./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 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-5e519f3 [2022-11-03 02:49:07,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:49:07,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:49:07,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:49:07,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:49:07,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:49:07,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:49:07,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:49:07,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:49:07,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:49:07,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:49:07,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:49:07,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:49:07,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:49:07,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:49:07,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:49:07,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:49:07,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:49:07,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:49:07,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:49:07,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:49:07,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:49:07,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:49:07,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:49:07,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:49:07,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:49:07,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:49:07,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:49:07,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:49:07,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:49:07,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:49:07,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:49:07,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:49:07,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:49:07,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:49:07,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:49:07,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:49:07,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:49:07,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:49:07,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:49:07,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:49:07,152 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:49:07,198 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:49:07,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:49:07,199 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:49:07,199 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:49:07,200 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:49:07,201 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:49:07,201 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:49:07,201 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:49:07,201 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:49:07,202 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:49:07,203 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:49:07,203 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:49:07,203 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:49:07,204 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:49:07,204 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:49:07,204 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:49:07,205 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:49:07,205 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:49:07,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:49:07,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:49:07,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:49:07,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:49:07,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:49:07,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:49:07,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:49:07,209 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:49:07,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:49:07,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:49:07,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:49:07,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:49:07,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:49:07,211 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:49:07,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:49:07,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:49:07,212 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:49:07,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:49:07,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:49:07,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:49:07,213 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_d4463292-f13c-4972-bd6b-f9e29493c203/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6012e8ec841b08462bbd246c354a43139de7ccb42d1c6282a50e12dbc313f31 [2022-11-03 02:49:07,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:49:07,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:49:07,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:49:07,526 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:49:07,527 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:49:07,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i [2022-11-03 02:49:07,630 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/bin/utaipan-7li7fVZpFI/data/5edf80476/60c100fa5d384ff89c97fc3ff9f016e8/FLAGf35d2be11 [2022-11-03 02:49:08,587 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:49:08,588 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i [2022-11-03 02:49:08,664 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/bin/utaipan-7li7fVZpFI/data/5edf80476/60c100fa5d384ff89c97fc3ff9f016e8/FLAGf35d2be11 [2022-11-03 02:49:08,960 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/bin/utaipan-7li7fVZpFI/data/5edf80476/60c100fa5d384ff89c97fc3ff9f016e8 [2022-11-03 02:49:08,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:49:08,967 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:49:08,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:49:08,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:49:08,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:49:08,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:49:08" (1/1) ... [2022-11-03 02:49:08,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62882cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:08, skipping insertion in model container [2022-11-03 02:49:08,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:49:08" (1/1) ... [2022-11-03 02:49:08,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:49:09,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:49:11,892 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/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] [2022-11-03 02:49:11,895 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/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] [2022-11-03 02:49:11,896 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/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] [2022-11-03 02:49:11,903 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/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] [2022-11-03 02:49:11,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:49:11,994 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:49:12,380 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/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] [2022-11-03 02:49:12,381 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/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] [2022-11-03 02:49:12,381 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/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] [2022-11-03 02:49:12,381 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/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] [2022-11-03 02:49:12,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:49:12,637 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:49:12,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:12 WrapperNode [2022-11-03 02:49:12,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:49:12,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:49:12,639 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:49:12,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:49:12,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:12" (1/1) ... [2022-11-03 02:49:12,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:12" (1/1) ... [2022-11-03 02:49:12,950 INFO L138 Inliner]: procedures = 386, calls = 2493, calls flagged for inlining = 198, calls inlined = 148, statements flattened = 4944 [2022-11-03 02:49:12,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:49:12,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:49:12,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:49:12,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:49:12,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:12" (1/1) ... [2022-11-03 02:49:12,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:12" (1/1) ... [2022-11-03 02:49:13,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:12" (1/1) ... [2022-11-03 02:49:13,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:12" (1/1) ... [2022-11-03 02:49:13,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:12" (1/1) ... [2022-11-03 02:49:13,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:12" (1/1) ... [2022-11-03 02:49:13,266 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:12" (1/1) ... [2022-11-03 02:49:13,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:12" (1/1) ... [2022-11-03 02:49:13,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:49:13,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:49:13,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:49:13,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:49:13,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:12" (1/1) ... [2022-11-03 02:49:13,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:49:13,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:49:13,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:49:13,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4463292-f13c-4972-bd6b-f9e29493c203/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:49:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 02:49:13,419 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 02:49:13,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:49:13,420 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:49:13,420 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-11-03 02:49:13,420 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-11-03 02:49:13,420 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:49:13,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:49:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 02:49:13,421 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 02:49:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_stereo_mono [2022-11-03 02:49:13,421 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_stereo_mono [2022-11-03 02:49:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:49:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:49:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_len [2022-11-03 02:49:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_len [2022-11-03 02:49:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2022-11-03 02:49:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2022-11-03 02:49:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:49:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:49:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:49:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:49:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2022-11-03 02:49:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2022-11-03 02:49:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:49:13,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:49:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-03 02:49:13,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-03 02:49:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 02:49:13,425 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 02:49:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:49:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2022-11-03 02:49:13,426 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2022-11-03 02:49:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure st_unregister [2022-11-03 02:49:13,426 INFO L138 BoogieDeclarations]: Found implementation of procedure st_unregister [2022-11-03 02:49:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:49:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-03 02:49:13,427 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-03 02:49:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:49:13,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:49:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:49:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:49:13,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:49:13,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:49:13,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_fmdev [2022-11-03 