 14:38:58,064 INFO L226 Difference]: Without dead ends: 2287 [2022-11-23 14:38:58,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:38:58,066 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 1721 mSDsluCounter, 3091 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1725 SdHoareTripleChecker+Valid, 4643 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:38:58,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1725 Valid, 4643 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 716 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2022-11-23 14:38:58,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2022-11-23 14:38:58,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 2287. [2022-11-23 14:38:58,226 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) [2022-11-23 14:38:58,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3138 transitions. [2022-11-23 14:38:58,236 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3138 transitions. Word has length 266 [2022-11-23 14:38:58,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:38:58,237 INFO L495 AbstractCegarLoop]: Abstraction has 2287 states and 3138 transitions. [2022-11-23 14:38:58,237 INFO L496 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) [2022-11-23 14:38:58,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3138 transitions. [2022-11-23 14:38:58,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-11-23 14:38:58,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:38:58,244 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 3, 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] [2022-11-23 14:38:58,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:38:58,244 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:38:58,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:38:58,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1870071606, now seen corresponding path program 1 times [2022-11-23 14:38:58,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:38:58,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669470320] [2022-11-23 14:38:58,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:58,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:38:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:38:59,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1544 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2022-11-23 14:38:59,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:38:59,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669470320] [2022-11-23 14:38:59,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669470320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:38:59,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:38:59,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:38:59,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040037853] [2022-11-23 14:38:59,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:38:59,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:38:59,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:38:59,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:38:59,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:38:59,242 INFO L87 Difference]: Start difference. First operand 2287 states and 3138 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, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-23 14:39:01,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:04,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:06,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:07,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:07,152 INFO L93 Difference]: Finished difference Result 2293 states and 3143 transitions. [2022-11-23 14:39:07,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:39:07,153 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, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 271 [2022-11-23 14:39:07,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:07,167 INFO L225 Difference]: With dead ends: 2293 [2022-11-23 14:39:07,167 INFO L226 Difference]: Without dead ends: 2291 [2022-11-23 14:39:07,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:39:07,170 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 1721 mSDsluCounter, 3091 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 4643 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:07,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1724 Valid, 4643 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 716 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2022-11-23 14:39:07,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2022-11-23 14:39:07,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2291. [2022-11-23 14:39:07,425 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) [2022-11-23 14:39:07,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3141 transitions. [2022-11-23 14:39:07,438 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3141 transitions. Word has length 271 [2022-11-23 14:39:07,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:07,440 INFO L495 AbstractCegarLoop]: Abstraction has 2291 states and 3141 transitions. [2022-11-23 14:39:07,441 INFO L496 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, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-23 14:39:07,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3141 transitions. [2022-11-23 14:39:07,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-11-23 14:39:07,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:07,448 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:39:07,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:39:07,449 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:39:07,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:07,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1046636836, now seen corresponding path program 1 times [2022-11-23 14:39:07,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:07,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100554108] [2022-11-23 14:39:07,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:07,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1548 trivial. 0 not checked. [2022-11-23 14:39:08,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:08,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100554108] [2022-11-23 14:39:08,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100554108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:08,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:39:08,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:39:08,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349591240] [2022-11-23 14:39:08,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:08,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:39:08,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:08,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:39:08,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:39:08,427 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) [2022-11-23 14:39:12,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:12,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:12,742 INFO L93 Difference]: Finished difference Result 2299 states and 3149 transitions. [2022-11-23 14:39:12,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:39:12,743 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 276 [2022-11-23 14:39:12,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:12,759 INFO L225 Difference]: With dead ends: 2299 [2022-11-23 14:39:12,759 INFO L226 Difference]: Without dead ends: 2297 [2022-11-23 14:39:12,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:39:12,762 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 1711 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 4653 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:12,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1715 Valid, 4653 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 722 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-11-23 14:39:12,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2022-11-23 14:39:12,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 2295. [2022-11-23 14:39:12,940 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) [2022-11-23 14:39:12,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 3144 transitions. [2022-11-23 14:39:12,952 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 3144 transitions. Word has length 276 [2022-11-23 14:39:12,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:12,953 INFO L495 AbstractCegarLoop]: Abstraction has 2295 states and 3144 transitions. [2022-11-23 14:39:12,953 INFO L496 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) [2022-11-23 14:39:12,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 3144 transitions. [2022-11-23 14:39:12,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-11-23 14:39:12,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:12,962 INFO L195 NwaCegarLoop]: 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] [2022-11-23 14:39:12,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:39:12,962 INFO L420 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)] === [2022-11-23 14:39:12,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:12,963 INFO L85 PathProgramCache]: Analyzing trace with hash -2053346323, now seen corresponding path program 1 times [2022-11-23 14:39:12,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:12,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384004135] [2022-11-23 14:39:12,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:12,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1599 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1599 trivial. 0 not checked. [2022-11-23 14:39:13,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:13,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384004135] [2022-11-23 14:39:13,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384004135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:13,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:39:13,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:39:13,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996288044] [2022-11-23 14:39:13,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:13,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:39:13,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:13,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:39:13,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:13,319 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) [2022-11-23 14:39:16,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:17,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:17,218 INFO L93 Difference]: Finished difference Result 5938 states and 8166 transitions. [2022-11-23 14:39:17,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:39:17,219 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 [2022-11-23 14:39:17,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:17,242 INFO L225 Difference]: With dead ends: 5938 [2022-11-23 14:39:17,242 INFO L226 Difference]: Without dead ends: 3700 [2022-11-23 14:39:17,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:17,255 INFO L413 NwaCegarLoop]: 1921 mSDtfsCounter, 1608 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 3450 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:17,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 3450 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 510 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-11-23 14:39:17,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3700 states. [2022-11-23 14:39:17,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3700 to 3656. [2022-11-23 14:39:17,584 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) [2022-11-23 14:39:17,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 5027 transitions. [2022-11-23 14:39:17,608 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 5027 transitions. Word has length 287 [2022-11-23 14:39:17,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:17,609 INFO L495 AbstractCegarLoop]: Abstraction has 3656 states and 5027 transitions. [2022-11-23 14:39:17,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (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) [2022-11-23 14:39:17,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 5027 transitions. [2022-11-23 14:39:17,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-11-23 14:39:17,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:17,617 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:39:17,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:39:17,618 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:39:17,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:17,618 INFO L85 PathProgramCache]: Analyzing trace with hash -644871222, now seen corresponding path program 1 times [2022-11-23 14:39:17,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:17,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923481341] [2022-11-23 14:39:17,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:17,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-11-23 14:39:18,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:18,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923481341] [2022-11-23 14:39:18,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923481341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:18,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:39:18,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:39:18,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453721649] [2022-11-23 14:39:18,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:18,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:39:18,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:18,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:39:18,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:39:18,595 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) [2022-11-23 14:39:23,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:25,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:27,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:29,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:31,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:33,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:35,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:35,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:35,722 INFO L93 Difference]: Finished difference Result 6763 states and 9329 transitions. [2022-11-23 14:39:35,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:39:35,723 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 281 [2022-11-23 14:39:35,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:35,767 INFO L225 Difference]: With dead ends: 6763 [2022-11-23 14:39:35,767 INFO L226 Difference]: Without dead ends: 6759 [2022-11-23 14:39:35,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:39:35,772 INFO L413 NwaCegarLoop]: 1998 mSDtfsCounter, 1583 mSDsluCounter, 5478 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 7476 