./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/bin/utaipan-eEHZpOm5b7/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_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f6012e8ec841b08462bbd246c354a43139de7ccb42d1c6282a50e12dbc313f31 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:04:40,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:04:40,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:04:40,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:04:40,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:04:40,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:04:40,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:04:40,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:04:40,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:04:40,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:04:40,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:04:40,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:04:40,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:04:40,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:04:40,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:04:40,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:04:40,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:04:40,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:04:40,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:04:40,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:04:40,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:04:40,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:04:40,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:04:40,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:04:40,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:04:40,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:04:40,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:04:40,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:04:40,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:04:40,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:04:40,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:04:40,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:04:40,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:04:40,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:04:40,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:04:40,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:04:40,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:04:40,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:04:40,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:04:40,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:04:40,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:04:40,331 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:04:40,361 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:04:40,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:04:40,362 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:04:40,362 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:04:40,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:04:40,363 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:04:40,363 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:04:40,364 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:04:40,364 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:04:40,364 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:04:40,364 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:04:40,365 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:04:40,365 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:04:40,365 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:04:40,365 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:04:40,366 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:04:40,366 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:04:40,366 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:04:40,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:04:40,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:04:40,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:04:40,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:04:40,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:04:40,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:04:40,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:04:40,368 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:04:40,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:04:40,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:04:40,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:04:40,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:04:40,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:04:40,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:04:40,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:04:40,370 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:04:40,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:04:40,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:04:40,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:04:40,371 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:04:40,371 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6012e8ec841b08462bbd246c354a43139de7ccb42d1c6282a50e12dbc313f31 [2021-11-25 19:04:40,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:04:40,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:04:40,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:04:40,800 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:04:40,801 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:04:40,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-25 19:04:40,909 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/bin/utaipan-eEHZpOm5b7/data/cf0ea4b07/28363ee4bff04102bc5ad045ac98eacf/FLAGa7a2d0d56 [2021-11-25 19:04:42,141 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:04:42,142 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-25 19:04:42,210 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/bin/utaipan-eEHZpOm5b7/data/cf0ea4b07/28363ee4bff04102bc5ad045ac98eacf/FLAGa7a2d0d56 [2021-11-25 19:04:42,334 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/bin/utaipan-eEHZpOm5b7/data/cf0ea4b07/28363ee4bff04102bc5ad045ac98eacf [2021-11-25 19:04:42,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:04:42,340 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:04:42,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:04:42,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:04:42,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:04:42,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:04:42" (1/1) ... [2021-11-25 19:04:42,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e4050c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:42, skipping insertion in model container [2021-11-25 19:04:42,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:04:42" (1/1) ... [2021-11-25 19:04:42,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:04:42,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:04:45,893 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_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314540,314553] [2021-11-25 19:04:45,896 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_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314706,314719] [2021-11-25 19:04:45,897 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_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314870,314883] [2021-11-25 19:04:45,898 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_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[315035,315048] [2021-11-25 19:04:45,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:04:46,011 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:04:46,548 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_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314540,314553] [2021-11-25 19:04:46,549 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_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314706,314719] [2021-11-25 19:04:46,550 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_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314870,314883] [2021-11-25 19:04:46,551 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_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[315035,315048] [2021-11-25 19:04:46,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:04:46,972 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:04:46,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:46 WrapperNode [2021-11-25 19:04:46,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:04:46,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:04:46,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:04:46,975 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:04:46,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:46" (1/1) ... [2021-11-25 19:04:47,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:46" (1/1) ... [2021-11-25 19:04:47,367 INFO L137 Inliner]: procedures = 386, calls = 2493, calls flagged for inlining = 198, calls inlined = 148, statements flattened = 4944 [2021-11-25 19:04:47,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:04:47,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:04:47,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:04:47,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:04:47,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:46" (1/1) ... [2021-11-25 19:04:47,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:46" (1/1) ... [2021-11-25 19:04:47,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:46" (1/1) ... [2021-11-25 19:04:47,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:46" (1/1) ... [2021-11-25 19:04:47,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:46" (1/1) ... [2021-11-25 19:04:47,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:46" (1/1) ... [2021-11-25 19:04:47,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:46" (1/1) ... [2021-11-25 19:04:47,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:04:47,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:04:47,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:04:47,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:04:47,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:46" (1/1) ... [2021-11-25 19:04:47,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:04:47,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:04:47,820 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:04:47,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_659b2988-1dac-4c7b-9fd6-afb6cf155a6a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:04:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-25 19:04:47,882 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-25 19:04:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 19:04:47,883 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 19:04:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-11-25 19:04:47,883 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-11-25 19:04:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:04:47,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:04:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 19:04:47,884 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 19:04:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_stereo_mono [2021-11-25 19:04:47,884 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_stereo_mono [2021-11-25 19:04:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 19:04:47,885 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 19:04:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_len [2021-11-25 19:04:47,885 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_len [2021-11-25 19:04:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2021-11-25 19:04:47,886 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2021-11-25 19:04:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 19:04:47,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 19:04:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 19:04:47,887 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 19:04:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2021-11-25 19:04:47,887 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2021-11-25 19:04:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 19:04:47,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 19:04:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 19:04:47,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 19:04:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 19:04:47,888 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 19:04:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:04:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-25 19:04:47,889 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-25 19:04:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure st_unregister [2021-11-25 19:04:47,889 INFO L138 BoogieDeclarations]: Found implementation of procedure st_unregister [2021-11-25 19:04:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 19:04:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-25 19:04:47,890 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-25 19:04:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 19:04:47,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 19:04:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:04:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 