02:49:13,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_fmdev [2022-11-03 02:49:13,430 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_release [2022-11-03 02:49:13,431 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_release [2022-11-03 02:49:13,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:49:13,431 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:49:13,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_fmdev [2022-11-03 02:49:13,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_fmdev [2022-11-03 02:49:13,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:49:13,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:49:13,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 02:49:13,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 02:49:13,433 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_rds_mode [2022-11-03 02:49:13,433 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_rds_mode [2022-11-03 02:49:13,434 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2022-11-03 02:49:13,434 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2022-11-03 02:49:13,434 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata [2022-11-03 02:49:13,434 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata [2022-11-03 02:49:13,434 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_rds_mode [2022-11-03 02:49:13,436 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_rds_mode [2022-11-03 02:49:13,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:49:13,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 02:49:13,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 02:49:13,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 02:49:13,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 02:49:13,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-03 02:49:13,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-03 02:49:13,438 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-11-03 02:49:13,438 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-11-03 02:49:13,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:49:13,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:49:13,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:49:13,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:49:13,440 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-03 02:49:13,440 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-03 02:49:13,440 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-03 02:49:13,440 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-03 02:49:13,440 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_preemph_filter [2022-11-03 02:49:13,441 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_preemph_filter [2022-11-03 02:49:13,442 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-11-03 02:49:13,442 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-11-03 02:49:13,442 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 02:49:13,443 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 02:49:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-03 02:49:13,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-03 02:49:13,444 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 02:49:13,444 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 02:49:13,444 INFO L130 BoogieDeclarations]: Found specification of procedure fm_g_volatile_ctrl [2022-11-03 02:49:13,444 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_g_volatile_ctrl [2022-11-03 02:49:13,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:49:13,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:49:13,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-03 02:49:13,445 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-03 02:49:13,445 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 02:49:13,446 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 02:49:13,446 INFO L130 BoogieDeclarations]: Found specification of procedure fm_config_rx_mute_reg [2022-11-03 02:49:13,446 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_config_rx_mute_reg [2022-11-03 02:49:13,446 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2022-11-03 02:49:13,446 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2022-11-03 02:49:13,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:49:13,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:49:13,451 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_data_mode [2022-11-03 02:49:13,451 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_data_mode [2022-11-03 02:49:13,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:49:13,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:49:13,452 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_pwr_lvl [2022-11-03 02:49:13,453 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_pwr_lvl [2022-11-03 02:49:13,453 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2022-11-03 02:49:13,453 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2022-11-03 02:49:13,453 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_prepare [2022-11-03 02:49:13,459 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_prepare [2022-11-03 02:49:13,459 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_send_cmd [2022-11-03 02:49:13,460 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_send_cmd [2022-11-03 02:49:13,460 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2022-11-03 02:49:13,460 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2022-11-03 02:49:13,460 INFO L130 BoogieDeclarations]: Found specification of procedure fm_send_cmd [2022-11-03 02:49:13,460 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_send_cmd [2022-11-03 02:49:13,461 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 02:49:13,461 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 02:49:13,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:49:13,461 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:49:13,461 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call_stage [2022-11-03 02:49:13,461 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call_stage [2022-11-03 02:49:13,462 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2022-11-03 02:49:13,462 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2022-11-03 02:49:13,462 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2022-11-03 02:49:13,462 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2022-11-03 02:49:13,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:49:13,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2022-11-03 02:49:13,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2022-11-03 02:49:13,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:49:13,463 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_rds_cache [2022-11-03 02:49:13,463 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_rds_cache [2022-11-03 02:49:13,463 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_station_info [2022-11-03 02:49:13,463 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_station_info [2022-11-03 02:49:13,464 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_s_ctrl [2022-11-03 02:49:13,464 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_s_ctrl [2022-11-03 02:49:13,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:49:13,464 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-03 02:49:13,464 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-03 02:49:13,464 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2022-11-03 02:49:13,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2022-11-03 02:49:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure enable_xmit [2022-11-03 02:49:13,465 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_xmit [2022-11-03 02:49:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-03 02:49:13,465 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-03 02:49:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_volume [2022-11-03 02:49:13,466 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_volume [2022-11-03 02:49:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 02:49:13,466 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 02:49:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-03 02:49:13,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-03 02:49:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 02:49:13,467 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 02:49:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:49:13,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:49:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 02:49:13,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 02:49:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_or_killable_mutex_of_fmdev [2022-11-03 02:49:13,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_or_killable_mutex_of_fmdev [2022-11-03 02:49:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_text [2022-11-03 02:49:13,468 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_text [2022-11-03 02:49:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-11-03 02:49:13,469 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-11-03 02:49:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_release [2022-11-03 02:49:13,469 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_release [2022-11-03 02:49:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-03 02:49:13,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-03 02:49:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:49:13,470 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:49:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:49:13,470 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:49:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-03 02:49:13,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-03 02:49:13,471 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-11-03 02:49:13,471 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-11-03 02:49:13,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:49:13,471 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-11-03 02:49:13,471 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-11-03 02:49:13,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:49:13,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:49:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_open [2022-11-03 02:49:13,472 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_open [2022-11-03 02:49:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 02:49:13,472 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 02:49:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_freq [2022-11-03 02:49:13,473 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_freq [2022-11-03 02:49:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_mode [2022-11-03 02:49:13,473 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_mode [2022-11-03 02:49:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_write [2022-11-03 02:49:13,473 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_write [2022-11-03 02:49:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 02:49:13,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 02:49:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call [2022-11-03 02:49:13,474 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call [2022-11-03 02:49:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:49:13,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:49:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 02:49:13,475 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 02:49:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure fm_power_down [2022-11-03 02:49:13,475 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_power_down [2022-11-03 02:49:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure fm_download_firmware [2022-11-03 02:49:13,475 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_download_firmware [2022-11-03 02:49:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:49:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:49:13,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:49:14,233 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:49:14,246 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:49:14,453 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:49:18,510 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 02:49:18,669 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:49:19,729 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:49:19,729 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:49:19,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:49:19 BoogieIcfgContainer [2022-11-03 02:49:19,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:49:19,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:49:19,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:49:19,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:49:19,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:49:08" (1/3) ... [2022-11-03 02:49:19,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e4feccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:49:19, skipping insertion in model container [2022-11-03 02:49:19,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:12" (2/3) ... [2022-11-03 02:49:19,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e4feccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:49:19, skipping insertion in model container [2022-11-03 02:49:19,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:49:19" (3/3) ... [2022-11-03 02:49:19,743 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i [2022-11-03 02:49:19,763 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:49:19,763 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 02:49:19,871 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:49:19,880 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;@1ac749c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:49:19,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 02:49:19,894 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) [2022-11-03 02:49:19,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-03 02:49:19,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:19,940 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] [2022-11-03 02:49:19,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:49:19,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:19,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1690399408, now seen corresponding path program 1 times [2022-11-03 02:49:19,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:49:19,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261307878] [2022-11-03 02:49:19,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:19,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:49:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:21,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-11-03 02:49:21,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:49:21,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261307878] [2022-11-03 02:49:21,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261307878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:21,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:49:21,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:49:21,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602351515] [2022-11-03 02:49:21,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:21,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:49:21,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:49:21,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:49:21,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:49:21,181 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) [2022-11-03 02:49:25,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:49:27,385 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 [] [2022-11-03 02:49:27,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:49:27,529 INFO L93 Difference]: Finished difference Result 3841 states and 5609 transitions. [2022-11-03 02:49:27,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:49:27,545 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 [2022-11-03 02:49:27,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:49:27,627 INFO L225 Difference]: With dead ends: 3841 [2022-11-03 02:49:27,642 INFO L226 Difference]: Without dead ends: 2515 [2022-11-03 02:49:27,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:49:27,662 INFO L413 NwaCegarLoop]: 2040 mSDtfsCounter, 1801 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1801 SdHoareTripleChecker+Valid, 3622 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:49:27,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1801 Valid, 3622 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 526 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-11-03 02:49:27,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2022-11-03 02:49:27,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2511. [2022-11-03 02:49:27,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 1566 states have (on average 1.3416347381864624) internal successors, (2101), 1596 states have internal predecessors, (2101), 759 states have call successors, (759), 184 states have call predecessors, (759), 183 states have return successors, (755), 749 states have call predecessors, (755), 755 states have call successors, (755) [2022-11-03 02:49:27,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3615 transitions. [2022-11-03 02:49:27,934 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3615 transitions. Word has length 216 [2022-11-03 02:49:27,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:49:27,940 INFO L495 AbstractCegarLoop]: Abstraction has 2511 states and 3615 transitions. [2022-11-03 02:49:27,940 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) [2022-11-03 02:49:27,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3615 transitions. [2022-11-03 02:49:27,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-03 02:49:27,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:27,952 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] [2022-11-03 02:49:27,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:49:27,953 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:49:27,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:27,954 INFO L85 PathProgramCache]: Analyzing trace with hash 422409988, now seen corresponding path program 1 times [2022-11-03 02:49:27,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:49:27,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106412568] [2022-11-03 02:49:27,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:27,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:49:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:28,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-11-03 02:49:28,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:49:28,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106412568] [2022-11-03 02:49:28,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106412568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:28,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:49:28,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:49:28,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627268808] [2022-11-03 02:49:28,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:28,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:49:28,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:49:28,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:49:28,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:49:28,709 INFO L87 Difference]: Start difference. First operand 2511 states and 3615 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) [2022-11-03 02:49:33,850 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 [] [2022-11-03 02:49:34,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:49:34,153 INFO L93 Difference]: Finished difference Result 5474 states and 7750 transitions. [2022-11-03 02:49:34,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:49:34,154 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 [2022-11-03 02:49:34,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:49:34,194 INFO L225 Difference]: With dead ends: 5474 [2022-11-03 02:49:34,194 INFO L226 Difference]: Without dead ends: 3002 [2022-11-03 02:49:34,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:49:34,215 INFO L413 NwaCegarLoop]: 1989 mSDtfsCounter, 1173 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 3623 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:49:34,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 3623 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 567 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-11-03 02:49:34,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2022-11-03 02:49:34,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 2978. [2022-11-03 02:49:34,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2978 states, 1831 states have (on average 1.3118514472965592) internal successors, (2402), 1876 states have internal predecessors, (2402), 873 states have call successors, (873), 272 states have call predecessors, (873), 271 states have return successors, (871), 854 states have call predecessors, (871), 869 states have call successors, (871) [2022-11-03 02:49:34,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 4146 transitions. [2022-11-03 02:49:34,446 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 4146 transitions. Word has length 235 [2022-11-03 02:49:34,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:49:34,448 INFO L495 AbstractCegarLoop]: Abstraction has 2978 states and 4146 transitions. [2022-11-03 02:49:34,448 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) [2022-11-03 02:49:34,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 4146 transitions. [2022-11-03 02:49:34,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-11-03 02:49:34,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:34,455 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] [2022-11-03 02:49:34,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:49:34,456 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:49:34,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:34,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1423016720, now seen corresponding path program 1 times [2022-11-03 02:49:34,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:49:34,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271656542] [2022-11-03 02:49:34,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:34,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:49:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:35,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2022-11-03 02:49:35,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:49:35,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271656542] [2022-11-03 02:49:35,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271656542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:35,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:49:35,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:49:35,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972586971] [2022-11-03 02:49:35,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:35,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:49:35,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:49:35,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:49:35,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:49:35,231 INFO L87 Difference]: Start difference. First operand 2978 states and 4146 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 02:49:37,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:49:40,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:49:42,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:49:42,016 INFO L93 Difference]: Finished difference Result 5216 states and 7228 transitions. [2022-11-03 02:49:42,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:49:42,017 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 [2022-11-03 02:49:42,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:49:42,032 INFO L225 Difference]: With dead ends: 5216 [2022-11-03 02:49:42,032 INFO L226 Difference]: Without dead ends: 2277 [2022-11-03 02:49:42,046 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 [2022-11-03 02:49:42,047 INFO L413 NwaCegarLoop]: 1407 mSDtfsCounter, 2037 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2197 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:49:42,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2197 Valid, 1895 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-03 02:49:42,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2022-11-03 02:49:42,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 2271. [2022-11-03 02:49:42,173 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) [2022-11-03 02:49:42,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 3128 transitions. [2022-11-03 02:49:42,187 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 3128 transitions. Word has length 254 [2022-11-03 02:49:42,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:49:42,188 INFO L495 AbstractCegarLoop]: Abstraction has 2271 states and 3128 transitions. [2022-11-03 02:49:42,189 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) [2022-11-03 02:49:42,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 3128 transitions. [2022-11-03 02:49:42,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 02:49:42,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:42,195 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 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] [2022-11-03 02:49:42,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:49:42,196 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)] === [2022-11-03 02:49:42,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:42,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1090217396, now seen corresponding path program 1 times [2022-11-03 02:49:42,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:49:42,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634531802] [2022-11-03 02:49:42,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:42,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:49:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:43,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1536 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1536 trivial. 