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:35,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1584 Valid, 7476 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1015 Invalid, 4 Unknown, 0 Unchecked, 16.6s Time] [2022-11-23 14:39:35,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6759 states. [2022-11-23 14:39:36,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6759 to 6750. [2022-11-23 14:39:36,313 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) [2022-11-23 14:39:36,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6750 states to 6750 states and 9318 transitions. [2022-11-23 14:39:36,348 INFO L78 Accepts]: Start accepts. Automaton has 6750 states and 9318 transitions. Word has length 281 [2022-11-23 14:39:36,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:36,349 INFO L495 AbstractCegarLoop]: Abstraction has 6750 states and 9318 transitions. [2022-11-23 14:39:36,350 INFO L496 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) [2022-11-23 14:39:36,350 INFO L276 IsEmpty]: Start isEmpty. Operand 6750 states and 9318 transitions. [2022-11-23 14:39:36,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-11-23 14:39:36,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:36,356 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 6, 5, 5, 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] [2022-11-23 14:39:36,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:39:36,356 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:39:36,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:36,357 INFO L85 PathProgramCache]: Analyzing trace with hash -805785482, now seen corresponding path program 1 times [2022-11-23 14:39:36,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:36,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213929185] [2022-11-23 14:39:36,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:36,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1598 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1588 trivial. 0 not checked. [2022-11-23 14:39:37,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:37,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213929185] [2022-11-23 14:39:37,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213929185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:37,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:39:37,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:39:37,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68728616] [2022-11-23 14:39:37,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:37,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:39:37,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:37,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:39:37,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:39:37,401 INFO L87 Difference]: Start difference. First operand 6750 states and 9318 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, (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) [2022-11-23 14:39:42,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:44,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:44,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:44,807 INFO L93 Difference]: Finished difference Result 6756 states and 9323 transitions. [2022-11-23 14:39:44,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:39:44,808 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, (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 286 [2022-11-23 14:39:44,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:44,849 INFO L225 Difference]: With dead ends: 6756 [2022-11-23 14:39:44,849 INFO L226 Difference]: Without dead ends: 6642 [2022-11-23 14:39:44,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:39:44,856 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 1721 mSDsluCounter, 3093 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 4646 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:44,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1721 Valid, 4646 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 713 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2022-11-23 14:39:44,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6642 states. [2022-11-23 14:39:45,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6642 to 6642. [2022-11-23 14:39:45,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6642 states, 4159 states have (on average 1.3120942534263045) internal successors, (5457), 4215 states have internal predecessors, (5457), 1854 states have call successors, (1854), 633 states have call predecessors, (1854), 626 states have return successors, (1867), 1807 states have call predecessors, (1867), 1850 states have call successors, (1867) [2022-11-23 14:39:45,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6642 states to 6642 states and 9178 transitions. [2022-11-23 14:39:45,535 INFO L78 Accepts]: Start accepts. Automaton has 6642 states and 9178 transitions. Word has length 286 [2022-11-23 14:39:45,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:45,536 INFO L495 AbstractCegarLoop]: Abstraction has 6642 states and 9178 transitions. [2022-11-23 14:39:45,536 INFO L496 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, (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) [2022-11-23 14:39:45,537 INFO L276 IsEmpty]: Start isEmpty. Operand 6642 states and 9178 transitions. [2022-11-23 14:39:45,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-11-23 14:39:45,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:45,545 INFO L195 NwaCegarLoop]: 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] [2022-11-23 14:39:45,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:39:45,546 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:39:45,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:45,547 INFO L85 PathProgramCache]: Analyzing trace with hash -192710576, now seen corresponding path program 1 times [2022-11-23 14:39:45,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:45,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366412976] [2022-11-23 14:39:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:45,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1761 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1754 trivial. 0 not checked. [2022-11-23 14:39:45,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:45,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366412976] [2022-11-23 14:39:45,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366412976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:45,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:39:45,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:39:45,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417381954] [2022-11-23 14:39:45,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:45,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:39:45,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:45,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:39:45,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:45,927 INFO L87 Difference]: Start difference. First operand 6642 states and 9178 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) [2022-11-23 14:39:49,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:51,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:52,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:52,023 INFO L93 Difference]: Finished difference Result 14858 states and 20451 transitions. [2022-11-23 14:39:52,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:39:52,024 