19:04:47,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 19:04:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:04:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_fmdev [2021-11-25 19:04:47,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_fmdev [2021-11-25 19:04:47,892 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_release [2021-11-25 19:04:47,892 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_release [2021-11-25 19:04:47,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 19:04:47,893 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 19:04:47,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_fmdev [2021-11-25 19:04:47,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_fmdev [2021-11-25 19:04:47,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 19:04:47,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 19:04:47,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 19:04:47,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 19:04:47,894 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_rds_mode [2021-11-25 19:04:47,894 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_rds_mode [2021-11-25 19:04:47,894 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2021-11-25 19:04:47,895 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2021-11-25 19:04:47,895 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata [2021-11-25 19:04:47,895 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata [2021-11-25 19:04:47,895 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_rds_mode [2021-11-25 19:04:47,895 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_rds_mode [2021-11-25 19:04:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:04:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 19:04:47,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 19:04:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 19:04:47,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 19:04:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 19:04:47,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 19:04:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-25 19:04:47,897 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-25 19:04:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:04:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 19:04:47,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 19:04:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:04:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-25 19:04:47,899 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-25 19:04:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-25 19:04:47,899 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-25 19:04:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_preemph_filter [2021-11-25 19:04:47,899 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_preemph_filter [2021-11-25 19:04:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-11-25 19:04:47,900 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-11-25 19:04:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-25 19:04:47,900 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-25 19:04:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-25 19:04:47,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-25 19:04:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 19:04:47,902 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 19:04:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure fm_g_volatile_ctrl [2021-11-25 19:04:47,902 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_g_volatile_ctrl [2021-11-25 19:04:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:04:47,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:04:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-25 19:04:47,903 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-25 19:04:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 19:04:47,903 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 19:04:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure fm_config_rx_mute_reg [2021-11-25 19:04:47,904 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_config_rx_mute_reg [2021-11-25 19:04:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2021-11-25 19:04:47,904 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2021-11-25 19:04:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 19:04:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:04:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_data_mode [2021-11-25 19:04:47,905 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_data_mode [2021-11-25 19:04:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 19:04:47,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 19:04:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_pwr_lvl [2021-11-25 19:04:47,906 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_pwr_lvl [2021-11-25 19:04:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-11-25 19:04:47,906 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-11-25 19:04:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_prepare [2021-11-25 19:04:47,907 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_prepare [2021-11-25 19:04:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_send_cmd [2021-11-25 19:04:47,907 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_send_cmd [2021-11-25 19:04:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2021-11-25 19:04:47,907 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2021-11-25 19:04:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure fm_send_cmd [2021-11-25 19:04:47,908 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_send_cmd [2021-11-25 19:04:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-25 19:04:47,908 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-25 19:04:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:04:47,909 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:04:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call_stage [2021-11-25 19:04:47,909 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call_stage [2021-11-25 19:04:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-25 19:04:47,909 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-25 19:04:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2021-11-25 19:04:47,910 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2021-11-25 19:04:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:04:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2021-11-25 19:04:47,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2021-11-25 19:04:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:04:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_rds_cache [2021-11-25 19:04:47,911 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_rds_cache [2021-11-25 19:04:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_station_info [2021-11-25 19:04:47,911 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_station_info [2021-11-25 19:04:47,912 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_s_ctrl [2021-11-25 19:04:47,912 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_s_ctrl [2021-11-25 19:04:47,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:04:47,912 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-25 19:04:47,912 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-25 19:04:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2021-11-25 19:04:47,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2021-11-25 19:04:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure enable_xmit [2021-11-25 19:04:47,913 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_xmit [2021-11-25 19:04:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-25 19:04:47,914 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-25 19:04:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_volume [2021-11-25 19:04:47,914 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_volume [2021-11-25 19:04:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 19:04:47,914 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 19:04:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-25 19:04:47,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-25 19:04:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-25 19:04:47,915 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-25 19:04:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 19:04:47,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 19:04:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 19:04:47,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 19:04:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_or_killable_mutex_of_fmdev [2021-11-25 19:04:47,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_or_killable_mutex_of_fmdev [2021-11-25 19:04:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_text [2021-11-25 19:04:47,917 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_text [2021-11-25 19:04:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2021-11-25 19:04:47,917 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2021-11-25 19:04:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_release [2021-11-25 19:04:47,917 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_release [2021-11-25 19:04:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 19:04:47,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 19:04:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 19:04:47,918 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 19:04:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 19:04:47,919 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 19:04:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 19:04:47,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 19:04:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-11-25 19:04:47,919 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-11-25 19:04:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:04:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-25 19:04:47,920 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-25 19:04:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 19:04:47,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 19:04:47,921 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_open [2021-11-25 19:04:47,921 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_open [2021-11-25 19:04:47,921 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 19:04:47,921 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 19:04:47,921 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_freq [2021-11-25 19:04:47,922 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_freq [2021-11-25 19:04:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_mode [2021-11-25 19:04:47,922 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_mode [2021-11-25 19:04:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_write [2021-11-25 19:04:47,922 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_write [2021-11-25 19:04:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-25 19:04:47,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-25 19:04:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call [2021-11-25 19:04:47,923 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call [2021-11-25 19:04:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 19:04:47,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 19:04:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-25 19:04:47,924 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-25 19:04:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure fm_power_down [2021-11-25 19:04:47,924 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_power_down [2021-11-25 19:04:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure fm_download_firmware [2021-11-25 19:04:47,925 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_download_firmware [2021-11-25 19:04:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:04:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 19:04:47,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 19:04:49,008 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:04:49,013 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:04:49,303 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 19:04:54,428 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 19:04:54,555 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:04:55,621 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:04:55,621 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:04:55,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:04:55 BoogieIcfgContainer [2021-11-25 19:04:55,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:04:55,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:04:55,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:04:55,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:04:55,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:04:42" (1/3) ... [2021-11-25 19:04:55,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d5f537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:04:55, skipping insertion in model container [2021-11-25 19:04:55,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:04:46" (2/3) ... [2021-11-25 