0 not checked. [2022-11-03 02:49:43,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:49:43,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634531802] [2022-11-03 02:49:43,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634531802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:43,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:49:43,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:49:43,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426976541] [2022-11-03 02:49:43,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:43,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:49:43,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:49:43,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:49:43,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:49:43,494 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) [2022-11-03 02:49:45,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:49:49,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:49:49,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:49:49,902 INFO L93 Difference]: Finished difference Result 2287 states and 3140 transitions. [2022-11-03 02:49:49,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:49:49,903 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 261 [2022-11-03 02:49:49,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:49:49,917 INFO L225 Difference]: With dead ends: 2287 [2022-11-03 02:49:49,917 INFO L226 Difference]: Without dead ends: 2285 [2022-11-03 02:49:49,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:49:49,923 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 1716 mSDsluCounter, 3575 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 4641 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:49:49,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1723 Valid, 4641 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 731 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-11-03 02:49:49,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2022-11-03 02:49:50,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2283. [2022-11-03 02:49:50,069 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) [2022-11-03 02:49:50,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 3135 transitions. [2022-11-03 02:49:50,080 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 3135 transitions. Word has length 261 [2022-11-03 02:49:50,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:49:50,084 INFO L495 AbstractCegarLoop]: Abstraction has 2283 states and 3135 transitions. [2022-11-03 02:49:50,085 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) [2022-11-03 02:49:50,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 3135 transitions. [2022-11-03 02:49:50,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-03 02:49:50,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:50,091 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 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] [2022-11-03 02:49:50,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:49:50,092 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:49:50,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:50,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2025814503, now seen corresponding path program 1 times [2022-11-03 02:49:50,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:49:50,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959105081] [2022-11-03 02:49:50,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:50,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:49:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:51,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1548 trivial. 0 not checked. [2022-11-03 02:49:51,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:49:51,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959105081] [2022-11-03 02:49:51,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959105081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:51,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:49:51,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:49:51,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229625499] [2022-11-03 02:49:51,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:51,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:49:51,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:49:51,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:49:51,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:49:51,155 INFO L87 Difference]: Start difference. First operand 2283 states and 3135 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, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 02:49:56,503 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 [] [2022-11-03 02:49:56,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:49:56,910 INFO L93 Difference]: Finished difference Result 2291 states and 3143 transitions. [2022-11-03 02:49:56,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:49:56,912 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, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 266 [2022-11-03 02:49:56,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:49:56,931 INFO L225 Difference]: With dead ends: 2291 [2022-11-03 02:49:56,931 INFO L226 Difference]: Without dead ends: 2289 [2022-11-03 02:49:56,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:49:56,935 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1711 mSDsluCounter, 3575 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 4644 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:49:56,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1717 Valid, 4644 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 731 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-11-03 02:49:56,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2022-11-03 02:49:57,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2287. [2022-11-03 02:49:57,135 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) [2022-11-03 02:49:57,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3138 transitions. [2022-11-03 02:49:57,148 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3138 transitions. Word has length 266 [2022-11-03 02:49:57,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:49:57,149 INFO L495 AbstractCegarLoop]: Abstraction has 2287 states and 3138 transitions. [2022-11-03 02:49:57,149 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, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 02:49:57,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3138 transitions. [2022-11-03 02:49:57,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-03 02:49:57,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:57,157 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:49:57,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:49:57,157 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:49:57,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:57,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1449014032, now seen corresponding path program 1 times [2022-11-03 02:49:57,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:49:57,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481157080] [2022-11-03 02:49:57,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:57,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:49:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1541 trivial. 0 not checked. [2022-11-03 02:49:58,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:49:58,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481157080] [2022-11-03 02:49:58,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481157080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:58,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:49:58,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:49:58,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117992536] [2022-11-03 02:49:58,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:58,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:49:58,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:49:58,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:49:58,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:49:58,276 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) [2022-11-03 02:50:01,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:03,723 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 [] [2022-11-03 02:50:04,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:04,183 INFO L93 Difference]: Finished difference Result 2295 states and 3146 transitions. [2022-11-03 02:50:04,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:50:04,184 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 272 [2022-11-03 02:50:04,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:04,199 INFO L225 Difference]: With dead ends: 2295 [2022-11-03 02:50:04,199 INFO L226 Difference]: Without dead ends: 2293 [2022-11-03 02:50:04,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:50:04,202 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1711 mSDsluCounter, 3575 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 4644 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:04,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1716 Valid, 4644 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 731 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-03 02:50:04,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states. [2022-11-03 02:50:04,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 2291. [2022-11-03 02:50:04,362 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) [2022-11-03 02:50:04,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3141 transitions. [2022-11-03 02:50:04,374 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3141 transitions. Word has length 272 [2022-11-03 02:50:04,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:04,375 INFO L495 AbstractCegarLoop]: Abstraction has 2291 states and 3141 transitions. [2022-11-03 02:50:04,375 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) [2022-11-03 02:50:04,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3141 transitions. [2022-11-03 02:50:04,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-11-03 02:50:04,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:04,382 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 4, 3, 3, 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] [2022-11-03 02:50:04,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:50:04,383 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:50:04,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:04,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1496384377, now seen corresponding path program 1 times [2022-11-03 02:50:04,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:04,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254705083] [2022-11-03 02:50:04,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:04,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:05,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1566 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-11-03 02:50:05,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:05,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254705083] [2022-11-03 02:50:05,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254705083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:05,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:50:05,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:50:05,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013238195] [2022-11-03 02:50:05,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:05,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:50:05,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:05,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:50:05,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:50:05,545 INFO L87 Difference]: Start difference. First operand 2291 states and 3141 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, (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) [2022-11-03 02:50:10,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:50:13,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:13,116 INFO L93 Difference]: Finished difference Result 2297 states and 3146 transitions. [2022-11-03 02:50:13,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:50:13,117 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, (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 276 [2022-11-03 02:50:13,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:13,131 INFO L225 Difference]: With dead ends: 2297 [2022-11-03 02:50:13,131 INFO L226 Difference]: Without dead ends: 2295 [2022-11-03 02:50:13,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:50:13,135 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1721 mSDsluCounter, 3561 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 4634 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:13,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1723 Valid, 4634 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 726 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-03 02:50:13,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2022-11-03 02:50:13,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 2295. [2022-11-03 02:50:13,307 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) [2022-11-03 02:50:13,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 3144 transitions. [2022-11-03 02:50:13,318 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 3144 transitions. Word has length 276 [2022-11-03 02:50:13,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:13,319 INFO L495 AbstractCegarLoop]: Abstraction has 2295 states and 3144 transitions. [2022-11-03 02:50:13,319 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, (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) [2022-11-03 02:50:13,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 3144 transitions. [2022-11-03 02:50:13,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-11-03 02:50:13,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:13,327 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] [2022-11-03 02:50:13,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:50:13,327 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)] === [2022-11-03 02:50:13,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:13,328 INFO L85 PathProgramCache]: Analyzing trace with hash 664796076, now seen corresponding path program 1 times [2022-11-03 02:50:13,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:13,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848287659] [2022-11-03 02:50:13,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:13,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1599 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1599 trivial. 