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 [2022-11-23 14:39:52,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:52,062 INFO L225 Difference]: With dead ends: 14858 [2022-11-23 14:39:52,062 INFO L226 Difference]: Without dead ends: 8498 [2022-11-23 14:39:52,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:52,094 INFO L413 NwaCegarLoop]: 2136 mSDtfsCounter, 757 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 3618 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:52,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 3618 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 627 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-11-23 14:39:52,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8498 states. [2022-11-23 14:39:52,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8498 to 8439. [2022-11-23 14:39:52,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8439 states, 5273 states have (on average 1.3038118717997345) internal successors, (6875), 5347 states have internal predecessors, (6875), 2325 states have call successors, (2325), 846 states have call predecessors, (2325), 838 states have return successors, (2340), 2260 states have call predecessors, (2340), 2321 states have call successors, (2340) [2022-11-23 14:39:52,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8439 states to 8439 states and 11540 transitions. [2022-11-23 14:39:52,889 INFO L78 Accepts]: Start accepts. Automaton has 8439 states and 11540 transitions. Word has length 300 [2022-11-23 14:39:52,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:52,890 INFO L495 AbstractCegarLoop]: Abstraction has 8439 states and 11540 transitions. [2022-11-23 14:39:52,890 INFO L496 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) [2022-11-23 14:39:52,890 INFO L276 IsEmpty]: Start isEmpty. Operand 8439 states and 11540 transitions. [2022-11-23 14:39:52,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2022-11-23 14:39:52,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:52,900 INFO L195 NwaCegarLoop]: 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] [2022-11-23 14:39:52,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 14:39:52,901 INFO L420 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)] === [2022-11-23 14:39:52,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:52,901 INFO L85 PathProgramCache]: Analyzing trace with hash -460209206, now seen corresponding path program 1 times [2022-11-23 14:39:52,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:52,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640486973] [2022-11-23 14:39:52,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:52,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:53,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1829 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1822 trivial. 0 not checked. [2022-11-23 14:39:53,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:53,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640486973] [2022-11-23 14:39:53,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640486973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:53,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:39:53,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:39:53,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693806843] [2022-11-23 14:39:53,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:53,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:39:53,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:53,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:39:53,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:53,268 INFO L87 Difference]: Start difference. First operand 8439 states and 11540 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) [2022-11-23 14:39:57,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:59,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:01,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:01,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:01,543 INFO L93 Difference]: Finished difference Result 20357 states and 27888 transitions. [2022-11-23 14:40:01,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:40:01,544 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 [2022-11-23 14:40:01,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:01,612 INFO L225 Difference]: With dead ends: 20357 [2022-11-23 14:40:01,612 INFO L226 Difference]: Without dead ends: 12200 [2022-11-23 14:40:01,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:40:01,652 INFO L413 NwaCegarLoop]: 2909 mSDtfsCounter, 1615 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 4425 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:01,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 4425 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 710 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2022-11-23 14:40:01,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12200 states. [2022-11-23 14:40:02,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12200 to 12108. [2022-11-23 14:40:02,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12108 states, 7584 states have (on average 1.3053797468354431) internal successors, (9900), 7696 states have internal predecessors, (9900), 3319 states have call successors, (3319), 1212 states have call predecessors, (3319), 1202 states have return successors, (3342), 3220 states have call predecessors, (3342), 3315 states have call successors, (3342) [2022-11-23 14:40:02,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12108 states to 12108 states and 16561 transitions. [2022-11-23 14:40:02,921 INFO L78 Accepts]: Start accepts. Automaton has 12108 states and 16561 transitions. Word has length 351 [2022-11-23 14:40:02,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:40:02,922 INFO L495 AbstractCegarLoop]: Abstraction has 12108 states and 16561 transitions. [2022-11-23 14:40:02,922 INFO L496 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) [2022-11-23 14:40:02,923 INFO L276 IsEmpty]: Start isEmpty. Operand 12108 states and 16561 transitions. [2022-11-23 14:40:02,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-11-23 14:40:02,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:02,940 INFO L195 NwaCegarLoop]: 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] [2022-11-23 14:40:02,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 14:40:02,941 INFO L420 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)] === [2022-11-23 14:40:02,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:02,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1880652537, now seen corresponding path program 1 times [2022-11-23 14:40:02,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:02,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068018762] [2022-11-23 14:40:02,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:02,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:03,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2151 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2132 trivial. 