19:04:55,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d5f537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:04:55, skipping insertion in model container [2021-11-25 19:04:55,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:04:55" (3/3) ... [2021-11-25 19:04:55,704 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-25 19:04:55,712 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:04:55,713 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 19:04:55,782 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:04:55,790 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:04:55,790 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 19:04:55,876 INFO L276 IsEmpty]: Start isEmpty. Operand has 1354 states, 833 states have (on average 1.3445378151260505) internal successors, (1120), 849 states have internal predecessors, (1120), 422 states have call successors, (422), 97 states have call predecessors, (422), 96 states have return successors, (415), 412 states have call predecessors, (415), 415 states have call successors, (415) [2021-11-25 19:04:55,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-25 19:04:55,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:04:55,923 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:04:55,923 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:04:55,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:04:55,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1690399408, now seen corresponding path program 1 times [2021-11-25 19:04:55,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:04:55,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144512708] [2021-11-25 19:04:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:55,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:04:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:56,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-11-25 19:04:56,984 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:04:56,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144512708] [2021-11-25 19:04:56,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144512708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:04:56,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:04:56,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:04:56,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133783326] [2021-11-25 19:04:56,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:04:57,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:04:57,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:04:57,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:04:57,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:04:57,052 INFO L87 Difference]: Start difference. First operand has 1354 states, 833 states have (on average 1.3445378151260505) internal successors, (1120), 849 states have internal predecessors, (1120), 422 states have call successors, (422), 97 states have call predecessors, (422), 96 states have return successors, (415), 412 states have call predecessors, (415), 415 states have call successors, (415) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-25 19:05:00,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:03,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:03,278 INFO L93 Difference]: Finished difference Result 3841 states and 5609 transitions. [2021-11-25 19:05:03,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:05:03,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 216 [2021-11-25 19:05:03,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:03,343 INFO L225 Difference]: With dead ends: 3841 [2021-11-25 19:05:03,343 INFO L226 Difference]: Without dead ends: 2515 [2021-11-25 19:05:03,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:05:03,365 INFO L933 BasicCegarLoop]: 2040 mSDtfsCounter, 1800 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 3622 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:03,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1800 Valid, 3622 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 525 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-11-25 19:05:03,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2021-11-25 19:05:03,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2510. [2021-11-25 19:05:03,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2510 states, 1565 states have (on average 1.34185303514377) internal successors, (2100), 1596 states have internal predecessors, (2100), 759 states have call successors, (759), 184 states have call predecessors, (759), 183 states have return successors, (755), 748 states have call predecessors, (755), 755 states have call successors, (755) [2021-11-25 19:05:03,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2510 states to 2510 states and 3614 transitions. [2021-11-25 19:05:03,740 INFO L78 Accepts]: Start accepts. Automaton has 2510 states and 3614 transitions. Word has length 216 [2021-11-25 19:05:03,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:03,745 INFO L470 AbstractCegarLoop]: Abstraction has 2510 states and 3614 transitions. [2021-11-25 19:05:03,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-25 19:05:03,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2510 states and 3614 transitions. [2021-11-25 19:05:03,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-25 19:05:03,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:03,759 INFO L514 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:03,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:05:03,760 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:05:03,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:03,763 INFO L85 PathProgramCache]: Analyzing trace with hash 422409988, now seen corresponding path program 1 times [2021-11-25 19:05:03,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:05:03,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357072158] [2021-11-25 19:05:03,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:03,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:05:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:04,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2021-11-25 19:05:04,221 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:05:04,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357072158] [2021-11-25 19:05:04,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357072158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:04,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:04,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:05:04,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960385022] [2021-11-25 19:05:04,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:04,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:05:04,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:05:04,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:05:04,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:05:04,232 INFO L87 Difference]: Start difference. First operand 2510 states and 3614 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-25 19:05:07,433 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:10,628 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:10,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:10,817 INFO L93 Difference]: Finished difference Result 5476 states and 7753 transitions. [2021-11-25 19:05:10,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:05:10,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 235 [2021-11-25 19:05:10,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:10,847 INFO L225 Difference]: With dead ends: 5476 [2021-11-25 19:05:10,847 INFO L226 Difference]: Without dead ends: 3005 [2021-11-25 19:05:10,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:05:10,931 INFO L933 BasicCegarLoop]: 1993 mSDtfsCounter, 1185 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 3627 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:10,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1185 Valid, 3627 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-11-25 19:05:10,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2021-11-25 19:05:11,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 2984. [2021-11-25 19:05:11,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2984 states, 1833 states have (on average 1.3115111838516094) internal successors, (2404), 1877 states have internal predecessors, (2404), 877 states have call successors, (877), 272 states have call predecessors, (877), 271 states have return successors, (873), 859 states have call predecessors, (873), 873 states have call successors, (873) [2021-11-25 19:05:11,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2984 states to 2984 states and 4154 transitions. [2021-11-25 19:05:11,164 INFO L78 Accepts]: Start accepts. Automaton has 2984 states and 4154 transitions. Word has length 235 [2021-11-25 19:05:11,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:11,165 INFO L470 AbstractCegarLoop]: Abstraction has 2984 states and 4154 transitions. [2021-11-25 19:05:11,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-25 19:05:11,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2984 states and 4154 transitions. [2021-11-25 19:05:11,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-25 19:05:11,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:11,174 INFO L514 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:11,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:05:11,175 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:05:11,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:11,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1423016720, now seen corresponding path program 1 times [2021-11-25 19:05:11,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:05:11,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830817510] [2021-11-25 19:05:11,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:11,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:05:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:11,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2021-11-25 19:05:11,528 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:05:11,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830817510] [2021-11-25 19:05:11,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830817510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:11,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:11,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:05:11,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953613774] [2021-11-25 19:05:11,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:11,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:05:11,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:05:11,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:05:11,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:05:11,532 INFO L87 Difference]: Start difference. First operand 2984 states and 4154 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-25 19:05:15,831 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:18,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:19,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:19,344 INFO L93 Difference]: Finished difference Result 5232 states and 7243 transitions. [2021-11-25 19:05:19,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:05:19,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 254 [2021-11-25 19:05:19,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:19,368 INFO L225 Difference]: With dead ends: 5232 [2021-11-25 19:05:19,368 INFO L226 Difference]: Without dead ends: 2287 [2021-11-25 19:05:19,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:05:19,387 INFO L933 BasicCegarLoop]: 1407 mSDtfsCounter, 2027 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 167 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2189 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:19,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2189 Valid, 1914 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1163 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2021-11-25 19:05:19,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2021-11-25 19:05:19,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 2279. [2021-11-25 19:05:19,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 1411 states have (on average 1.3012048192771084) internal successors, (1836), 1426 states have internal predecessors, (1836), 650 states have call successors, (650), 216 states have call predecessors, (650), 215 states have return successors, (646), 641 states have call predecessors, (646), 646 states have call successors, (646) [2021-11-25 19:05:19,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 3132 transitions. [2021-11-25 19:05:19,535 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 3132 transitions. Word has length 254 [2021-11-25 19:05:19,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:19,536 INFO L470 AbstractCegarLoop]: Abstraction has 2279 states and 3132 transitions. [2021-11-25 19:05:19,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-25 19:05:19,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 3132 transitions. [2021-11-25 19:05:19,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-25 19:05:19,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:19,544 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:05:19,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:05:19,544 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:05:19,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:19,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1090217396, now seen corresponding path program 1 times [2021-11-25 19:05:19,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:05:19,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190138419] [2021-11-25 19:05:19,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:19,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:05:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:20,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1536 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1536 trivial. 