0 not checked. [2022-11-03 02:50:13,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:13,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848287659] [2022-11-03 02:50:13,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848287659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:13,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:50:13,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:50:13,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249229360] [2022-11-03 02:50:13,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:13,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:50:13,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:13,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:50:13,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:50:13,662 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) [2022-11-03 02:50:19,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:20,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:20,099 INFO L93 Difference]: Finished difference Result 5951 states and 8177 transitions. [2022-11-03 02:50:20,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:50:20,100 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 [2022-11-03 02:50:20,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:20,121 INFO L225 Difference]: With dead ends: 5951 [2022-11-03 02:50:20,122 INFO L226 Difference]: Without dead ends: 3713 [2022-11-03 02:50:20,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:50:20,134 INFO L413 NwaCegarLoop]: 1922 mSDtfsCounter, 1618 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 3448 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:20,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1618 Valid, 3448 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-03 02:50:20,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2022-11-03 02:50:20,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3674. [2022-11-03 02:50:20,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3674 states, 2300 states have (on average 1.3065217391304347) internal successors, (3005), 2332 states have internal predecessors, (3005), 1021 states have call successors, (1021), 351 states have call predecessors, (1021), 350 states have return successors, (1017), 1000 states have call predecessors, (1017), 1017 states have call successors, (1017) [2022-11-03 02:50:20,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 5043 transitions. [2022-11-03 02:50:20,445 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 5043 transitions. Word has length 287 [2022-11-03 02:50:20,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:20,446 INFO L495 AbstractCegarLoop]: Abstraction has 3674 states and 5043 transitions. [2022-11-03 02:50:20,446 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) [2022-11-03 02:50:20,446 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 5043 transitions. [2022-11-03 02:50:20,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-11-03 02:50:20,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:20,455 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] [2022-11-03 02:50:20,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:50:20,455 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:50:20,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:20,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1388660108, now seen corresponding path program 1 times [2022-11-03 02:50:20,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:20,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894095876] [2022-11-03 02:50:20,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:20,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:21,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-11-03 02:50:21,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:21,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894095876] [2022-11-03 02:50:21,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894095876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:21,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:50:21,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:50:21,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562687925] [2022-11-03 02:50:21,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:21,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:50:21,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:21,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:50:21,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:50:21,430 INFO L87 Difference]: Start difference. First operand 3674 states and 5043 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) [2022-11-03 02:50:29,944 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 [] [2022-11-03 02:50:31,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:31,366 INFO L93 Difference]: Finished difference Result 6773 states and 9338 transitions. [2022-11-03 02:50:31,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:50:31,367 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 [2022-11-03 02:50:31,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:31,402 INFO L225 Difference]: With dead ends: 6773 [2022-11-03 02:50:31,402 INFO L226 Difference]: Without dead ends: 6769 [2022-11-03 02:50:31,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:50:31,407 INFO L413 NwaCegarLoop]: 1985 mSDtfsCounter, 1573 mSDsluCounter, 6198 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 7434 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:31,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 7434 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1027 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2022-11-03 02:50:31,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6769 states. [2022-11-03 02:50:31,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6769 to 6750. [2022-11-03 02:50:31,909 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, (1900), 1832 states have call predecessors, (1900), 1884 states have call successors, (1900) [2022-11-03 02:50:31,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6750 states to 6750 states and 9317 transitions. [2022-11-03 02:50:31,942 INFO L78 Accepts]: Start accepts. Automaton has 6750 states and 9317 transitions. Word has length 281 [2022-11-03 02:50:31,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:31,942 INFO L495 AbstractCegarLoop]: Abstraction has 6750 states and 9317 transitions. [2022-11-03 02:50:31,943 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) [2022-11-03 02:50:31,943 INFO L276 IsEmpty]: Start isEmpty. Operand 6750 states and 9317 transitions. [2022-11-03 02:50:31,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-11-03 02:50:31,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:31,951 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:50:31,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:50:31,952 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:50:31,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:31,952 INFO L85 PathProgramCache]: Analyzing trace with hash -337457781, now seen corresponding path program 1 times [2022-11-03 02:50:31,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:31,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650627689] [2022-11-03 02:50:31,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:31,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2022-11-03 02:50:32,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:32,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650627689] [2022-11-03 02:50:32,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650627689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:32,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:50:32,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:50:32,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4706481] [2022-11-03 02:50:32,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:32,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:50:32,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:32,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:50:32,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:50:32,849 INFO L87 Difference]: Start difference. First operand 6750 states and 9317 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 02:50:36,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:37,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:40,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:40,016 INFO L93 Difference]: Finished difference Result 6756 states and 9322 transitions. [2022-11-03 02:50:40,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:50:40,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 287 [2022-11-03 02:50:40,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:40,049 INFO L225 Difference]: With dead ends: 6756 [2022-11-03 02:50:40,049 INFO L226 Difference]: Without dead ends: 6642 [2022-11-03 02:50:40,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:50:40,054 INFO L413 NwaCegarLoop]: 1550 mSDtfsCounter, 1721 mSDsluCounter, 3563 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 4637 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:40,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1721 Valid, 4637 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-03 02:50:40,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6642 states. [2022-11-03 02:50:40,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6642 to 6642. [2022-11-03 02:50:40,654 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, (1866), 1807 states have call predecessors, (1866), 1850 states have call successors, (1866) [2022-11-03 02:50:40,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6642 states to 6642 states and 9177 transitions. [2022-11-03 02:50:40,684 INFO L78 Accepts]: Start accepts. Automaton has 6642 states and 9177 transitions. Word has length 287 [2022-11-03 02:50:40,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:40,685 INFO L495 AbstractCegarLoop]: Abstraction has 6642 states and 9177 transitions. [2022-11-03 02:50:40,685 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, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 02:50:40,685 INFO L276 IsEmpty]: Start isEmpty. Operand 6642 states and 9177 transitions. [2022-11-03 02:50:40,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-11-03 02:50:40,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:40,692 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] [2022-11-03 02:50:40,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:50:40,692 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:50:40,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:40,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1629937378, now seen corresponding path program 1 times [2022-11-03 02:50:40,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:40,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833867028] [2022-11-03 02:50:40,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:40,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1761 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1754 trivial. 