0 not checked. [2022-11-23 14:40:03,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:40:03,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068018762] [2022-11-23 14:40:03,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068018762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:40:03,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:40:03,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:40:03,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435850885] [2022-11-23 14:40:03,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:40:03,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:40:03,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:40:03,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:40:03,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:40:03,532 INFO L87 Difference]: Start difference. First operand 12108 states and 16561 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) [2022-11-23 14:40:08,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:10,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:14,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:15,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:15,111 INFO L93 Difference]: Finished difference Result 27885 states and 38106 transitions. [2022-11-23 14:40:15,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:40:15,112 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 [2022-11-23 14:40:15,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:15,203 INFO L225 Difference]: With dead ends: 27885 [2022-11-23 14:40:15,203 INFO L226 Difference]: Without dead ends: 16059 [2022-11-23 14:40:15,331 INFO L412 NwaCegarLoop]: 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 [2022-11-23 14:40:15,332 INFO L413 NwaCegarLoop]: 2947 mSDtfsCounter, 1674 mSDsluCounter, 3734 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1676 SdHoareTripleChecker+Valid, 6681 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:15,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1676 Valid, 6681 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1858 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2022-11-23 14:40:15,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16059 states. [2022-11-23 14:40:16,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16059 to 15967. [2022-11-23 14:40:16,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15967 states, 10003 states have (on average 1.3053084074777568) internal successors, (13057), 10153 states have internal predecessors, (13057), 4341 states have call successors, (4341), 1632 states have call predecessors, (4341), 1620 states have return successors, (4372), 4208 states have call predecessors, (4372), 4337 states have call successors, (4372) [2022-11-23 14:40:16,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15967 states to 15967 states and 21770 transitions. [2022-11-23 14:40:16,610 INFO L78 Accepts]: Start accepts. Automaton has 15967 states and 21770 transitions. Word has length 409 [2022-11-23 14:40:16,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:40:16,612 INFO L495 AbstractCegarLoop]: Abstraction has 15967 states and 21770 transitions. [2022-11-23 14:40:16,612 INFO L496 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) [2022-11-23 14:40:16,612 INFO L276 IsEmpty]: Start isEmpty. Operand 15967 states and 21770 transitions. [2022-11-23 14:40:16,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-11-23 14:40:16,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:16,632 INFO L195 NwaCegarLoop]: 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] [2022-11-23 14:40:16,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 14:40:16,632 INFO L420 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)] === [2022-11-23 14:40:16,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:16,633 INFO L85 PathProgramCache]: Analyzing trace with hash 376666883, now seen corresponding path program 1 times [2022-11-23 14:40:16,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:16,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798727878] [2022-11-23 14:40:16,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:16,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:18,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2775 trivial. 0 not checked. [2022-11-23 14:40:18,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:40:18,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798727878] [2022-11-23 14:40:18,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798727878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:40:18,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:40:18,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:40:18,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951195561] [2022-11-23 14:40:18,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:40:18,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:40:18,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:40:18,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:40:18,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:40:18,747 INFO L87 Difference]: Start difference. First operand 15967 states and 21770 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) [2022-11-23 14:40:25,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:26,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:26,079 INFO L93 Difference]: Finished difference Result 15981 states and 21783 transitions. [2022-11-23 14:40:26,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:40:26,080 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 [2022-11-23 14:40:26,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:26,165 INFO L225 Difference]: With dead ends: 15981 [2022-11-23 14:40:26,165 INFO L226 Difference]: Without dead ends: 15979 [2022-11-23 14:40:26,176 INFO L412 NwaCegarLoop]: 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 [2022-11-23 14:40:26,177 INFO L413 NwaCegarLoop]: 2008 mSDtfsCounter, 1489 mSDsluCounter, 5506 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 7514 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:26,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 7514 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1023 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-11-23 14:40:26,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15979 states. [2022-11-23 14:40:27,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15979 to 15969. [2022-11-23 14:40:27,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15969 states, 10004 states have (on average 1.3046781287485005) internal successors, (13052), 10155 states have internal predecessors, (13052), 4341 states have call successors, (4341), 1632 states have call predecessors, (4341), 1621 states have return successors, (4373), 4208 states have call predecessors, (4373), 4337 states have call successors, (4373) [2022-11-23 14:40:27,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15969 states to 15969 states and 21766 transitions. [2022-11-23 14:40:27,608 INFO L78 Accepts]: Start accepts. Automaton has 15969 states and 21766 transitions. Word has length 476 [2022-11-23 14:40:27,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:40:27,610 INFO L495 AbstractCegarLoop]: Abstraction has 15969 states and 21766 transitions. [2022-11-23 14:40:27,610 INFO L496 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) [2022-11-23 14:40:27,610 INFO L276 IsEmpty]: Start isEmpty. Operand 15969 states and 21766 transitions. [2022-11-23 14:40:27,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-11-23 14:40:27,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:27,631 INFO L195 NwaCegarLoop]: 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] [2022-11-23 14:40:27,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 14:40:27,632 INFO L420 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)] === [2022-11-23 14:40:27,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:27,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1138203117, now seen corresponding path program 1 times [2022-11-23 14:40:27,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:27,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262026524] [2022-11-23 14:40:27,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:27,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:28,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2776 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 2754 trivial. 