0 not checked. [2021-11-25 19:05:20,084 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:05:20,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190138419] [2021-11-25 19:05:20,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190138419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:20,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:20,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:05:20,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979416532] [2021-11-25 19:05:20,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:20,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:05:20,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:05:20,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:05:20,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:05:20,089 INFO L87 Difference]: Start difference. First operand 2279 states and 3132 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 19:05:26,962 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:27,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:27,883 INFO L93 Difference]: Finished difference Result 2285 states and 3137 transitions. [2021-11-25 19:05:27,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:05:27,884 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 [2021-11-25 19:05:27,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:27,907 INFO L225 Difference]: With dead ends: 2285 [2021-11-25 19:05:27,907 INFO L226 Difference]: Without dead ends: 2283 [2021-11-25 19:05:27,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:05:27,915 INFO L933 BasicCegarLoop]: 1546 mSDtfsCounter, 1726 mSDsluCounter, 3561 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 4631 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:27,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1731 Valid, 4631 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 726 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2021-11-25 19:05:27,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2021-11-25 19:05:28,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 2283. [2021-11-25 19:05:28,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 1414 states have (on average 1.3005657708628007) internal successors, (1839), 1429 states have internal predecessors, (1839), 650 states have call successors, (650), 217 states have call predecessors, (650), 216 states have return successors, (646), 641 states have call predecessors, (646), 646 states have call successors, (646) [2021-11-25 19:05:28,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 3135 transitions. [2021-11-25 19:05:28,083 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 3135 transitions. Word has length 261 [2021-11-25 19:05:28,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:28,088 INFO L470 AbstractCegarLoop]: Abstraction has 2283 states and 3135 transitions. [2021-11-25 19:05:28,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 19:05:28,088 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 3135 transitions. [2021-11-25 19:05:28,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-25 19:05:28,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:28,096 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 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] [2021-11-25 19:05:28,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:05:28,096 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:05:28,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:28,097 INFO L85 PathProgramCache]: Analyzing trace with hash -976934965, now seen corresponding path program 1 times [2021-11-25 19:05:28,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:05:28,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203130732] [2021-11-25 19:05:28,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:28,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:05:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:28,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1537 trivial. 0 not checked. [2021-11-25 19:05:28,477 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:05:28,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203130732] [2021-11-25 19:05:28,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203130732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:28,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:28,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:05:28,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530029403] [2021-11-25 19:05:28,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:28,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:05:28,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:05:28,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:05:28,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:05:28,480 INFO L87 Difference]: Start difference. First operand 2283 states and 3135 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-25 19:05:34,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:35,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:35,119 INFO L93 Difference]: Finished difference Result 2289 states and 3140 transitions. [2021-11-25 19:05:35,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:05:35,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 267 [2021-11-25 19:05:35,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:35,140 INFO L225 Difference]: With dead ends: 2289 [2021-11-25 19:05:35,140 INFO L226 Difference]: Without dead ends: 2287 [2021-11-25 19:05:35,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:05:35,144 INFO L933 BasicCegarLoop]: 1549 mSDtfsCounter, 1721 mSDsluCounter, 3561 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1725 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, 6.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:35,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1725 Valid, 4634 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 726 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-25 19:05:35,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2021-11-25 19:05:35,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 2287. [2021-11-25 19:05:35,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 1417 states have (on average 1.2999294283697953) internal successors, (1842), 1432 states have internal predecessors, (1842), 650 states have call successors, (650), 218 states have call predecessors, (650), 217 states have return successors, (646), 641 states have call predecessors, (646), 646 states have call successors, (646) [2021-11-25 19:05:35,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3138 transitions. [2021-11-25 19:05:35,321 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3138 transitions. Word has length 267 [2021-11-25 19:05:35,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:35,322 INFO L470 AbstractCegarLoop]: Abstraction has 2287 states and 3138 transitions. [2021-11-25 19:05:35,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-25 19:05:35,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3138 transitions. [2021-11-25 19:05:35,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-25 19:05:35,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:35,330 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:05:35,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:05:35,331 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:05:35,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:35,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1449014032, now seen corresponding path program 1 times [2021-11-25 19:05:35,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:05:35,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400094991] [2021-11-25 19:05:35,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:35,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:05:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:35,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1541 trivial. 0 not checked. [2021-11-25 19:05:35,779 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:05:35,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400094991] [2021-11-25 19:05:35,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400094991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:35,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:35,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:05:35,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965961823] [2021-11-25 19:05:35,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:35,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:05:35,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:05:35,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:05:35,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:05:35,782 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) [2021-11-25 19:05:39,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:41,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:43,966 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:44,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:44,188 INFO L93 Difference]: Finished difference Result 2293 states and 3143 transitions. [2021-11-25 19:05:44,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:05:44,189 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 [2021-11-25 19:05:44,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:44,208 INFO L225 Difference]: With dead ends: 2293 [2021-11-25 19:05:44,208 INFO L226 Difference]: Without dead ends: 2291 [2021-11-25 19:05:44,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:05:44,213 INFO L933 BasicCegarLoop]: 1549 mSDtfsCounter, 1721 mSDsluCounter, 3561 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 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, 8.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:44,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1724 Valid, 4634 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 726 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2021-11-25 19:05:44,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2021-11-25 19:05:44,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2291. [2021-11-25 19:05:44,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 1420 states have (on average 1.2992957746478873) internal successors, (1845), 1435 states have internal predecessors, (1845), 650 states have call successors, (650), 219 states have call predecessors, (650), 218 states have return successors, (646), 641 states have call predecessors, (646), 646 states have call successors, (646) [2021-11-25 19:05:44,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3141 transitions. [2021-11-25 19:05:44,389 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3141 transitions. Word has length 272 [2021-11-25 19:05:44,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:44,391 INFO L470 AbstractCegarLoop]: Abstraction has 2291 states and 3141 transitions. [2021-11-25 19:05:44,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (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) [2021-11-25 19:05:44,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3141 transitions. [2021-11-25 19:05:44,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-11-25 19:05:44,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:44,401 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:44,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:05:44,402 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:05:44,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:44,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1641763157, now seen corresponding path program 1 times [2021-11-25 19:05:44,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:05:44,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734372092] [2021-11-25 19:05:44,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:44,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:05:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1549 trivial. 