0 not checked. [2022-11-03 02:50:41,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:41,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833867028] [2022-11-03 02:50:41,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833867028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:41,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:50:41,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:50:41,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23007732] [2022-11-03 02:50:41,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:41,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:50:41,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:41,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:50:41,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:50:41,038 INFO L87 Difference]: Start difference. First operand 6642 states and 9177 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) [2022-11-03 02:50:45,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:46,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:46,210 INFO L93 Difference]: Finished difference Result 14858 states and 20449 transitions. [2022-11-03 02:50:46,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:50:46,214 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 [2022-11-03 02:50:46,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:46,253 INFO L225 Difference]: With dead ends: 14858 [2022-11-03 02:50:46,253 INFO L226 Difference]: Without dead ends: 8498 [2022-11-03 02:50:46,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:50:46,282 INFO L413 NwaCegarLoop]: 2132 mSDtfsCounter, 757 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 3611 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:46,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 3611 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-03 02:50:46,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8498 states. [2022-11-03 02:50:46,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8498 to 8439. [2022-11-03 02:50:46,998 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, (2339), 2260 states have call predecessors, (2339), 2321 states have call successors, (2339) [2022-11-03 02:50:47,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8439 states to 8439 states and 11539 transitions. [2022-11-03 02:50:47,034 INFO L78 Accepts]: Start accepts. Automaton has 8439 states and 11539 transitions. Word has length 300 [2022-11-03 02:50:47,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:47,034 INFO L495 AbstractCegarLoop]: Abstraction has 8439 states and 11539 transitions. [2022-11-03 02:50:47,035 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) [2022-11-03 02:50:47,035 INFO L276 IsEmpty]: Start isEmpty. Operand 8439 states and 11539 transitions. [2022-11-03 02:50:47,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2022-11-03 02:50:47,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:47,045 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] [2022-11-03 02:50:47,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:50:47,045 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)] === [2022-11-03 02:50:47,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:47,046 INFO L85 PathProgramCache]: Analyzing trace with hash -999250466, now seen corresponding path program 1 times [2022-11-03 02:50:47,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:47,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112471818] [2022-11-03 02:50:47,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:47,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:47,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1829 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1822 trivial. 0 not checked. [2022-11-03 02:50:47,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:47,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112471818] [2022-11-03 02:50:47,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112471818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:47,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:50:47,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:50:47,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247951887] [2022-11-03 02:50:47,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:47,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:50:47,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:47,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:50:47,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:50:47,373 INFO L87 Difference]: Start difference. First operand 8439 states and 11539 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) [2022-11-03 02:50:54,044 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 [] [2022-11-03 02:50:54,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:54,537 INFO L93 Difference]: Finished difference Result 20352 states and 27881 transitions. [2022-11-03 02:50:54,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:50:54,538 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 [2022-11-03 02:50:54,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:54,593 INFO L225 Difference]: With dead ends: 20352 [2022-11-03 02:50:54,594 INFO L226 Difference]: Without dead ends: 12195 [2022-11-03 02:50:54,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:50:54,633 INFO L413 NwaCegarLoop]: 2901 mSDtfsCounter, 1615 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:54,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 4414 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 722 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-03 02:50:54,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12195 states. [2022-11-03 02:50:55,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12195 to 12108. [2022-11-03 02:50:55,428 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, (3341), 3220 states have call predecessors, (3341), 3315 states have call successors, (3341) [2022-11-03 02:50:55,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12108 states to 12108 states and 16560 transitions. [2022-11-03 02:50:55,485 INFO L78 Accepts]: Start accepts. Automaton has 12108 states and 16560 transitions. Word has length 351 [2022-11-03 02:50:55,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:55,486 INFO L495 AbstractCegarLoop]: Abstraction has 12108 states and 16560 transitions. [2022-11-03 02:50:55,486 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) [2022-11-03 02:50:55,487 INFO L276 IsEmpty]: Start isEmpty. Operand 12108 states and 16560 transitions. [2022-11-03 02:50:55,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-11-03 02:50:55,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:55,503 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] [2022-11-03 02:50:55,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:50:55,503 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)] === [2022-11-03 02:50:55,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:55,504 INFO L85 PathProgramCache]: Analyzing trace with hash -668302186, now seen corresponding path program 1 times [2022-11-03 02:50:55,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:55,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203917964] [2022-11-03 02:50:55,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:55,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:56,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2151 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2132 trivial. 0 not checked. [2022-11-03 02:50:56,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:56,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203917964] [2022-11-03 02:50:56,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203917964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:56,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:50:56,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:50:56,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231500792] [2022-11-03 02:50:56,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:56,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:50:56,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:56,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:50:56,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:50:56,242 INFO L87 Difference]: Start difference. First operand 12108 states and 16560 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) [2022-11-03 02:51:01,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:02,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:05,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:07,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:09,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:13,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:13,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:13,692 INFO L93 Difference]: Finished difference Result 27880 states and 38099 transitions. [2022-11-03 02:51:13,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:51:13,693 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 [2022-11-03 02:51:13,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:13,766 INFO L225 Difference]: With dead ends: 27880 [2022-11-03 02:51:13,766 INFO L226 Difference]: Without dead ends: 16054 [2022-11-03 02:51:13,807 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 [2022-11-03 02:51:13,808 INFO L413 NwaCegarLoop]: 2941 mSDtfsCounter, 1674 mSDsluCounter, 4394 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1676 SdHoareTripleChecker+Valid, 6666 SdHoareTripleChecker+Invalid, 1885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:13,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1676 Valid, 6666 Invalid, 1885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1873 Invalid, 2 Unknown, 0 Unchecked, 16.2s Time] [2022-11-03 02:51:13,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16054 states. [2022-11-03 02:51:15,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16054 to 15967. [2022-11-03 02:51:15,086 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, (4371), 4208 states have call predecessors, (4371), 4337 states have call successors, (4371) [2022-11-03 02:51:15,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15967 states to 15967 states and 21769 transitions. [2022-11-03 02:51:15,160 INFO L78 Accepts]: Start accepts. Automaton has 15967 states and 21769 transitions. Word has length 409 [2022-11-03 02:51:15,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:15,161 INFO L495 AbstractCegarLoop]: Abstraction has 15967 states and 21769 transitions. [2022-11-03 02:51:15,161 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) [2022-11-03 02:51:15,161 INFO L276 IsEmpty]: Start isEmpty. Operand 15967 states and 21769 transitions. [2022-11-03 02:51:15,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-11-03 02:51:15,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:15,179 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] [2022-11-03 02:51:15,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:51:15,179 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)] === [2022-11-03 02:51:15,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:15,180 INFO L85 PathProgramCache]: Analyzing trace with hash -461604208, now seen corresponding path program 1 times [2022-11-03 02:51:15,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:15,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884529580] [2022-11-03 02:51:15,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:15,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:16,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2775 trivial. 0 not checked. [2022-11-03 02:51:16,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:16,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884529580] [2022-11-03 02:51:16,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884529580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:16,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:16,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:51:16,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157675996] [2022-11-03 02:51:16,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:16,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:51:16,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:16,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:51:16,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:51:16,807 INFO L87 Difference]: Start difference. First operand 15967 states and 21769 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) [2022-11-03 02:51:23,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:26,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:27,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:30,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:32,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:34,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:34,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:34,735 INFO L93 Difference]: Finished difference Result 16019 states and 21818 transitions. [2022-11-03 02:51:34,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:51:34,736 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 [2022-11-03 02:51:34,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:34,797 INFO L225 Difference]: With dead ends: 16019 [2022-11-03 02:51:34,797 INFO L226 Difference]: Without dead ends: 16017 [2022-11-03 02:51:34,803 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 [2022-11-03 02:51:34,804 INFO L413 NwaCegarLoop]: 2013 mSDtfsCounter, 1499 mSDsluCounter, 6275 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 7526 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:34,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 7526 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1043 Invalid, 2 Unknown, 0 Unchecked, 16.8s Time] [2022-11-03 02:51:34,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16017 states. [2022-11-03 02:51:36,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16017 to 16005. [2022-11-03 02:51:36,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16005 states, 10020 states have (on average 1.304191616766467) internal successors, (13068), 10169 states have internal predecessors, (13068), 4351 states have call successors, (4351), 1642 states have call predecessors, (4351), 1631 states have return successors, (4380), 4220 states have call predecessors, (4380), 4347 states have call successors, (4380) [2022-11-03 02:51:36,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16005 states to 16005 states and 21799 transitions. [2022-11-03 02:51:36,087 INFO L78 Accepts]: Start accepts. Automaton has 16005 states and 21799 transitions. Word has length 476 [2022-11-03 02:51:36,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:36,088 INFO L495 AbstractCegarLoop]: Abstraction has 16005 states and 21799 transitions. [2022-11-03 02:51:36,088 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) [2022-11-03 02:51:36,088 INFO L276 IsEmpty]: Start isEmpty. Operand 16005 states and 21799 transitions. [2022-11-03 02:51:36,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-11-03 02:51:36,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:36,109 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] [2022-11-03 02:51:36,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:51:36,110 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)] === [2022-11-03 02:51:36,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:36,110 INFO L85 PathProgramCache]: Analyzing trace with hash 636847332, now seen corresponding path program 1 times [2022-11-03 02:51:36,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:36,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481590535] [2022-11-03 02:51:36,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:36,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:36,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2776 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 2754 trivial. 