0 not checked. [2022-11-23 14:40:28,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:40:28,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262026524] [2022-11-23 14:40:28,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262026524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:40:28,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:40:28,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:40:28,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036114981] [2022-11-23 14:40:28,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:40:28,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:40:28,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:40:28,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:40:28,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:40:28,198 INFO L87 Difference]: Start difference. First operand 15969 states and 21766 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) [2022-11-23 14:40:34,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:35,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:35,284 INFO L93 Difference]: Finished difference Result 36549 states and 49528 transitions. [2022-11-23 14:40:35,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:40:35,285 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 [2022-11-23 14:40:35,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:35,527 INFO L225 Difference]: With dead ends: 36549 [2022-11-23 14:40:35,527 INFO L226 Difference]: Without dead ends: 20862 [2022-11-23 14:40:35,580 INFO L412 NwaCegarLoop]: 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 [2022-11-23 14:40:35,581 INFO L413 NwaCegarLoop]: 2395 mSDtfsCounter, 1223 mSDsluCounter, 3231 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 5626 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:35,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 5626 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1386 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-11-23 14:40:35,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20862 states. [2022-11-23 14:40:37,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20862 to 20748. [2022-11-23 14:40:37,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20748 states, 12946 states have (on average 1.2976208867603893) internal successors, (16799), 13141 states have internal predecessors, (16799), 5556 states have call successors, (5556), 2259 states have call predecessors, (5556), 2243 states have return successors, (5595), 5379 states have call predecessors, (5595), 5552 states have call successors, (5595) [2022-11-23 14:40:37,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20748 states to 20748 states and 27950 transitions. [2022-11-23 14:40:37,486 INFO L78 Accepts]: Start accepts. Automaton has 20748 states and 27950 transitions. Word has length 486 [2022-11-23 14:40:37,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:40:37,487 INFO L495 AbstractCegarLoop]: Abstraction has 20748 states and 27950 transitions. [2022-11-23 14:40:37,488 INFO L496 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) [2022-11-23 14:40:37,488 INFO L276 IsEmpty]: Start isEmpty. Operand 20748 states and 27950 transitions. [2022-11-23 14:40:37,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2022-11-23 14:40:37,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:37,511 INFO L195 NwaCegarLoop]: 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] [2022-11-23 14:40:37,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 14:40:37,512 INFO L420 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)] === [2022-11-23 14:40:37,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:37,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1111936562, now seen corresponding path program 1 times [2022-11-23 14:40:37,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:37,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757480308] [2022-11-23 14:40:37,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:37,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:38,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2393 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 2361 trivial. 0 not checked. [2022-11-23 14:40:38,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:40:38,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757480308] [2022-11-23 14:40:38,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757480308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:40:38,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:40:38,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:40:38,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099288717] [2022-11-23 14:40:38,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:40:38,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:40:38,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:40:38,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:40:38,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:40:38,039 INFO L87 Difference]: Start difference. First operand 20748 states and 27950 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) [2022-11-23 14:40:41,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:43,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:49,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:49,214 INFO L93 Difference]: Finished difference Result 46204 states and 62253 transitions. [2022-11-23 14:40:49,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:40:49,215 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 [2022-11-23 14:40:49,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:49,372 INFO L225 Difference]: With dead ends: 46204 [2022-11-23 14:40:49,372 INFO L226 Difference]: Without dead ends: 25738 [2022-11-23 14:40:49,597 INFO L412 NwaCegarLoop]: 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 [2022-11-23 14:40:49,597 INFO L413 NwaCegarLoop]: 2951 mSDtfsCounter, 1647 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 5201 SdHoareTripleChecker+Invalid, 1635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:49,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1647 Valid, 5201 Invalid, 1635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1620 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2022-11-23 14:40:49,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25738 states. [2022-11-23 14:40:51,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25738 to 25631. [2022-11-23 14:40:51,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25631 states, 16011 states have (on average 1.29835737930173) internal successors, (20788), 16253 states have internal predecessors, (20788), 6835 states have call successors, (6835), 2801 states have call predecessors, (6835), 2782 states have return successors, (6881), 6615 states have call predecessors, (6881), 6831 states have call successors, (6881) [2022-11-23 14:40:51,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25631 states to 25631 states and 34504 transitions. [2022-11-23 14:40:51,291 INFO L78 Accepts]: Start accepts. Automaton has 25631 states and 34504 transitions. Word has length 460 [2022-11-23 