0 not checked. [2021-11-25 19:05:44,743 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:05:44,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734372092] [2021-11-25 19:05:44,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734372092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:44,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:44,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:05:44,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818136575] [2021-11-25 19:05:44,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:44,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:05:44,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:05:44,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:05:44,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:05:44,747 INFO L87 Difference]: Start difference. First operand 2291 states and 3141 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-25 19:05:48,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:52,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:52,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:52,817 INFO L93 Difference]: Finished difference Result 2297 states and 3146 transitions. [2021-11-25 19:05:52,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:05:52,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 277 [2021-11-25 19:05:52,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:52,838 INFO L225 Difference]: With dead ends: 2297 [2021-11-25 19:05:52,838 INFO L226 Difference]: Without dead ends: 2295 [2021-11-25 19:05:52,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:05:52,841 INFO L933 BasicCegarLoop]: 1549 mSDtfsCounter, 1721 mSDsluCounter, 3561 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 4634 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:52,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1723 Valid, 4634 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 725 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2021-11-25 19:05:52,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2021-11-25 19:05:52,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 2295. [2021-11-25 19:05:52,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2295 states, 1423 states have (on average 1.298664792691497) internal successors, (1848), 1438 states have internal predecessors, (1848), 650 states have call successors, (650), 220 states have call predecessors, (650), 219 states have return successors, (646), 641 states have call predecessors, (646), 646 states have call successors, (646) [2021-11-25 19:05:52,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 3144 transitions. [2021-11-25 19:05:52,994 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 3144 transitions. Word has length 277 [2021-11-25 19:05:52,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:52,995 INFO L470 AbstractCegarLoop]: Abstraction has 2295 states and 3144 transitions. [2021-11-25 19:05:52,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-25 19:05:52,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 3144 transitions. [2021-11-25 19:05:53,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-25 19:05:53,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:53,005 INFO L514 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:53,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:05:53,005 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:05:53,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:53,006 INFO L85 PathProgramCache]: Analyzing trace with hash 664796076, now seen corresponding path program 1 times [2021-11-25 19:05:53,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:05:53,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057892878] [2021-11-25 19:05:53,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:53,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:05:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1599 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1599 trivial. 0 not checked. [2021-11-25 19:05:53,269 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:05:53,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057892878] [2021-11-25 19:05:53,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057892878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:53,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:53,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:05:53,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375850820] [2021-11-25 19:05:53,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:53,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:05:53,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:05:53,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:05:53,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:05:53,272 INFO L87 Difference]: Start difference. First operand 2295 states and 3144 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-25 19:05:57,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:58,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:58,133 INFO L93 Difference]: Finished difference Result 5938 states and 8166 transitions. [2021-11-25 19:05:58,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:05:58,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 287 [2021-11-25 19:05:58,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:58,167 INFO L225 Difference]: With dead ends: 5938 [2021-11-25 19:05:58,167 INFO L226 Difference]: Without dead ends: 3700 [2021-11-25 19:05:58,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:05:58,181 INFO L933 BasicCegarLoop]: 1892 mSDtfsCounter, 1608 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 3418 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:58,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1610 Valid, 3418 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 511 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-25 19:05:58,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3700 states. [2021-11-25 19:05:58,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3700 to 3656. [2021-11-25 19:05:58,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3656 states, 2292 states have (on average 1.307591623036649) internal successors, (2997), 2325 states have internal predecessors, (2997), 1016 states have call successors, (1016), 346 states have call predecessors, (1016), 345 states have return successors, (1014), 994 states have call predecessors, (1014), 1012 states have call successors, (1014) [2021-11-25 19:05:58,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 5027 transitions. [2021-11-25 19:05:58,481 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 5027 transitions. Word has length 287 [2021-11-25 19:05:58,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:58,482 INFO L470 AbstractCegarLoop]: Abstraction has 3656 states and 5027 transitions. [2021-11-25 19:05:58,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-25 19:05:58,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 5027 transitions. [2021-11-25 19:05:58,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-25 19:05:58,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:58,491 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:05:58,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:05:58,491 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:05:58,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:58,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1388660108, now seen corresponding path program 1 times [2021-11-25 19:05:58,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:05:58,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455734282] [2021-11-25 19:05:58,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:58,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:05:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:58,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2021-11-25 19:05:58,807 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:05:58,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455734282] [2021-11-25 19:05:58,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455734282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:58,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:58,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:05:58,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133535175] [2021-11-25 19:05:58,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:58,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:05:58,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:05:58,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:05:58,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:05:58,811 INFO L87 Difference]: Start difference. First operand 3656 states and 5027 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-25 19:06:06,173 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:07,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:10,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:10,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:06:10,444 INFO L93 Difference]: Finished difference Result 6750 states and 9317 transitions. [2021-11-25 19:06:10,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:06:10,445 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 [2021-11-25 19:06:10,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:06:10,547 INFO L225 Difference]: With dead ends: 6750 [2021-11-25 19:06:10,547 INFO L226 Difference]: Without dead ends: 6746 [2021-11-25 19:06:10,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:06:10,553 INFO L933 BasicCegarLoop]: 1985 mSDtfsCounter, 1573 mSDsluCounter, 6201 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 7434 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:06:10,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 7434 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1030 Invalid, 2 Unknown, 0 Unchecked, 11.3s Time] [2021-11-25 19:06:10,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6746 states. [2021-11-25 19:06:10,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6746 to 6732. [2021-11-25 19:06:10,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6732 states, 4202 states have (on average 1.3129462160875773) internal successors, (5517), 4275 states have internal predecessors, (5517), 1887 states have call successors, (1887), 648 states have call predecessors, (1887), 640 states have return successors, (1897), 1826 states have call predecessors, (1897), 1879 states have call successors, (1897) [2021-11-25 19:06:10,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6732 states to 6732 states and 9301 transitions. [2021-11-25 19:06:10,991 INFO L78 Accepts]: Start accepts. Automaton has 6732 states and 9301 transitions. Word has length 281 [2021-11-25 19:06:10,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:06:10,992 INFO L470 AbstractCegarLoop]: Abstraction has 6732 states and 9301 transitions. [2021-11-25 19:06:10,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-25 19:06:10,992 INFO L276 IsEmpty]: Start isEmpty. Operand 6732 states and 9301 transitions. [2021-11-25 19:06:11,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-11-25 19:06:11,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:06:11,002 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:06:11,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:06:11,003 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:06:11,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:06:11,003 INFO L85 PathProgramCache]: Analyzing trace with hash 580778201, now seen corresponding path program 1 times [2021-11-25 19:06:11,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:06:11,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262728645] [2021-11-25 19:06:11,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:06:11,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:06:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:06:11,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1598 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1588 trivial. 0 not checked. [2021-11-25 19:06:11,341 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:06:11,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262728645] [2021-11-25 19:06:11,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262728645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:06:11,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:06:11,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:06:11,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340840907] [2021-11-25 19:06:11,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:06:11,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:06:11,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:06:11,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:06:11,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:06:11,344 INFO L87 Difference]: Start difference. First operand 6732 states and 9301 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-25 19:06:15,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:17,957 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:20,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:21,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:06:21,920 INFO L93 Difference]: Finished difference Result 13188 states and 18245 transitions. [2021-11-25 19:06:21,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:06:21,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 286 [2021-11-25 19:06:21,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:06:22,027 INFO L225 Difference]: With dead ends: 13188 [2021-11-25 19:06:22,028 INFO L226 Difference]: Without dead ends: 13074 [2021-11-25 19:06:22,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:06:22,041 INFO L933 BasicCegarLoop]: 1911 mSDtfsCounter, 1721 mSDsluCounter, 6012 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 7212 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:06:22,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1721 Valid, 7212 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 