0 not checked. [2022-11-03 02:51:36,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:36,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481590535] [2022-11-03 02:51:36,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481590535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:36,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:36,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:51:36,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098733734] [2022-11-03 02:51:36,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:36,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:51:36,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:36,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:51:36,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:51:36,673 INFO L87 Difference]: Start difference. First operand 16005 states and 21799 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) [2022-11-03 02:51:41,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:44,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:45,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:45,575 INFO L93 Difference]: Finished difference Result 36626 states and 49600 transitions. [2022-11-03 02:51:45,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:51:45,575 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 [2022-11-03 02:51:45,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:45,664 INFO L225 Difference]: With dead ends: 36626 [2022-11-03 02:51:45,664 INFO L226 Difference]: Without dead ends: 20903 [2022-11-03 02:51:45,727 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 [2022-11-03 02:51:45,728 INFO L413 NwaCegarLoop]: 2389 mSDtfsCounter, 1223 mSDsluCounter, 3743 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 5613 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:45,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 5613 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1399 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-03 02:51:45,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20903 states. [2022-11-03 02:51:47,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20903 to 20784. [2022-11-03 02:51:47,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20784 states, 12962 states have (on average 1.2972535102607623) internal successors, (16815), 13155 states have internal predecessors, (16815), 5566 states have call successors, (5566), 2269 states have call predecessors, (5566), 2253 states have return successors, (5603), 5391 states have call predecessors, (5603), 5562 states have call successors, (5603) [2022-11-03 02:51:47,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20784 states to 20784 states and 27984 transitions. [2022-11-03 02:51:47,216 INFO L78 Accepts]: Start accepts. Automaton has 20784 states and 27984 transitions. Word has length 486 [2022-11-03 02:51:47,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:47,216 INFO L495 AbstractCegarLoop]: Abstraction has 20784 states and 27984 transitions. [2022-11-03 02:51:47,217 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) [2022-11-03 02:51:47,217 INFO L276 IsEmpty]: Start isEmpty. Operand 20784 states and 27984 transitions. [2022-11-03 02:51:47,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2022-11-03 02:51:47,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:47,245 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] [2022-11-03 02:51:47,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 02:51:47,245 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)] === [2022-11-03 02:51:47,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:47,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1191199598, now seen corresponding path program 1 times [2022-11-03 02:51:47,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:47,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271369629] [2022-11-03 02:51:47,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:47,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:47,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2393 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 2361 trivial. 0 not checked. [2022-11-03 02:51:47,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:47,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271369629] [2022-11-03 02:51:47,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271369629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:47,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:47,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:51:47,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836050013] [2022-11-03 02:51:47,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:47,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:51:47,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:47,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:51:47,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:51:47,746 INFO L87 Difference]: Start difference. First operand 20784 states and 27984 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) [2022-11-03 02:51:52,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:00,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:01,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:01,321 INFO L93 Difference]: Finished difference Result 46248 states and 62295 transitions. [2022-11-03 02:52:01,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:52:01,321 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 [2022-11-03 02:52:01,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:01,430 INFO L225 Difference]: With dead ends: 46248 [2022-11-03 02:52:01,430 INFO L226 Difference]: Without dead ends: 25746 [2022-11-03 02:52:01,500 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 [2022-11-03 02:52:01,500 INFO L413 NwaCegarLoop]: 2936 mSDtfsCounter, 1628 mSDsluCounter, 4433 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 6695 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:01,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1630 Valid, 6695 Invalid, 1891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1883 Invalid, 1 Unknown, 0 Unchecked, 11.8s Time] [2022-11-03 02:52:01,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25746 states. [2022-11-03 02:52:03,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25746 to 25631. [2022-11-03 02:52:03,522 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) [2022-11-03 02:52:03,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25631 states to 25631 states and 34504 transitions. [2022-11-03 02:52:03,603 INFO L78 Accepts]: Start accepts. Automaton has 25631 states and 34504 transitions. Word has length 460 [2022-11-03 02:52:03,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:03,603 INFO L495 AbstractCegarLoop]: Abstraction has 25631 states and 34504 transitions. [2022-11-03 02:52:03,604 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) [2022-11-03 02:52:03,604 INFO L276 IsEmpty]: Start isEmpty. Operand 25631 states and 34504 transitions. [2022-11-03 02:52:03,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2022-11-03 02:52:03,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:03,629 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] [2022-11-03 02:52:03,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 02:52:03,629 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)] === [2022-11-03 02:52:03,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:03,630 INFO L85 PathProgramCache]: Analyzing trace with hash 2076155763, now seen corresponding path program 1 times [2022-11-03 02:52:03,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:03,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482821702] [2022-11-03 02:52:03,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:03,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2829 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2829 trivial. 0 not checked. [2022-11-03 02:52:04,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:04,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482821702] [2022-11-03 02:52:04,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482821702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:04,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:04,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:52:04,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999002412] [2022-11-03 02:52:04,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:04,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:52:04,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:04,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:52:04,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:52:04,440 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) [2022-11-03 02:52:11,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:13,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:15,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:16,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:16,098 INFO L93 Difference]: Finished difference Result 51030 states and 68721 transitions. [2022-11-03 02:52:16,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:52:16,099 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 [2022-11-03 02:52:16,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:16,207 INFO L225 Difference]: With dead ends: 51030 [2022-11-03 02:52:16,207 INFO L226 Difference]: Without dead ends: 25681 [2022-11-03 02:52:16,293 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 [2022-11-03 02:52:16,294 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 1 mSDsluCounter, 5339 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6173 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:16,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6173 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 967 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2022-11-03 02:52:16,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25681 states. [2022-11-03 02:52:18,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25681 to 25655. [2022-11-03 02:52:18,159 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) [2022-11-03 02:52:18,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25655 states to 25655 states and 34533 transitions. [2022-11-03 02:52:18,237 INFO L78 Accepts]: Start accepts. Automaton has 25655 states and 34533 transitions. Word has length 502 [2022-11-03 02:52:18,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:18,237 INFO L495 AbstractCegarLoop]: Abstraction has 25655 states and 34533 transitions. [2022-11-03 02:52:18,237 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) [2022-11-03 02:52:18,237 INFO L276 IsEmpty]: Start isEmpty. Operand 25655 states and 34533 transitions. [2022-11-03 02:52:18,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-11-03 02:52:18,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:18,260 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] [2022-11-03 02:52:18,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 02:52:18,260 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)] === [2022-11-03 02:52:18,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:18,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1578405251, now seen corresponding path program 1 times [2022-11-03 02:52:18,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:18,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123768566] [2022-11-03 02:52:18,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:18,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:19,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2829 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2829 trivial. 