14:40:51,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:40:51,293 INFO L495 AbstractCegarLoop]: Abstraction has 25631 states and 34504 transitions. [2022-11-23 14:40:51,293 INFO L496 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) [2022-11-23 14:40:51,293 INFO L276 IsEmpty]: Start isEmpty. Operand 25631 states and 34504 transitions. [2022-11-23 14:40:51,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2022-11-23 14:40:51,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:51,321 INFO L195 NwaCegarLoop]: 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] [2022-11-23 14:40:51,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 14:40:51,321 INFO L420 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)] === [2022-11-23 14:40:51,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:51,322 INFO L85 PathProgramCache]: Analyzing trace with hash -985744535, now seen corresponding path program 1 times [2022-11-23 14:40:51,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:51,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194840623] [2022-11-23 14:40:51,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:51,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:52,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2829 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2829 trivial. 0 not checked. [2022-11-23 14:40:52,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:40:52,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194840623] [2022-11-23 14:40:52,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194840623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:40:52,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:40:52,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:40:52,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081023729] [2022-11-23 14:40:52,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:40:52,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:40:52,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:40:52,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:40:52,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:40:52,243 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) [2022-11-23 14:40:57,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:58,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:58,615 INFO L93 Difference]: Finished difference Result 51030 states and 68721 transitions. [2022-11-23 14:40:58,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:40:58,615 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 [2022-11-23 14:40:58,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:58,778 INFO L225 Difference]: With dead ends: 51030 [2022-11-23 14:40:58,779 INFO L226 Difference]: Without dead ends: 25681 [2022-11-23 14:40:58,894 INFO L412 NwaCegarLoop]: 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 [2022-11-23 14:40:58,895 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1 mSDsluCounter, 4636 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6185 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:58,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6185 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 953 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-23 14:40:58,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25681 states. [2022-11-23 14:41:00,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25681 to 25655. [2022-11-23 14:41:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25655 states, 16028 states have (on average 1.2980409283753431) internal successors, (20805), 16272 states have internal predecessors, (20805), 6835 states have call successors, (6835), 2801 states have call predecessors, (6835), 2789 states have return successors, (6893), 6620 states have call predecessors, (6893), 6831 states have call successors, (6893) [2022-11-23 14:41:00,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25655 states to 25655 states and 34533 transitions. [2022-11-23 14:41:00,791 INFO L78 Accepts]: Start accepts. Automaton has 25655 states and 34533 transitions. Word has length 502 [2022-11-23 14:41:00,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:00,792 INFO L495 AbstractCegarLoop]: Abstraction has 25655 states and 34533 transitions. [2022-11-23 14:41:00,793 INFO L496 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) [2022-11-23 14:41:00,793 INFO L276 IsEmpty]: Start isEmpty. Operand 25655 states and 34533 transitions. [2022-11-23 14:41:00,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-11-23 14:41:00,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:00,817 INFO L195 NwaCegarLoop]: 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] [2022-11-23 14:41:00,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 14:41:00,818 INFO L420 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)] === [2022-11-23 14:41:00,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:00,818 INFO L85 PathProgramCache]: Analyzing trace with hash -429386552, now seen corresponding path program 1 times [2022-11-23 14:41:00,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:00,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234391635] [2022-11-23 14:41:00,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:00,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:01,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2829 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 2805 trivial. 0 not checked. [2022-11-23 14:41:01,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:01,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234391635] [2022-11-23 14:41:01,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234391635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:01,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:01,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:41:01,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537521518] [2022-11-23 14:41:01,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:01,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:41:01,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:01,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:41:01,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:01,672 INFO L87 Difference]: Start difference. First operand 25655 states and 34533 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2022-11-23 14:41:07,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:10,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:10,745 INFO L93 Difference]: Finished difference Result 71387 states and 96326 transitions. [2022-11-23 14:41:10,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:41:10,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 508 [2022-11-23 14:41:10,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:10,958 INFO L225 Difference]: With dead ends: 71387 [2022-11-23 14:41:10,958 INFO L226 Difference]: Without dead ends: 46014 [2022-11-23 14:41:11,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:11,048 INFO L413 NwaCegarLoop]: 2893 mSDtfsCounter, 1558 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 4415 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:11,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 4415 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-23 14:41:11,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46014 states. [2022-11-23 14:41:14,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46014 to 45985. [2022-11-23 14:41:15,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45985 states, 29183 states have (on average 