960 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2021-11-25 19:06:22,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13074 states. [2021-11-25 19:06:22,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13074 to 13062. [2021-11-25 19:06:22,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13062 states, 8157 states have (on average 1.3153120019615054) internal successors, (10729), 8290 states have internal predecessors, (10729), 3669 states have call successors, (3669), 1247 states have call predecessors, (3669), 1233 states have return successors, (3693), 3556 states have call predecessors, (3693), 3657 states have call successors, (3693) [2021-11-25 19:06:22,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13062 states to 13062 states and 18091 transitions. [2021-11-25 19:06:22,999 INFO L78 Accepts]: Start accepts. Automaton has 13062 states and 18091 transitions. Word has length 286 [2021-11-25 19:06:23,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:06:23,000 INFO L470 AbstractCegarLoop]: Abstraction has 13062 states and 18091 transitions. [2021-11-25 19:06:23,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-25 19:06:23,001 INFO L276 IsEmpty]: Start isEmpty. Operand 13062 states and 18091 transitions. [2021-11-25 19:06:23,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-25 19:06:23,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:06:23,010 INFO L514 BasicCegarLoop]: trace histogram [25, 20, 20, 20, 20, 20, 20, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:06:23,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:06:23,011 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:06:23,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:06:23,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1629937378, now seen corresponding path program 1 times [2021-11-25 19:06:23,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:06:23,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195556295] [2021-11-25 19:06:23,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:06:23,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:06:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:06:23,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1761 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1754 trivial. 0 not checked. [2021-11-25 19:06:23,314 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:06:23,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195556295] [2021-11-25 19:06:23,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195556295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:06:23,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:06:23,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:06:23,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187054196] [2021-11-25 19:06:23,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:06:23,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:06:23,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:06:23,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:06:23,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:06:23,317 INFO L87 Difference]: Start difference. First operand 13062 states and 18091 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-25 19:06:28,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:30,127 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:30,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:06:30,435 INFO L93 Difference]: Finished difference Result 29618 states and 40817 transitions. [2021-11-25 19:06:30,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:06:30,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 300 [2021-11-25 19:06:30,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:06:30,540 INFO L225 Difference]: With dead ends: 29618 [2021-11-25 19:06:30,540 INFO L226 Difference]: Without dead ends: 16838 [2021-11-25 19:06:30,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:06:30,608 INFO L933 BasicCegarLoop]: 2165 mSDtfsCounter, 759 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 3646 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:06:30,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 3646 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 642 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-25 19:06:30,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16838 states. [2021-11-25 19:06:31,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16838 to 16675. [2021-11-25 19:06:31,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16675 states, 10393 states have (on average 1.3066487058597134) internal successors, (13580), 10567 states have internal predecessors, (13580), 4619 states have call successors, (4619), 1676 states have call predecessors, (4619), 1660 states have return successors, (4647), 4466 states have call predecessors, (4647), 4607 states have call successors, (4647) [2021-11-25 19:06:31,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16675 states to 16675 states and 22846 transitions. [2021-11-25 19:06:31,951 INFO L78 Accepts]: Start accepts. Automaton has 16675 states and 22846 transitions. Word has length 300 [2021-11-25 19:06:31,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:06:31,952 INFO L470 AbstractCegarLoop]: Abstraction has 16675 states and 22846 transitions. [2021-11-25 19:06:31,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-25 19:06:31,952 INFO L276 IsEmpty]: Start isEmpty. Operand 16675 states and 22846 transitions. [2021-11-25 19:06:31,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2021-11-25 19:06:31,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:06:31,964 INFO L514 BasicCegarLoop]: trace histogram [25, 20, 20, 20, 20, 20, 20, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:06:31,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 19:06:31,964 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:06:31,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:06:31,965 INFO L85 PathProgramCache]: Analyzing trace with hash -999250466, now seen corresponding path program 1 times [2021-11-25 19:06:31,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:06:31,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708744911] [2021-11-25 19:06:31,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:06:31,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:06:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:06:32,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1829 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1822 trivial. 0 not checked. [2021-11-25 19:06:32,217 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:06:32,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708744911] [2021-11-25 19:06:32,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708744911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:06:32,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:06:32,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:06:32,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859067230] [2021-11-25 19:06:32,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:06:32,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:06:32,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:06:32,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:06:32,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:06:32,220 INFO L87 Difference]: Start difference. First operand 16675 states and 22846 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-25 19:06:36,452 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:39,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:40,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:06:40,462 INFO L93 Difference]: Finished difference Result 40688 states and 55790 transitions. [2021-11-25 19:06:40,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:06:40,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 351 [2021-11-25 19:06:40,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:06:40,601 INFO L225 Difference]: With dead ends: 40688 [2021-11-25 19:06:40,601 INFO L226 Difference]: Without dead ends: 24295 [2021-11-25 19:06:40,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:06:40,666 INFO L933 BasicCegarLoop]: 2945 mSDtfsCounter, 1627 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 4460 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:06:40,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1627 Valid, 4460 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 729 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-11-25 19:06:40,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24295 states. [2021-11-25 19:06:42,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24295 to 24067. [2021-11-25 19:06:42,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24067 states, 15037 states have (on average 1.3075746491986433) internal successors, (19662), 15293 states have internal predecessors, (19662), 6626 states have call successors, (6626), 2421 states have call predecessors, (6626), 2401 states have return successors, (6666), 6400 states have call predecessors, (6666), 6614 states have call successors, (6666) [2021-11-25 19:06:42,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24067 states to 24067 states and 32954 transitions. [2021-11-25 19:06:42,373 INFO L78 Accepts]: Start accepts. Automaton has 24067 states and 32954 transitions. Word has length 351 [2021-11-25 19:06:42,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:06:42,374 INFO L470 AbstractCegarLoop]: Abstraction has 24067 states and 32954 transitions. [2021-11-25 19:06:42,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-25 19:06:42,374 INFO L276 IsEmpty]: Start isEmpty. Operand 24067 states and 32954 transitions. [2021-11-25 19:06:42,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2021-11-25 19:06:42,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:06:42,399 INFO L514 BasicCegarLoop]: trace histogram [28, 20, 20, 20, 20, 20, 20, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:06:42,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 19:06:42,400 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:06:42,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:06:42,400 INFO L85 PathProgramCache]: Analyzing trace with hash -668302186, now seen corresponding path program 1 times [2021-11-25 19:06:42,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:06:42,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979963451] [2021-11-25 19:06:42,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:06:42,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:06:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:06:42,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2151 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2132 trivial. 0 not checked. [2021-11-25 19:06:42,694 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:06:42,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979963451] [2021-11-25 19:06:42,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979963451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:06:42,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:06:42,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:06:42,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278100429] [2021-11-25 19:06:42,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:06:42,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:06:42,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:06:42,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:06:42,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:06:42,697 INFO L87 Difference]: Start difference. First operand 24067 states and 32954 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2021-11-25 19:06:47,883 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:49,786 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:52,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:53,741 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:55,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:58,501 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:59,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:06:59,787 INFO L93 Difference]: Finished difference Result 55826 states and 76336 transitions. [2021-11-25 19:06:59,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:06:59,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 409 [2021-11-25 19:06:59,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:06:59,994 INFO L225 Difference]: With dead ends: 55826 [2021-11-25 19:06:59,994 INFO L226 Difference]: Without dead ends: 32041 [2021-11-25 19:07:00,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:07:00,099 INFO L933 BasicCegarLoop]: 2945 mSDtfsCounter, 1675 mSDsluCounter, 4397 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 6674 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:07:00,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1677 Valid, 6674 Invalid, 1886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1873 Invalid, 3 Unknown, 0 Unchecked, 15.5s Time] [2021-11-25 19:07:00,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32041 states. [2021-11-25 19:07:01,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32041 to 31801. [2021-11-25 19:07:01,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31801 states, 19879 states have (on average 1.3074098294682832) internal successors, (25990), 20221 states have internal predecessors, (25990), 8679 states have call successors, (8679), 3264 states have call predecessors, (8679), 3240 states have return successors, (8735), 8376 states have call predecessors, (8735), 8667 states have call successors, (8735) [2021-11-25 19:07:02,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31801 states to 31801 states and 43404 transitions. [2021-11-25 19:07:02,147 INFO L78 Accepts]: Start accepts. Automaton has 31801 states and 43404 transitions. Word has length 409 [2021-11-25 19:07:02,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:07:02,148 INFO L470 AbstractCegarLoop]: Abstraction has 31801 states and 43404 transitions. [2021-11-25 19:07:02,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2021-11-25 19:07:02,148 INFO L276 IsEmpty]: Start isEmpty. Operand 31801 states and 43404 transitions. [2021-11-25 19:07:02,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2021-11-25 19:07:02,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:07:02,173 INFO L514 BasicCegarLoop]: trace histogram [27, 20, 20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:07:02,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 19:07:02,173 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:07:02,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:07:02,174 INFO L85 PathProgramCache]: Analyzing trace with hash -461604208, now seen corresponding path program 1 times [2021-11-25 19:07:02,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:07:02,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686038613] [2021-11-25 19:07:02,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:02,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:07:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:02,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2775 trivial. 0 not checked. [2021-11-25 19:07:02,673 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:07:02,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686038613] [2021-11-25 19:07:02,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686038613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:07:02,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:07:02,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:07:02,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516367431] [2021-11-25 19:07:02,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:07:02,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:07:02,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:07:02,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:07:02,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:07:02,677 INFO L87 Difference]: Start difference. First operand 31801 states and 43404 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-25 19:07:05,108 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:09,437 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:11,819 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:13,009 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:15,958 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:17,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:19,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:07:19,561 INFO L93 Difference]: Finished difference Result 31907 states and 43504 transitions. [2021-11-25 19:07:19,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:07:19,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 476 [2021-11-25 19:07:19,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:07:19,769 INFO L225 Difference]: With dead ends: 31907 [2021-11-25 19:07:19,769 INFO L226 Difference]: Without dead ends: 31905 [2021-11-25 19:07:19,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:07:19,799 INFO L933 BasicCegarLoop]: 2055 mSDtfsCounter, 1542 mSDsluCounter, 6365 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 7654 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:07:19,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1544 Valid, 7654 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1049 Invalid, 2 Unknown, 0 Unchecked, 15.7s Time] [2021-11-25 19:07:19,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31905 states. [2021-11-25 19:07:21,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31905 to 31877. [2021-11-25 19:07:21,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31877 states, 19913 states have (on average 1.306282328127354) internal successors, (26012), 20253 states have internal predecessors, (26012), 8699 states have call successors, (8699), 3284 states have call predecessors, (8699), 3262 states have return successors, (8753), 8400 states have call predecessors, (8753), 8687 states have call successors, (8753) [2021-11-25 19:07:21,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31877 states to 31877 states and 43464 transitions. [2021-11-25 19:07:21,572 INFO L78 Accepts]: Start accepts. Automaton has 31877 states and 43464 transitions. Word has length 476 [2021-11-25 19:07:21,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:07:21,574 INFO L470 AbstractCegarLoop]: Abstraction has 31877 states and 43464 transitions. [2021-11-25 19:07:21,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-25 19:07:21,574 INFO L276 IsEmpty]: Start isEmpty. Operand 31877 states and 43464 transitions. [2021-11-25 19:07:21,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2021-11-25 19:07:21,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:07:21,603 INFO L514 BasicCegarLoop]: trace histogram [27, 20, 20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:07:21,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 19:07:21,603 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:07:21,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:07:21,604 INFO L85 PathProgramCache]: Analyzing trace with hash 636847332, now seen corresponding path program 1 times [2021-11-25 19:07:21,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:07:21,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694107142] [2021-11-25 19:07:21,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:21,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:07:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:21,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2776 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 2754 trivial. 0 not checked. [2021-11-25 19:07:21,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:07:21,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694107142] [2021-11-25 19:07:21,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694107142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:07:21,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:07:21,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:07:21,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262415351] [2021-11-25 19:07:21,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:07:21,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:07:21,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:07:21,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:07:21,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:07:21,958 INFO L87 Difference]: Start difference. First operand 31877 states and 43464 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-25 19:07:27,115 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:29,619 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:31,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:07:31,535 INFO L93 Difference]: Finished difference Result 73368 states and 99429 transitions. [2021-11-25 19:07:31,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:07:31,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 486 [2021-11-25 19:07:31,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:07:31,761 INFO L225 Difference]: With dead ends: 73368 [2021-11-25 19:07:31,761 INFO L226 Difference]: Without dead ends: 41773 [2021-11-25 19:07:31,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:07:31,879 INFO L933 BasicCegarLoop]: 2393 mSDtfsCounter, 1225 mSDsluCounter, 3747 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 5621 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:07:31,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1227 Valid, 5621 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1400 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2021-11-25 19:07:31,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41773 states. [2021-11-25 19:07:33,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41773 to 41456. [2021-11-25 19:07:33,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41456 states, 25805 states have (on average 1.2992443324937029) internal successors, (33527), 26240 states have internal predecessors, (33527), 11139 states have call successors, (11139), 4541 states have call predecessors, (11139), 4509 states have return successors, (11209), 10746 states have call predecessors, (11209), 11127 states have call successors, (11209) [2021-11-25 19:07:34,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41456 states to 41456 states and 55875 transitions. [2021-11-25 19:07:34,330 INFO L78 Accepts]: Start accepts. Automaton has 41456 states and 55875 transitions. Word has length 486 [2021-11-25 19:07:34,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:07:34,331 INFO L470 AbstractCegarLoop]: Abstraction has 41456 states and 55875 transitions. [2021-11-25 19:07:34,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-25 19:07:34,332 INFO L276 IsEmpty]: Start isEmpty. Operand 41456 states and 55875 transitions. [2021-11-25 19:07:34,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2021-11-25 19:07:34,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:07:34,368 INFO L514 BasicCegarLoop]: trace histogram [31, 20, 20, 20, 20, 20, 20, 12, 12, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:07:34,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 19:07:34,369 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:07:34,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:07:34,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1191199598, now seen corresponding path program 1 times [2021-11-25 19:07:34,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:07:34,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825087365] [2021-11-25 19:07:34,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:34,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:07:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:34,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2393 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 2361 trivial. 0 not checked. [2021-11-25 19:07:34,714 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:07:34,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825087365] [2021-11-25 19:07:34,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825087365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:07:34,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:07:34,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:07:34,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165963737] [2021-11-25 19:07:34,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:07:34,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:07:34,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:07:34,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:07:34,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:07:34,720 INFO L87 Difference]: Start difference. First operand 41456 states and 55875 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-25 19:07:38,650 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:40,271 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:42,955 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:46,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:48,840 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:52,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:53,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:07:53,678 INFO L93 Difference]: Finished difference Result 92712 states and 124953 transitions. [2021-11-25 19:07:53,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:07:53,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 460 [2021-11-25 19:07:53,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:07:53,950 INFO L225 Difference]: With dead ends: 92712 [2021-11-25 19:07:53,950 INFO L226 Difference]: Without dead ends: 51538 [2021-11-25 19:07:54,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:07:54,112 INFO L933 BasicCegarLoop]: 2949 mSDtfsCounter, 1640 mSDsluCounter, 4439 mSDsCounter, 0 mSdLazyCounter, 1893 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 6713 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1893 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:07:54,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1640 Valid, 6713 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1893 Invalid, 2 Unknown, 0 Unchecked, 16.7s Time] [2021-11-25 19:07:54,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51538 states. [2021-11-25 19:07:56,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51538 to 51241. [2021-11-25 19:07:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51241 states, 31941 states have (on average 1.300021915406531) internal successors, (41524), 32479 states have internal predecessors, (41524), 13707 states have call successors, (13707), 5628 states have call predecessors, (13707), 5590 states have return successors, (13791), 13220 states have call predecessors, (13791), 13695 states have call successors, (13791) [2021-11-25 19:07:57,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51241 states to 51241 states and 69022 transitions. [2021-11-25 19:07:57,083 INFO L78 Accepts]: Start accepts. Automaton has 51241 states and 69022 transitions. Word has length 460 [2021-11-25 19:07:57,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:07:57,084 INFO L470 AbstractCegarLoop]: Abstraction has 51241 states and 69022 transitions. [2021-11-25 19:07:57,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-25 19:07:57,084 INFO L276 IsEmpty]: Start isEmpty. Operand 51241 states and 69022 transitions. [2021-11-25 19:07:57,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2021-11-25 19:07:57,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:07:57,115 INFO L514 BasicCegarLoop]: trace histogram [28, 20, 20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:07:57,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 19:07:57,115 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:07:57,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:07:57,116 INFO L85 PathProgramCache]: Analyzing trace with hash 2076155763, now seen corresponding path program 1 times [2021-11-25 19:07:57,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:07:57,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802574634] [2021-11-25 19:07:57,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:57,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:07:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2829 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2829 trivial. 0 not checked. [2021-11-25 19:07:57,536 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:07:57,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802574634] [2021-11-25 19:07:57,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802574634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:07:57,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:07:57,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:07:57,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35470168] [2021-11-25 19:07:57,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:07:57,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:07:57,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:07:57,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:07:57,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:07:57,540 INFO L87 Difference]: Start difference. First operand 51241 states and 69022 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (49), 2 states have call predecessors, (49), 1 states have call successors, (49) [2021-11-25 19:08:01,824 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:08:04,212 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:08:06,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:08:09,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:09,809 INFO L93 Difference]: Finished difference Result 102300 states and 137832 transitions. [2021-11-25 19:08:09,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:08:09,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (49), 2 states have call predecessors, (49), 1 states have call successors, (49) Word has length 502 [2021-11-25 19:08:09,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:10,185 INFO L225 Difference]: With dead ends: 102300 [2021-11-25 19:08:10,186 INFO L226 Difference]: Without dead ends: 51341 [2021-11-25 19:08:10,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:08:10,358 INFO L933 BasicCegarLoop]: 1548 mSDtfsCounter, 1 mSDsluCounter, 5347 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6183 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:10,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 6183 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 966 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2021-11-25 19:08:10,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51341 states. [2021-11-25 19:08:12,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51341 to 51293. [2021-11-25 19:08:12,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51293 states, 31977 states have (on average 1.2996841479813617) internal successors, (41560), 32521 states have internal predecessors, (41560), 13707 states have call successors, (13707), 5628 states have call predecessors, (13707), 5606 states have return successors, (13817), 13230 states have call predecessors, (13817), 13695 states have call successors, (13817) [2021-11-25 19:08:13,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51293 states to 51293 states and 69084 transitions. [2021-11-25 19:08:13,112 INFO L78 Accepts]: Start accepts. Automaton has 51293 states and 69084 transitions. Word has length 502 [2021-11-25 19:08:13,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:13,114 INFO L470 AbstractCegarLoop]: Abstraction has 51293 states and 69084 transitions. [2021-11-25 19:08:13,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (49), 2 states have call predecessors, (49), 1 states have call successors, (49) [2021-11-25 19:08:13,114 INFO L276 IsEmpty]: Start isEmpty. Operand 51293 states and 69084 transitions. [2021-11-25 19:08:13,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2021-11-25 19:08:13,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:13,147 INFO L514 BasicCegarLoop]: trace histogram [28, 20, 20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:08:13,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 19:08:13,148 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:08:13,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:13,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1578405251, now seen corresponding path program 1 times [2021-11-25 19:08:13,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:08:13,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003004075] [2021-11-25 19:08:13,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:13,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:08:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:13,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2829 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2829 trivial. 0 not checked. [2021-11-25 19:08:13,875 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:08:13,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003004075] [2021-11-25 19:08:13,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003004075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:08:13,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:08:13,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:08:13,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027771784] [2021-11-25 19:08:13,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:08:13,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:08:13,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:08:13,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:08:13,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:08:13,878 INFO L87 Difference]: Start difference. First operand 51293 states and 69084 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 2 states have call predecessors, (50), 1 states have call successors, (50) [2021-11-25 19:08:18,230 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:08:21,187 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:08:23,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:23,696 INFO L93 Difference]: Finished difference Result 103984 states and 140532 transitions. [2021-11-25 19:08:23,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:08:23,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 2 states have call predecessors, (50), 1 states have call successors, (50) Word has length 508 [2021-11-25 19:08:23,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:23,996 INFO L225 Difference]: With dead ends: 103984 [2021-11-25 19:08:23,996 INFO L226 Difference]: Without dead ends: 52423 [2021-11-25 19:08:24,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:08:24,182 INFO L933 BasicCegarLoop]: 1556 mSDtfsCounter, 160 mSDsluCounter, 3444 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 4529 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:24,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 4529 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 779 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-11-25 19:08:24,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52423 states. [2021-11-25 19:08:26,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52423 to 52423. [2021-11-25 19:08:26,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52423 states, 32777 states have (on average 1.301827500991549) internal successors, (42670), 33341 states have internal predecessors, (42670), 14017 states have call successors, (14017), 5648 states have call predecessors, (14017), 5626 states have return successors, (14143), 13540 states have call predecessors, (14143), 14005 states have call successors, (14143) [2021-11-25 19:08:26,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52423 states to 52423 states and 70830 transitions. [2021-11-25 19:08:26,974 INFO L78 Accepts]: Start accepts. Automaton has 52423 states and 70830 transitions. Word has length 508 [2021-11-25 19:08:26,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:26,975 INFO L470 AbstractCegarLoop]: Abstraction has 52423 states and 70830 transitions. [2021-11-25 19:08:26,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 2 states have call predecessors, (50), 1 states have call successors, (50) [2021-11-25 19:08:26,975 INFO L276 IsEmpty]: Start isEmpty. Operand 52423 states and 70830 transitions. [2021-11-25 19:08:26,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2021-11-25 19:08:26,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:26,993 INFO L514 BasicCegarLoop]: trace histogram [28, 20, 20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:08:26,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 19:08:26,994 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:08:26,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:26,995 INFO L85 PathProgramCache]: Analyzing trace with hash 2052671129, now seen corresponding path program 1 times [2021-11-25 19:08:26,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:08:26,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577990789] [2021-11-25 19:08:26,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:26,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:08:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:27,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2829 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 2805 trivial. 0 not checked. [2021-11-25 19:08:27,591 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:08:27,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577990789] [2021-11-25 19:08:27,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577990789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:08:27,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:08:27,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:08:27,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422332541] [2021-11-25 19:08:27,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:08:27,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:08:27,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:08:27,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:08:27,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:08:27,595 INFO L87 Difference]: Start difference. First operand 52423 states and 70830 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-25 19:08:34,404 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:08:36,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:08:39,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:39,608 INFO L93 Difference]: Finished difference Result 146499 states and 198435 transitions. [2021-11-25 19:08:39,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:08:39,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 509 [2021-11-25 19:08:39,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:40,281 INFO L225 Difference]: With dead ends: 146499 [2021-11-25 19:08:40,282 INFO L226 Difference]: Without dead ends: 94358 [2021-11-25 19:08:40,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:08:40,446 INFO L933 BasicCegarLoop]: 2891 mSDtfsCounter, 1560 mSDsluCounter, 1748 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 4412 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:40,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1560 Valid, 4412 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 713 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2021-11-25 19:08:40,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94358 states. [2021-11-25 19:08:45,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94358 to 94277. [2021-11-25 19:08:45,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94277 states, 59909 states have (on average 1.3030763324375303) internal successors, (78066), 60647 states have internal predecessors, (78066), 24439 states have call successors, (24439), 9966 states have call predecessors, (24439), 9926 states have return successors, (24703), 23850 states have call predecessors, (24703), 24427 states have call successors, (24703)