0 not checked. [2022-11-03 02:52:19,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:19,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123768566] [2022-11-03 02:52:19,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123768566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:19,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:19,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:52:19,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453474925] [2022-11-03 02:52:19,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:19,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:52:19,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:19,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:52:19,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:52:19,024 INFO L87 Difference]: Start difference. First operand 25655 states and 34533 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 2 states have call predecessors, (50), 1 states have call successors, (50) [2022-11-03 02:52:24,319 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 [] [2022-11-03 02:52:26,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:29,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:52:30,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:30,355 INFO L93 Difference]: Finished difference Result 51868 states and 70068 transitions. [2022-11-03 02:52:30,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:52:30,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 2 states have call predecessors, (50), 1 states have call successors, (50) Word has length 508 [2022-11-03 02:52:30,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:30,483 INFO L225 Difference]: With dead ends: 51868 [2022-11-03 02:52:30,483 INFO L226 Difference]: Without dead ends: 26220 [2022-11-03 02:52:30,564 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 [2022-11-03 02:52:30,565 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 149 mSDsluCounter, 3450 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 41 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 4548 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:30,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 4548 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 779 Invalid, 2 Unknown, 0 Unchecked, 9.3s Time] [2022-11-03 02:52:30,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26220 states. [2022-11-03 02:52:32,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26220 to 26220. [2022-11-03 02:52:32,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26220 states, 16428 states have (on average 1.3002191380569759) internal successors, (21360), 16682 states have internal predecessors, (21360), 6990 states have call successors, (6990), 2811 states have call predecessors, (6990), 2799 states have return successors, (7057), 6775 states have call predecessors, (7057), 6986 states have call successors, (7057) [2022-11-03 02:52:32,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26220 states to 26220 states and 35407 transitions. [2022-11-03 02:52:32,493 INFO L78 Accepts]: Start accepts. Automaton has 26220 states and 35407 transitions. Word has length 508 [2022-11-03 02:52:32,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:32,494 INFO L495 AbstractCegarLoop]: Abstraction has 26220 states and 35407 transitions. [2022-11-03 02:52:32,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 2 states have call predecessors, (50), 1 states have call successors, (50) [2022-11-03 02:52:32,494 INFO L276 IsEmpty]: Start isEmpty. Operand 26220 states and 35407 transitions. [2022-11-03 02:52:32,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2022-11-03 02:52:32,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:32,507 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, 1] [2022-11-03 02:52:32,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 02:52:32,507 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)] === [2022-11-03 02:52:32,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:32,508 INFO L85 PathProgramCache]: Analyzing trace with hash 2052671129, now seen corresponding path program 1 times [2022-11-03 02:52:32,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:32,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518976055] [2022-11-03 02:52:32,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:32,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:33,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2829 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 2805 trivial. 0 not checked. [2022-11-03 02:52:33,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:33,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518976055] [2022-11-03 02:52:33,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518976055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:33,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:33,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:52:33,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790928430] [2022-11-03 02:52:33,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:33,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:52:33,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:33,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:52:33,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:52:33,295 INFO L87 Difference]: Start difference. First operand 26220 states and 35407 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-11-03 02:52:42,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:43,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:43,452 INFO L93 Difference]: Finished difference Result 73082 states and 98948 transitions. [2022-11-03 02:52:43,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:52:43,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 509 [2022-11-03 02:52:43,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:43,602 INFO L225 Difference]: With dead ends: 73082 [2022-11-03 02:52:43,602 INFO L226 Difference]: Without dead ends: 47144 [2022-11-03 02:52:43,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:52:43,791 INFO L413 NwaCegarLoop]: 2880 mSDtfsCounter, 1558 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:43,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 4399 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-03 02:52:43,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47144 states. [2022-11-03 02:52:47,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47144 to 47115. [2022-11-03 02:52:47,852 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) [2022-11-03 02:52:47,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47115 states to 47115 states and 63557 transitions. [2022-11-03 02:52:48,000 INFO L78 Accepts]: Start accepts. Automaton has 47115 states and 63557 transitions. Word has length 509 [2022-11-03 02:52:48,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:48,000 INFO L495 AbstractCegarLoop]: Abstraction has 47115 states and 63557 transitions. [2022-11-03 02:52:48,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-11-03 02:52:48,001 INFO L276 IsEmpty]: Start isEmpty. Operand 47115 states and 63557 transitions. [2022-11-03 02:52:48,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2022-11-03 02:52:48,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:48,018 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] [2022-11-03 02:52:48,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 02:52:48,018 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)] === [2022-11-03 02:52:48,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:48,019 INFO L85 PathProgramCache]: Analyzing trace with hash 331291619, now seen corresponding path program 1 times [2022-11-03 02:52:48,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:48,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652870064] [2022-11-03 02:52:48,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:48,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:50,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3034 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3034 trivial. 0 not checked. [2022-11-03 02:52:50,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:50,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652870064] [2022-11-03 02:52:50,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652870064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:50,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:50,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:52:50,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56794906] [2022-11-03 02:52:50,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:50,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:52:50,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:50,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:52:50,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:52:50,700 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) [2022-11-03 02:53:01,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:53:03,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:53:07,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:53:08,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:08,996 INFO L93 Difference]: Finished difference Result 50517 states and 67944 transitions. [2022-11-03 02:53:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:53:08,997 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 2 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (52), 3 states have call predecessors, (52), 2 states have call successors, (52) Word has length 532 [2022-11-03 02:53:08,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:09,134 INFO L225 Difference]: With dead ends: 50517 [2022-11-03 02:53:09,134 INFO L226 Difference]: Without dead ends: 50515 [2022-11-03 02:53:09,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:53:09,150 INFO L413 NwaCegarLoop]: 1765 mSDtfsCounter, 1230 mSDsluCounter, 9304 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 567 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 9847 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:09,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 9847 Invalid, 2102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 1532 Invalid, 3 Unknown, 0 Unchecked, 14.8s Time] [2022-11-03 02:53:09,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50515 states. [2022-11-03 02:53:12,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50515 to 50501. [2022-11-03 02:53:12,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50501 states, 32007 states have (on average 1.3000593620145593) internal successors, (41611), 32371 states have internal predecessors, (41611), 13071 states have call successors, (13071), 5440 states have call predecessors, (13071), 5420 states have return successors, (13225), 12788 states have call predecessors, (13225), 13067 states have call successors, (13225) [2022-11-03 02:53:12,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50501 states to 50501 states and 67907 transitions. [2022-11-03 02:53:12,463 INFO L78 Accepts]: Start accepts. Automaton has 50501 states and 67907 transitions. Word has length 532 [2022-11-03 02:53:12,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:12,464 INFO L495 AbstractCegarLoop]: Abstraction has 50501 states and 67907 transitions. [2022-11-03 02:53:12,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 2 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (52), 3 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-03 02:53:12,464 INFO L276 IsEmpty]: Start isEmpty. Operand 50501 states and 67907 transitions. [2022-11-03 02:53:12,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2022-11-03 02:53:12,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:12,489 INFO L195 NwaCegarLoop]: trace histogram [35, 20, 20, 20, 20, 20, 20, 14, 14, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:12,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 02:53:12,490 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:53:12,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:12,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1833499717, now seen corresponding path program 1 times [2022-11-03 02:53:12,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:12,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211357273] [2022-11-03 02:53:12,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:12,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:13,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2805 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 2746 trivial. 0 not checked. [2022-11-03 02:53:13,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:13,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211357273] [2022-11-03 02:53:13,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211357273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:13,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:13,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:53:13,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238649051] [2022-11-03 02:53:13,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:13,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:53:13,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:13,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:53:13,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:53:13,246 INFO L87 Difference]: Start difference. First operand 50501 states and 67907 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2022-11-03 02:53:20,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:53:23,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:53:26,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:26,929 INFO L93 Difference]: Finished difference Result 123394 states and 166066 transitions. [2022-11-03 02:53:26,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:53:26,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 511 [2022-11-03 02:53:26,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:27,162 INFO L225 Difference]: With dead ends: 123394 [2022-11-03 02:53:27,162 INFO L226 Difference]: Without dead ends: 73175 [2022-11-03 02:53:27,281 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 [2022-11-03 02:53:27,282 INFO L413 NwaCegarLoop]: 2062 mSDtfsCounter, 1567 mSDsluCounter, 3442 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 4990 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:27,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1569 Valid, 4990 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1518 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2022-11-03 02:53:27,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73175 states.