1.2996264948771545) internal successors, (37927), 29499 states have internal predecessors, (37927), 11881 states have call successors, (11881), 4940 states have call predecessors, (11881), 4918 states have return successors, (12001), 11614 states have call predecessors, (12001), 11877 states have call successors, (12001) [2022-11-23 14:41:15,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45985 states to 45985 states and 61809 transitions. [2022-11-23 14:41:15,203 INFO L78 Accepts]: Start accepts. Automaton has 45985 states and 61809 transitions. Word has length 508 [2022-11-23 14:41:15,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:15,204 INFO L495 AbstractCegarLoop]: Abstraction has 45985 states and 61809 transitions. [2022-11-23 14:41:15,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2022-11-23 14:41:15,204 INFO L276 IsEmpty]: Start isEmpty. Operand 45985 states and 61809 transitions. [2022-11-23 14:41:15,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2022-11-23 14:41:15,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:15,230 INFO L195 NwaCegarLoop]: 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] [2022-11-23 14:41:15,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 14:41:15,230 INFO L420 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)] === [2022-11-23 14:41:15,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:15,231 INFO L85 PathProgramCache]: Analyzing trace with hash 640949207, now seen corresponding path program 1 times [2022-11-23 14:41:15,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:15,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206098977] [2022-11-23 14:41:15,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:15,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:16,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3034 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3034 trivial. 0 not checked. [2022-11-23 14:41:16,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:16,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206098977] [2022-11-23 14:41:16,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206098977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:16,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:16,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:41:16,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947848767] [2022-11-23 14:41:16,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:16,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:41:16,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:16,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:41:16,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:41:16,979 INFO L87 Difference]: Start difference. First operand 45985 states and 61809 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (52), 2 states have call predecessors, (52), 1 states have call successors, (52) [2022-11-23 14:41:20,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:24,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:26,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:28,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:28,306 INFO L93 Difference]: Finished difference Result 93368 states and 125984 transitions. [2022-11-23 14:41:28,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:41:28,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (52), 2 states have call predecessors, (52), 1 states have call successors, (52) Word has length 531 [2022-11-23 14:41:28,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:28,581 INFO L225 Difference]: With dead ends: 93368 [2022-11-23 14:41:28,582 INFO L226 Difference]: Without dead ends: 47115 [2022-11-23 14:41:28,747 INFO L412 NwaCegarLoop]: 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 [2022-11-23 14:41:28,748 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 147 mSDsluCounter, 2988 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 41 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 4565 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:28,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 4565 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 772 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2022-11-23 14:41:28,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47115 states. [2022-11-23 14:41:32,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47115 to 47115. [2022-11-23 14:41:32,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47115 states, 29983 states have (on average 1.3019711169662809) internal successors, (39037), 30319 states have internal predecessors, (39037), 12191 states have call successors, (12191), 4960 states have call predecessors, (12191), 4938 states have return successors, (12329), 11924 states have call predecessors, (12329), 12187 states have call successors, (12329) [2022-11-23 14:41:33,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47115 states to 47115 states and 63557 transitions. [2022-11-23 14:41:33,132 INFO L78 Accepts]: Start accepts. Automaton has 47115 states and 63557 transitions. Word has length 531 [2022-11-23 14:41:33,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:33,133 INFO L495 AbstractCegarLoop]: Abstraction has 47115 states and 63557 transitions. [2022-11-23 14:41:33,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (52), 2 states have call predecessors, (52), 1 states have call successors, (52) [2022-11-23 14:41:33,134 INFO L276 IsEmpty]: Start isEmpty. Operand 47115 states and 63557 transitions. [2022-11-23 14:41:33,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2022-11-23 14:41:33,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:33,155 INFO L195 NwaCegarLoop]: 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] [2022-11-23 14:41:33,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-23 14:41:33,155 INFO L420 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)] === [2022-11-23 14:41:33,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:33,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1424063915, now seen corresponding path program 1 times [2022-11-23 14:41:33,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:33,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144565747] [2022-11-23 14:41:33,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:33,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:35,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3034 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3034 trivial. 0 not checked. [2022-11-23 14:41:35,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:35,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144565747] [2022-11-23 14:41:35,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144565747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:35,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:35,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:41:35,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941212179] [2022-11-23 14:41:35,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:35,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:41:35,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:35,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:41:35,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:41:35,696 INFO L87 Difference]: Start difference. First operand 47115 states and 63557 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) [2022-11-23 14:41:43,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:45,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []