./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-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b525e26a-e225-4429-8dc0-0ae529b0ade0/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b525e26a-e225-4429-8dc0-0ae529b0ade0/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b525e26a-e225-4429-8dc0-0ae529b0ade0/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b525e26a-e225-4429-8dc0-0ae529b0ade0/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b525e26a-e225-4429-8dc0-0ae529b0ade0/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b525e26a-e225-4429-8dc0-0ae529b0ade0/bin/utaipan-EQgc7hIp5V --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 34f21538f85eb9cdaa60d9a1e57757d7a04f90c8b459e1dcc8d118be409846cb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:41:01,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:41:01,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:41:01,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:41:01,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:41:01,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:41:01,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:41:01,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:41:01,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:41:01,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:41:01,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:41:01,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:41:01,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:41:01,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:41:01,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:41:01,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:41:01,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:41:01,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:41:01,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:41:01,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:41:01,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:41:01,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:41:01,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:41:01,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:41:01,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:41:01,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:41:01,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:41:01,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:41:01,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:41:01,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:41:01,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:41:01,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:41:01,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:41:01,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:41:01,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:41:01,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:41:01,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:41:01,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:41:01,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:41:01,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:41:01,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:41:01,345 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b525e26a-e225-4429-8dc0-0ae529b0ade0/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:41:01,399 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:41:01,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:41:01,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:41:01,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:41:01,411 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:41:01,411 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:41:01,412 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:41:01,412 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:41:01,412 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:41:01,413 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:41:01,414 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:41:01,414 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:41:01,414 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:41:01,415 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:41:01,415 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:41:01,415 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:41:01,415 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:41:01,416 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:41:01,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:41:01,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:41:01,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:41:01,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:41:01,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:41:01,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:41:01,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:41:01,419 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:41:01,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:41:01,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:41:01,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:41:01,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:41:01,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:41:01,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:41:01,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:41:01,423 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:41:01,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:41:01,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:41:01,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:41:01,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:41:01,425 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_b525e26a-e225-4429-8dc0-0ae529b0ade0/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b525e26a-e225-4429-8dc0-0ae529b0ade0/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34f21538f85eb9cdaa60d9a1e57757d7a04f90c8b459e1dcc8d118be409846cb [2021-11-23 03:41:01,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:41:01,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:41:01,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:41:01,722 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:41:01,723 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:41:01,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b525e26a-e225-4429-8dc0-0ae529b0ade0/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-23 03:41:01,812 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b525e26a-e225-4429-8dc0-0ae529b0ade0/bin/utaipan-EQgc7hIp5V/data/e55a8d290/3175b20332aa4f93b37a70c1e9652a78/FLAG847697cc6 [2021-11-23 03:41:02,798 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:41:02,799 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b525e26a-e225-4429-8dc0-0ae529b0ade0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-23 03:41:02,873 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b525e26a-e225-4429-8dc0-0ae529b0ade0/bin/utaipan-EQgc7hIp5V/data/e55a8d290/3175b20332aa4f93b37a70c1e9652a78/FLAG847697cc6 [2021-11-23 03:41:03,195 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b525e26a-e225-4429-8dc0-0ae529b0ade0/bin/utaipan-EQgc7hIp5V/data/e55a8d290/3175b20332aa4f93b37a70c1e9652a78 [2021-11-23 03:41:03,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:41:03,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:41:03,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:41:03,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:41:03,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:41:03,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:03" (1/1) ... [2021-11-23 03:41:03,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10ef1ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:03, skipping insertion in model container [2021-11-23 03:41:03,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:03" (1/1) ... [2021-11-23 03:41:03,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:41:03,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:41:06,954 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_b525e26a-e225-4429-8dc0-0ae529b0ade0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325823,325836] [2021-11-23 03:41:06,957 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_b525e26a-e225-4429-8dc0-0ae529b0ade0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325992,326005] [2021-11-23 03:41:06,958 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_b525e26a-e225-4429-8dc0-0ae529b0ade0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326159,326172] [2021-11-23 03:41:06,958 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_b525e26a-e225-4429-8dc0-0ae529b0ade0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326327,326340] [2021-11-23 03:41:07,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:41:07,141 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:41:07,664 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_b525e26a-e225-4429-8dc0-0ae529b0ade0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325823,325836] [2021-11-23 03:41:07,665 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_b525e26a-e225-4429-8dc0-0ae529b0ade0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325992,326005] [2021-11-23 03:41:07,665 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_b525e26a-e225-4429-8dc0-0ae529b0ade0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326159,326172] [2021-11-23 03:41:07,666 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_b525e26a-e225-4429-8dc0-0ae529b0ade0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326327,326340] [2021-11-23 03:41:07,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:41:08,058 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:41:08,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:08 WrapperNode [2021-11-23 03:41:08,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:41:08,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:41:08,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:41:08,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:41:08,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:08" (1/1) ... [2021-11-23 03:41:08,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:08" (1/1) ... [2021-11-23 03:41:08,468 INFO L137 Inliner]: procedures = 424, calls = 2565, calls flagged for inlining = 194, calls inlined = 144, statements flattened = 4931 [2021-11-23 03:41:08,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:41:08,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:41:08,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:41:08,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:41:08,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:08" (1/1) ... [2021-11-23 03:41:08,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:08" (1/1) ... [2021-11-23 03:41:08,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:08" (1/1) ... [2021-11-23 03:41:08,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:08" (1/1) ... [2021-11-23 03:41:08,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:08" (1/1) ... [2021-11-23 03:41:08,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:08" (1/1) ... [2021-11-23 03:41:08,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:08" (1/1) ... [2021-11-23 03:41:08,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:41:08,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:41:08,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:41:08,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:41:08,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:08" (1/1) ... [2021-11-23 03:41:08,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:41:08,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b525e26a-e225-4429-8dc0-0ae529b0ade0/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:41:08,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b525e26a-e225-4429-8dc0-0ae529b0ade0/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:41:08,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b525e26a-e225-4429-8dc0-0ae529b0ade0/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:41:08,877 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-23 03:41:08,878 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-23 03:41:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 03:41:08,878 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 03:41:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-11-23 03:41:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-11-23 03:41:08,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:41:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:41:08,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 03:41:08,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 03:41:08,880 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-23 03:41:08,880 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-23 03:41:08,880 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_stereo_mono [2021-11-23 03:41:08,880 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_stereo_mono [2021-11-23 03:41:08,881 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 03:41:08,881 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 03:41:08,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_59 [2021-11-23 03:41:08,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_59 [2021-11-23 03:41:08,881 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_len [2021-11-23 03:41:08,882 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_len [2021-11-23 03:41:08,882 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2021-11-23 03:41:08,882 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2021-11-23 03:41:08,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 03:41:08,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 03:41:08,883 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-23 03:41:08,883 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-23 03:41:08,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_49 [2021-11-23 03:41:08,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_49 [2021-11-23 03:41:08,884 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2021-11-23 03:41:08,884 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2021-11-23 03:41:08,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 03:41:08,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 03:41:08,885 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 03:41:08,885 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 03:41:08,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:41:08,886 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-23 03:41:08,886 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-23 03:41:08,886 INFO L130 BoogieDeclarations]: Found specification of procedure st_unregister [2021-11-23 03:41:08,886 INFO L138 BoogieDeclarations]: Found implementation of procedure st_unregister [2021-11-23 03:41:08,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:41:08,887 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-23 03:41:08,887 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-23 03:41:08,887 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-23 03:41:08,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-23 03:41:08,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:41:08,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 03:41:08,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 03:41:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:41:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_release [2021-11-23 03:41:08,891 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_release [2021-11-23 03:41:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 03:41:08,892 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 03:41:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 03:41:08,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 03:41:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 03:41:08,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 03:41:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_rds_mode [2021-11-23 03:41:08,893 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_rds_mode [2021-11-23 03:41:08,894 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2021-11-23 03:41:08,894 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2021-11-23 03:41:08,894 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata [2021-11-23 03:41:08,894 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata [2021-11-23 03:41:08,894 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_rds_mode [2021-11-23 03:41:08,895 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_rds_mode [2021-11-23 03:41:08,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 03:41:08,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 03:41:08,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:41:08,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-23 03:41:08,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-23 03:41:08,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 03:41:08,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 03:41:08,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-23 03:41:08,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-23 03:41:08,897 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-23 03:41:08,897 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-23 03:41:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:41:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 03:41:08,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 03:41:08,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:41:08,901 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-23 03:41:08,901 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-23 03:41:08,901 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-23 03:41:08,901 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-23 03:41:08,902 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_preemph_filter [2021-11-23 03:41:08,903 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_preemph_filter [2021-11-23 03:41:08,903 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-11-23 03:41:08,903 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-11-23 03:41:08,904 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-23 03:41:08,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-23 03:41:08,904 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-23 03:41:08,905 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-23 03:41:08,905 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-23 03:41:08,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-23 03:41:08,905 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 03:41:08,905 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 03:41:08,905 INFO L130 BoogieDeclarations]: Found specification of procedure fm_g_volatile_ctrl [2021-11-23 03:41:08,906 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_g_volatile_ctrl [2021-11-23 03:41:08,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:41:08,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:41:08,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-23 03:41:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-23 03:41:08,907 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-23 03:41:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-23 03:41:08,907 INFO L130 BoogieDeclarations]: Found specification of procedure fm_config_rx_mute_reg [2021-11-23 03:41:08,908 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_config_rx_mute_reg [2021-11-23 03:41:08,909 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2021-11-23 03:41:08,911 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2021-11-23 03:41:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:41:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:41:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_data_mode [2021-11-23 03:41:08,913 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_data_mode [2021-11-23 03:41:08,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 03:41:08,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 03:41:08,914 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_pwr_lvl [2021-11-23 03:41:08,914 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_pwr_lvl [2021-11-23 03:41:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 03:41:08,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 03:41:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-11-23 03:41:08,921 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-11-23 03:41:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_prepare [2021-11-23 03:41:08,922 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_prepare [2021-11-23 03:41:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_send_cmd [2021-11-23 03:41:08,922 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_send_cmd [2021-11-23 03:41:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2021-11-23 03:41:08,922 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2021-11-23 03:41:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-11-23 03:41:08,923 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-11-23 03:41:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_resp_skb_lock_of_fmdev [2021-11-23 03:41:08,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_resp_skb_lock_of_fmdev [2021-11-23 03:41:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 03:41:08,923 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 03:41:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure fm_send_cmd [2021-11-23 03:41:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_send_cmd [2021-11-23 03:41:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 03:41:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 03:41:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 03:41:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 03:41:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call_stage [2021-11-23 03:41:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call_stage [2021-11-23 03:41:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-23 03:41:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-23 03:41:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2021-11-23 03:41:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2021-11-23 03:41:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:41:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2021-11-23 03:41:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2021-11-23 03:41:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:41:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_rds_cache [2021-11-23 03:41:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_rds_cache [2021-11-23 03:41:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_station_info [2021-11-23 03:41:08,927 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_station_info [2021-11-23 03:41:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_s_ctrl [2021-11-23 03:41:08,927 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_s_ctrl [2021-11-23 03:41:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:41:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rds_buff_lock_of_fmdev [2021-11-23 03:41:08,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rds_buff_lock_of_fmdev [2021-11-23 03:41:08,928 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-23 03:41:08,928 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-23 03:41:08,928 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2021-11-23 03:41:08,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2021-11-23 03:41:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure enable_xmit [2021-11-23 03:41:08,929 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_xmit [2021-11-23 03:41:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-23 03:41:08,929 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-23 03:41:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_volume [2021-11-23 03:41:08,930 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_volume [2021-11-23 03:41:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 03:41:08,930 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 03:41:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-23 03:41:08,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-23 03:41:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-23 03:41:08,931 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-23 03:41:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 03:41:08,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 03:41:08,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 03:41:08,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 03:41:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_text [2021-11-23 03:41:08,936 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_text [2021-11-23 03:41:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2021-11-23 03:41:08,938 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2021-11-23 03:41:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_release [2021-11-23 03:41:08,939 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_release [2021-11-23 03:41:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 03:41:08,939 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 03:41:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 03:41:08,939 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 03:41:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-11-23 03:41:08,939 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-11-23 03:41:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:41:08,940 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-23 03:41:08,940 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-23 03:41:08,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:41:08,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:41:08,940 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_open [2021-11-23 03:41:08,940 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_open [2021-11-23 03:41:08,940 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-23 03:41:08,940 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-23 03:41:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_freq [2021-11-23 03:41:08,941 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_freq [2021-11-23 03:41:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_mode [2021-11-23 03:41:08,941 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_mode [2021-11-23 03:41:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_write [2021-11-23 03:41:08,941 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_write [2021-11-23 03:41:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-23 03:41:08,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-23 03:41:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call [2021-11-23 03:41:08,942 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call [2021-11-23 03:41:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 03:41:08,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 03:41:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-23 03:41:08,942 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-23 03:41:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure fm_power_down [2021-11-23 03:41:08,942 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_power_down [2021-11-23 03:41:08,943 INFO L130 BoogieDeclarations]: Found specification of procedure fm_download_firmware [2021-11-23 03:41:08,943 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_download_firmware [2021-11-23 03:41:08,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:41:08,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 03:41:08,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 03:41:09,986 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:41:09,994 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:41:10,236 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 03:41:15,191 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 03:41:15,316 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:41:16,612 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:41:16,612 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:41:16,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:16 BoogieIcfgContainer [2021-11-23 03:41:16,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:41:16,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:41:16,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:41:16,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:41:16,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:41:03" (1/3) ... [2021-11-23 03:41:16,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d58bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:41:16, skipping insertion in model container [2021-11-23 03:41:16,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:08" (2/3) ... [2021-11-23 03:41:16,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d58bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:41:16, skipping insertion in model container [2021-11-23 03:41:16,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:16" (3/3) ... [2021-11-23 03:41:16,630 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-23 03:41:16,636 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:41:16,637 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-23 03:41:16,705 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:41:16,714 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 [2021-11-23 03:41:16,714 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 03:41:16,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 1364 states, 830 states have (on average 1.3457831325301204) internal successors, (1117), 846 states have internal predecessors, (1117), 431 states have call successors, (431), 101 states have call predecessors, (431), 100 states have return successors, (424), 421 states have call predecessors, (424), 424 states have call successors, (424) [2021-11-23 03:41:16,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-23 03:41:16,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:16,820 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] [2021-11-23 03:41:16,821 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:41:16,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:16,827 INFO L85 PathProgramCache]: Analyzing trace with hash -459651737, now seen corresponding path program 1 times [2021-11-23 03:41:16,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:16,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622554247] [2021-11-23 03:41:16,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:16,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:17,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-11-23 03:41:17,799 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:17,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622554247] [2021-11-23 03:41:17,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622554247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:17,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:17,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:41:17,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631685315] [2021-11-23 03:41:17,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:17,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:41:17,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:17,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:41:17,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:41:17,850 INFO L87 Difference]: Start difference. First operand has 1364 states, 830 states have (on average 1.3457831325301204) internal successors, (1117), 846 states have internal predecessors, (1117), 431 states have call successors, (431), 101 states have call predecessors, (431), 100 states have return successors, (424), 421 states have call predecessors, (424), 424 states have call successors, (424) 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) [2021-11-23 03:41:20,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:41:23,802 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:41:26,022 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:41:26,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:26,175 INFO L93 Difference]: Finished difference Result 3868 states and 5833 transitions. [2021-11-23 03:41:26,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:41:26,179 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 [2021-11-23 03:41:26,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:26,227 INFO L225 Difference]: With dead ends: 3868 [2021-11-23 03:41:26,227 INFO L226 Difference]: Without dead ends: 2532 [2021-11-23 03:41:26,250 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 [2021-11-23 03:41:26,254 INFO L933 BasicCegarLoop]: 2059 mSDtfsCounter, 1810 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 3654 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:26,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1810 Valid, 3654 Invalid, 542 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 530 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2021-11-23 03:41:26,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2021-11-23 03:41:26,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2528. [2021-11-23 03:41:26,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 1560 states have (on average 1.3429487179487178) internal successors, (2095), 1590 states have internal predecessors, (2095), 774 states have call successors, (774), 192 states have call predecessors, (774), 191 states have return successors, (770), 764 states have call predecessors, (770), 770 states have call successors, (770) [2021-11-23 03:41:26,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 3639 transitions. [2021-11-23 03:41:26,723 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 3639 transitions. Word has length 216 [2021-11-23 03:41:26,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:26,728 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 3639 transitions. [2021-11-23 03:41:26,728 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) [2021-11-23 03:41:26,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 3639 transitions. [2021-11-23 03:41:26,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-23 03:41:26,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:26,750 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] [2021-11-23 03:41:26,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:41:26,751 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:41:26,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:26,754 INFO L85 PathProgramCache]: Analyzing trace with hash -2069863399, now seen corresponding path program 1 times [2021-11-23 03:41:26,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:26,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816754425] [2021-11-23 03:41:26,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:26,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:27,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2021-11-23 03:41:27,119 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:27,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816754425] [2021-11-23 03:41:27,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816754425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:27,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:27,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:41:27,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457503002] [2021-11-23 03:41:27,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:27,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:41:27,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:27,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:41:27,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:41:27,123 INFO L87 Difference]: Start difference. First operand 2528 states and 3639 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-23 03:41:30,956 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 [] [2021-11-23 03:41:31,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:31,308 INFO L93 Difference]: Finished difference Result 4873 states and 6977 transitions. [2021-11-23 03:41:31,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:41:31,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 226 [2021-11-23 03:41:31,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:31,337 INFO L225 Difference]: With dead ends: 4873 [2021-11-23 03:41:31,338 INFO L226 Difference]: Without dead ends: 2384 [2021-11-23 03:41:31,355 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 [2021-11-23 03:41:31,357 INFO L933 BasicCegarLoop]: 1580 mSDtfsCounter, 1730 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:31,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1732 Valid, 1662 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 252 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2021-11-23 03:41:31,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2021-11-23 03:41:31,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 2380. [2021-11-23 03:41:31,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 1474 states have (on average 1.3351424694708276) internal successors, (1968), 1486 states have internal predecessors, (1968), 712 states have call successors, (712), 192 states have call predecessors, (712), 191 states have return successors, (708), 708 states have call predecessors, (708), 708 states have call successors, (708) [2021-11-23 03:41:31,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 3388 transitions. [2021-11-23 03:41:31,635 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 3388 transitions. Word has length 226 [2021-11-23 03:41:31,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:31,638 INFO L470 AbstractCegarLoop]: Abstraction has 2380 states and 3388 transitions. [2021-11-23 03:41:31,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-23 03:41:31,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 3388 transitions. [2021-11-23 03:41:31,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-23 03:41:31,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:31,647 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:41:31,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:41:31,648 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:41:31,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:31,649 INFO L85 PathProgramCache]: Analyzing trace with hash -245297999, now seen corresponding path program 1 times [2021-11-23 03:41:31,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:31,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455443220] [2021-11-23 03:41:31,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:31,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:31,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-11-23 03:41:31,964 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:31,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455443220] [2021-11-23 03:41:31,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455443220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:31,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:31,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:41:31,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889481812] [2021-11-23 03:41:31,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:31,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:41:31,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:31,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:41:31,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:41:31,968 INFO L87 Difference]: Start difference. First operand 2380 states and 3388 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-23 03:41:37,133 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:41:37,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:37,349 INFO L93 Difference]: Finished difference Result 5854 states and 8329 transitions. [2021-11-23 03:41:37,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:41:37,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 232 [2021-11-23 03:41:37,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:37,393 INFO L225 Difference]: With dead ends: 5854 [2021-11-23 03:41:37,393 INFO L226 Difference]: Without dead ends: 3531 [2021-11-23 03:41:37,413 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 [2021-11-23 03:41:37,415 INFO L933 BasicCegarLoop]: 1968 mSDtfsCounter, 1656 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 3520 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:37,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1656 Valid, 3520 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-23 03:41:37,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3531 states. [2021-11-23 03:41:37,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3531 to 3507. [2021-11-23 03:41:37,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 2164 states have (on average 1.3313308687615526) internal successors, (2881), 2185 states have internal predecessors, (2881), 1051 states have call successors, (1051), 290 states have call predecessors, (1051), 289 states have return successors, (1047), 1042 states have call predecessors, (1047), 1047 states have call successors, (1047) [2021-11-23 03:41:37,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 4979 transitions. [2021-11-23 03:41:37,648 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 4979 transitions. Word has length 232 [2021-11-23 03:41:37,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:37,649 INFO L470 AbstractCegarLoop]: Abstraction has 3507 states and 4979 transitions. [2021-11-23 03:41:37,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-23 03:41:37,650 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 4979 transitions. [2021-11-23 03:41:37,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-23 03:41:37,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:37,664 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:41:37,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:41:37,665 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:41:37,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:37,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1521959453, now seen corresponding path program 1 times [2021-11-23 03:41:37,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:37,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779096786] [2021-11-23 03:41:37,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:37,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1537 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1537 trivial. 0 not checked. [2021-11-23 03:41:38,227 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:38,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779096786] [2021-11-23 03:41:38,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779096786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:38,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:38,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:41:38,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436083826] [2021-11-23 03:41:38,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:38,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:41:38,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:38,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:41:38,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:41:38,231 INFO L87 Difference]: Start difference. First operand 3507 states and 4979 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) [2021-11-23 03:41:41,487 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:41:44,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:41:46,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:46,033 INFO L93 Difference]: Finished difference Result 3513 states and 4984 transitions. [2021-11-23 03:41:46,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:41:46,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 262 [2021-11-23 03:41:46,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:46,067 INFO L225 Difference]: With dead ends: 3513 [2021-11-23 03:41:46,067 INFO L226 Difference]: Without dead ends: 3511 [2021-11-23 03:41:46,071 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 [2021-11-23 03:41:46,075 INFO L933 BasicCegarLoop]: 1561 mSDtfsCounter, 1740 mSDsluCounter, 3592 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 4673 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:46,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1748 Valid, 4673 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2021-11-23 03:41:46,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3511 states. [2021-11-23 03:41:46,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3511 to 3511. [2021-11-23 03:41:46,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3511 states, 2167 states have (on average 1.3308721735117675) internal successors, (2884), 2188 states have internal predecessors, (2884), 1051 states have call successors, (1051), 291 states have call predecessors, (1051), 290 states have return successors, (1047), 1042 states have call predecessors, (1047), 1047 states have call successors, (1047) [2021-11-23 03:41:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3511 states to 3511 states and 4982 transitions. [2021-11-23 03:41:46,336 INFO L78 Accepts]: Start accepts. Automaton has 3511 states and 4982 transitions. Word has length 262 [2021-11-23 03:41:46,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:46,341 INFO L470 AbstractCegarLoop]: Abstraction has 3511 states and 4982 transitions. [2021-11-23 03:41:46,341 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) [2021-11-23 03:41:46,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3511 states and 4982 transitions. [2021-11-23 03:41:46,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-23 03:41:46,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:46,352 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:41:46,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:41:46,353 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:41:46,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:46,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1867292099, now seen corresponding path program 1 times [2021-11-23 03:41:46,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:46,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785253289] [2021-11-23 03:41:46,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:46,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:46,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2021-11-23 03:41:46,644 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:46,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785253289] [2021-11-23 03:41:46,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785253289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:46,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:46,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:41:46,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459986550] [2021-11-23 03:41:46,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:46,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:41:46,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:46,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:41:46,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:41:46,648 INFO L87 Difference]: Start difference. First operand 3511 states and 4982 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-23 03:41:49,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:41:50,909 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:41:52,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:41:53,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:53,544 INFO L93 Difference]: Finished difference Result 7386 states and 10341 transitions. [2021-11-23 03:41:53,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:41:53,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 273 [2021-11-23 03:41:53,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:53,582 INFO L225 Difference]: With dead ends: 7386 [2021-11-23 03:41:53,582 INFO L226 Difference]: Without dead ends: 3932 [2021-11-23 03:41:53,606 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 [2021-11-23 03:41:53,607 INFO L933 BasicCegarLoop]: 1767 mSDtfsCounter, 741 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 3292 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:53,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 3292 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-11-23 03:41:53,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2021-11-23 03:41:53,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 3902. [2021-11-23 03:41:53,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3902 states, 2383 states have (on average 1.3000419639110365) internal successors, (3098), 2415 states have internal predecessors, (3098), 1139 states have call successors, (1139), 378 states have call predecessors, (1139), 377 states have return successors, (1135), 1118 states have call predecessors, (1135), 1135 states have call successors, (1135) [2021-11-23 03:41:53,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3902 states to 3902 states and 5372 transitions. [2021-11-23 03:41:53,909 INFO L78 Accepts]: Start accepts. Automaton has 3902 states and 5372 transitions. Word has length 273 [2021-11-23 03:41:53,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:53,910 INFO L470 AbstractCegarLoop]: Abstraction has 3902 states and 5372 transitions. [2021-11-23 03:41:53,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-23 03:41:53,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3902 states and 5372 transitions. [2021-11-23 03:41:53,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-11-23 03:41:53,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:53,919 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:41:53,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:41:53,920 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:41:53,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:53,921 INFO L85 PathProgramCache]: Analyzing trace with hash -807400372, now seen corresponding path program 1 times [2021-11-23 03:41:53,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:53,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183215418] [2021-11-23 03:41:53,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:53,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1538 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1536 trivial. 0 not checked. [2021-11-23 03:41:54,356 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:54,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183215418] [2021-11-23 03:41:54,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183215418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:54,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:54,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:41:54,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714467182] [2021-11-23 03:41:54,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:54,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:41:54,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:54,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:41:54,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:41:54,361 INFO L87 Difference]: Start difference. First operand 3902 states and 5372 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) [2021-11-23 03:41:58,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:00,777 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:42:03,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:05,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:05,169 INFO L93 Difference]: Finished difference Result 3908 states and 5377 transitions. [2021-11-23 03:42:05,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:42:05,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 266 [2021-11-23 03:42:05,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:05,205 INFO L225 Difference]: With dead ends: 3908 [2021-11-23 03:42:05,206 INFO L226 Difference]: Without dead ends: 3906 [2021-11-23 03:42:05,209 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 [2021-11-23 03:42:05,210 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 1735 mSDsluCounter, 3592 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1742 SdHoareTripleChecker+Valid, 4676 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:05,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1742 Valid, 4676 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 735 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2021-11-23 03:42:05,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3906 states. [2021-11-23 03:42:05,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3906 to 3906. [2021-11-23 03:42:05,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3906 states, 2386 states have (on average 1.2996647108130763) internal successors, (3101), 2418 states have internal predecessors, (3101), 1139 states have call successors, (1139), 379 states have call predecessors, (1139), 378 states have return successors, (1135), 1118 states have call predecessors, (1135), 1135 states have call successors, (1135) [2021-11-23 03:42:05,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3906 states to 3906 states and 5375 transitions. [2021-11-23 03:42:05,551 INFO L78 Accepts]: Start accepts. Automaton has 3906 states and 5375 transitions. Word has length 266 [2021-11-23 03:42:05,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:05,553 INFO L470 AbstractCegarLoop]: Abstraction has 3906 states and 5375 transitions. [2021-11-23 03:42:05,553 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) [2021-11-23 03:42:05,553 INFO L276 IsEmpty]: Start isEmpty. Operand 3906 states and 5375 transitions. [2021-11-23 03:42:05,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-23 03:42:05,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:05,560 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:42:05,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:42:05,561 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:42:05,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:05,562 INFO L85 PathProgramCache]: Analyzing trace with hash -843704145, now seen corresponding path program 1 times [2021-11-23 03:42:05,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:05,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878071719] [2021-11-23 03:42:05,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:05,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:05,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1544 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2021-11-23 03:42:05,972 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:05,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878071719] [2021-11-23 03:42:05,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878071719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:05,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:05,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:42:05,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596370267] [2021-11-23 03:42:05,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:05,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:42:05,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:05,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:42:05,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:42:05,975 INFO L87 Difference]: Start difference. First operand 3906 states and 5375 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) [2021-11-23 03:42:10,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:13,265 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:13,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:14,000 INFO L93 Difference]: Finished difference Result 7404 states and 10227 transitions. [2021-11-23 03:42:14,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:42:14,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 271 [2021-11-23 03:42:14,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:14,088 INFO L225 Difference]: With dead ends: 7404 [2021-11-23 03:42:14,088 INFO L226 Difference]: Without dead ends: 7402 [2021-11-23 03:42:14,092 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 [2021-11-23 03:42:14,094 INFO L933 BasicCegarLoop]: 1928 mSDtfsCounter, 1725 mSDsluCounter, 6062 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 7276 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:14,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1733 Valid, 7276 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 970 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2021-11-23 03:42:14,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7402 states. [2021-11-23 03:42:14,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7402 to 7340. [2021-11-23 03:42:14,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7340 states, 4501 states have (on average 1.30726505221062) internal successors, (5884), 4565 states have internal predecessors, (5884), 2137 states have call successors, (2137), 701 states have call predecessors, (2137), 699 states have return successors, (2133), 2093 states have call predecessors, (2133), 2129 states have call successors, (2133) [2021-11-23 03:42:14,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7340 states to 7340 states and 10154 transitions. [2021-11-23 03:42:14,568 INFO L78 Accepts]: Start accepts. Automaton has 7340 states and 10154 transitions. Word has length 271 [2021-11-23 03:42:14,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:14,569 INFO L470 AbstractCegarLoop]: Abstraction has 7340 states and 10154 transitions. [2021-11-23 03:42:14,570 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) [2021-11-23 03:42:14,570 INFO L276 IsEmpty]: Start isEmpty. Operand 7340 states and 10154 transitions. [2021-11-23 03:42:14,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-11-23 03:42:14,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:14,578 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] [2021-11-23 03:42:14,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:42:14,579 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:42:14,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:14,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1114424232, now seen corresponding path program 1 times [2021-11-23 03:42:14,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:14,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854812742] [2021-11-23 03:42:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:14,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:14,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1549 trivial. 0 not checked. [2021-11-23 03:42:14,968 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:14,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854812742] [2021-11-23 03:42:14,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854812742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:14,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:14,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:42:14,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795661665] [2021-11-23 03:42:14,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:14,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:42:14,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:14,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:42:14,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:42:14,971 INFO L87 Difference]: Start difference. First operand 7340 states and 10154 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) [2021-11-23 03:42:21,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:23,755 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:24,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:24,105 INFO L93 Difference]: Finished difference Result 7350 states and 10163 transitions. [2021-11-23 03:42:24,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:42:24,106 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 [2021-11-23 03:42:24,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:24,148 INFO L225 Difference]: With dead ends: 7350 [2021-11-23 03:42:24,148 INFO L226 Difference]: Without dead ends: 7348 [2021-11-23 03:42:24,153 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 [2021-11-23 03:42:24,154 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 1735 mSDsluCounter, 3592 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 4676 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:24,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1740 Valid, 4676 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 735 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2021-11-23 03:42:24,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7348 states. [2021-11-23 03:42:24,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7348 to 7348. [2021-11-23 03:42:24,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7348 states, 4507 states have (on average 1.3068560017750166) internal successors, (5890), 4571 states have internal predecessors, (5890), 2137 states have call successors, (2137), 703 states have call predecessors, (2137), 701 states have return successors, (2133), 2093 states have call predecessors, (2133), 2129 states have call successors, (2133) [2021-11-23 03:42:24,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7348 states to 7348 states and 10160 transitions. [2021-11-23 03:42:24,733 INFO L78 Accepts]: Start accepts. Automaton has 7348 states and 10160 transitions. Word has length 277 [2021-11-23 03:42:24,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:24,734 INFO L470 AbstractCegarLoop]: Abstraction has 7348 states and 10160 transitions. [2021-11-23 03:42:24,734 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) [2021-11-23 03:42:24,734 INFO L276 IsEmpty]: Start isEmpty. Operand 7348 states and 10160 transitions. [2021-11-23 03:42:24,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-23 03:42:24,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:24,743 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] [2021-11-23 03:42:24,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:42:24,743 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:42:24,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:24,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1321898353, now seen corresponding path program 1 times [2021-11-23 03:42:24,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:24,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514894669] [2021-11-23 03:42:24,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:24,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:25,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2021-11-23 03:42:25,136 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:25,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514894669] [2021-11-23 03:42:25,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514894669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:25,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:25,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:42:25,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127869154] [2021-11-23 03:42:25,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:25,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:42:25,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:25,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:42:25,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:42:25,140 INFO L87 Difference]: Start difference. First operand 7348 states and 10160 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) [2021-11-23 03:42:28,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:33,280 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:35,326 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 [] [2021-11-23 03:42:36,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:36,692 INFO L93 Difference]: Finished difference Result 7446 states and 10264 transitions. [2021-11-23 03:42:36,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:42:36,692 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 [2021-11-23 03:42:36,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:36,742 INFO L225 Difference]: With dead ends: 7446 [2021-11-23 03:42:36,742 INFO L226 Difference]: Without dead ends: 7444 [2021-11-23 03:42:36,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:42:36,751 INFO L933 BasicCegarLoop]: 1932 mSDtfsCounter, 1735 mSDsluCounter, 6071 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 7288 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:36,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1739 Valid, 7288 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 969 Invalid, 3 Unknown, 0 Unchecked, 11.2s Time] [2021-11-23 03:42:36,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7444 states. [2021-11-23 03:42:37,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7444 to 7432. [2021-11-23 03:42:37,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7432 states, 4542 states have (on average 1.3044914134742405) internal successors, (5925), 4606 states have internal predecessors, (5925), 2167 states have call successors, (2167), 722 states have call predecessors, (2167), 720 states have return successors, (2159), 2123 states have call predecessors, (2159), 2159 states have call successors, (2159) [2021-11-23 03:42:37,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7432 states to 7432 states and 10251 transitions. [2021-11-23 03:42:37,385 INFO L78 Accepts]: Start accepts. Automaton has 7432 states and 10251 transitions. Word has length 281 [2021-11-23 03:42:37,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:37,387 INFO L470 AbstractCegarLoop]: Abstraction has 7432 states and 10251 transitions. [2021-11-23 03:42:37,387 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) [2021-11-23 03:42:37,387 INFO L276 IsEmpty]: Start isEmpty. Operand 7432 states and 10251 transitions. [2021-11-23 03:42:37,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-23 03:42:37,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:37,394 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:42:37,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:42:37,394 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:42:37,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:37,395 INFO L85 PathProgramCache]: Analyzing trace with hash -780817672, now seen corresponding path program 1 times [2021-11-23 03:42:37,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:37,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576581074] [2021-11-23 03:42:37,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:37,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2021-11-23 03:42:37,750 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:37,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576581074] [2021-11-23 03:42:37,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576581074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:37,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:37,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:42:37,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659551855] [2021-11-23 03:42:37,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:37,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:42:37,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:37,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:42:37,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:42:37,753 INFO L87 Difference]: Start difference. First operand 7432 states and 10251 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-23 03:42:42,581 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 [] [2021-11-23 03:42:45,094 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 [] [2021-11-23 03:42:45,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:45,694 INFO L93 Difference]: Finished difference Result 7450 states and 10272 transitions. [2021-11-23 03:42:45,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:42:45,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 287 [2021-11-23 03:42:45,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:45,734 INFO L225 Difference]: With dead ends: 7450 [2021-11-23 03:42:45,734 INFO L226 Difference]: Without dead ends: 7448 [2021-11-23 03:42:45,739 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 [2021-11-23 03:42:45,740 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 1725 mSDsluCounter, 3606 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 4686 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:45,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1730 Valid, 4686 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 739 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2021-11-23 03:42:45,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7448 states. [2021-11-23 03:42:46,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7448 to 7440. [2021-11-23 03:42:46,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7440 states, 4548 states have (on average 1.304089709762533) internal successors, (5931), 4612 states have internal predecessors, (5931), 2167 states have call successors, (2167), 724 states have call predecessors, (2167), 722 states have return successors, (2159), 2123 states have call predecessors, (2159), 2159 states have call successors, (2159) [2021-11-23 03:42:46,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7440 states to 7440 states and 10257 transitions. [2021-11-23 03:42:46,253 INFO L78 Accepts]: Start accepts. Automaton has 7440 states and 10257 transitions. Word has length 287 [2021-11-23 03:42:46,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:46,254 INFO L470 AbstractCegarLoop]: Abstraction has 7440 states and 10257 transitions. [2021-11-23 03:42:46,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-23 03:42:46,254 INFO L276 IsEmpty]: Start isEmpty. Operand 7440 states and 10257 transitions. [2021-11-23 03:42:46,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-23 03:42:46,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:46,262 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 7, 6, 6, 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] [2021-11-23 03:42:46,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:42:46,263 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:42:46,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:46,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1156129923, now seen corresponding path program 1 times [2021-11-23 03:42:46,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:46,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595793791] [2021-11-23 03:42:46,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:46,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:46,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1609 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1597 trivial. 0 not checked. [2021-11-23 03:42:46,805 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:46,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595793791] [2021-11-23 03:42:46,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595793791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:46,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:46,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:42:46,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87308324] [2021-11-23 03:42:46,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:46,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:42:46,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:46,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:42:46,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:42:46,809 INFO L87 Difference]: Start difference. First operand 7440 states and 10257 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, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-23 03:42:50,360 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:53,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:54,441 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:55,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:55,474 INFO L93 Difference]: Finished difference Result 7504 states and 10315 transitions. [2021-11-23 03:42:55,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:42:55,475 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, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 292 [2021-11-23 03:42:55,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:55,515 INFO L225 Difference]: With dead ends: 7504 [2021-11-23 03:42:55,515 INFO L226 Difference]: Without dead ends: 7502 [2021-11-23 03:42:55,522 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 [2021-11-23 03:42:55,523 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 1717 mSDsluCounter, 3621 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 4701 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:55,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1719 Valid, 4701 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2021-11-23 03:42:55,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7502 states. [2021-11-23 03:42:56,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7502 to 7500. [2021-11-23 03:42:56,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7500 states, 4590 states have (on average 1.303921568627451) internal successors, (5985), 4654 states have internal predecessors, (5985), 2167 states have call successors, (2167), 742 states have call predecessors, (2167), 740 states have return successors, (2159), 2123 states have call predecessors, (2159), 2159 states have call successors, (2159) [2021-11-23 03:42:56,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7500 states to 7500 states and 10311 transitions. [2021-11-23 03:42:56,126 INFO L78 Accepts]: Start accepts. Automaton has 7500 states and 10311 transitions. Word has length 292 [2021-11-23 03:42:56,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:56,127 INFO L470 AbstractCegarLoop]: Abstraction has 7500 states and 10311 transitions. [2021-11-23 03:42:56,127 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, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-23 03:42:56,127 INFO L276 IsEmpty]: Start isEmpty. Operand 7500 states and 10311 transitions. [2021-11-23 03:42:56,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-23 03:42:56,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:56,136 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 8, 7, 7, 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] [2021-11-23 03:42:56,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 03:42:56,137 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:42:56,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:56,137 INFO L85 PathProgramCache]: Analyzing trace with hash -428674674, now seen corresponding path program 1 times [2021-11-23 03:42:56,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:56,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110632559] [2021-11-23 03:42:56,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:56,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:56,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1646 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1632 trivial. 0 not checked. [2021-11-23 03:42:56,485 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:56,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110632559] [2021-11-23 03:42:56,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110632559] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:56,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:56,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:42:56,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012396425] [2021-11-23 03:42:56,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:56,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:42:56,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:56,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:42:56,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:42:56,489 INFO L87 Difference]: Start difference. First operand 7500 states and 10311 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, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-23 03:43:01,345 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:04,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:04,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:43:04,532 INFO L93 Difference]: Finished difference Result 7539 states and 10339 transitions. [2021-11-23 03:43:04,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:43:04,532 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, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 296 [2021-11-23 03:43:04,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:43:04,569 INFO L225 Difference]: With dead ends: 7539 [2021-11-23 03:43:04,569 INFO L226 Difference]: Without dead ends: 7535 [2021-11-23 03:43:04,573 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 [2021-11-23 03:43:04,574 INFO L933 BasicCegarLoop]: 1569 mSDtfsCounter, 1723 mSDsluCounter, 3622 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 4707 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:43:04,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1724 Valid, 4707 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 741 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2021-11-23 03:43:04,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7535 states. [2021-11-23 03:43:05,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7535 to 7533. [2021-11-23 03:43:05,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7533 states, 4613 states have (on average 1.3021894645566876) internal successors, (6007), 4676 states have internal predecessors, (6007), 2167 states have call successors, (2167), 753 states have call predecessors, (2167), 750 states have return successors, (2159), 2123 states have call predecessors, (2159), 2159 states have call successors, (2159) [2021-11-23 03:43:05,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7533 states to 7533 states and 10333 transitions. [2021-11-23 03:43:05,128 INFO L78 Accepts]: Start accepts. Automaton has 7533 states and 10333 transitions. Word has length 296 [2021-11-23 03:43:05,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:43:05,129 INFO L470 AbstractCegarLoop]: Abstraction has 7533 states and 10333 transitions. [2021-11-23 03:43:05,130 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, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-23 03:43:05,130 INFO L276 IsEmpty]: Start isEmpty. Operand 7533 states and 10333 transitions. [2021-11-23 03:43:05,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-23 03:43:05,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:43:05,139 INFO L514 BasicCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 3, 3, 3, 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] [2021-11-23 03:43:05,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 03:43:05,140 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:43:05,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:43:05,141 INFO L85 PathProgramCache]: Analyzing trace with hash 517098716, now seen corresponding path program 1 times [2021-11-23 03:43:05,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:43:05,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636583689] [2021-11-23 03:43:05,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:05,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:43:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:05,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1597 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1590 trivial. 0 not checked. [2021-11-23 03:43:05,501 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:43:05,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636583689] [2021-11-23 03:43:05,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636583689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:43:05,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:43:05,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:43:05,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563130200] [2021-11-23 03:43:05,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:43:05,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:43:05,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:43:05,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:43:05,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:43:05,504 INFO L87 Difference]: Start difference. First operand 7533 states and 10333 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-23 03:43:09,293 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:14,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:15,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:43:15,068 INFO L93 Difference]: Finished difference Result 18190 states and 24978 transitions. [2021-11-23 03:43:15,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:43:15,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 300 [2021-11-23 03:43:15,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:43:15,125 INFO L225 Difference]: With dead ends: 18190 [2021-11-23 03:43:15,126 INFO L226 Difference]: Without dead ends: 11048 [2021-11-23 03:43:15,165 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 [2021-11-23 03:43:15,166 INFO L933 BasicCegarLoop]: 3007 mSDtfsCounter, 1664 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1664 SdHoareTripleChecker+Valid, 4557 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:43:15,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1664 Valid, 4557 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2021-11-23 03:43:15,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11048 states. [2021-11-23 03:43:15,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11048 to 10948. [2021-11-23 03:43:16,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10948 states, 6698 states have (on average 1.3036727381307853) internal successors, (8732), 6796 states have internal predecessors, (8732), 3157 states have call successors, (3157), 1093 states have call predecessors, (3157), 1090 states have return successors, (3149), 3088 states have call predecessors, (3149), 3149 states have call successors, (3149) [2021-11-23 03:43:16,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10948 states to 10948 states and 15038 transitions. [2021-11-23 03:43:16,066 INFO L78 Accepts]: Start accepts. Automaton has 10948 states and 15038 transitions. Word has length 300 [2021-11-23 03:43:16,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:43:16,067 INFO L470 AbstractCegarLoop]: Abstraction has 10948 states and 15038 transitions. [2021-11-23 03:43:16,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-23 03:43:16,068 INFO L276 IsEmpty]: Start isEmpty. Operand 10948 states and 15038 transitions. [2021-11-23 03:43:16,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-11-23 03:43:16,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:43:16,081 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 9, 8, 8, 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] [2021-11-23 03:43:16,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 03:43:16,082 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:43:16,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:43:16,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1078091185, now seen corresponding path program 1 times [2021-11-23 03:43:16,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:43:16,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164447791] [2021-11-23 03:43:16,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:16,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:43:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1664 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1648 trivial. 0 not checked. [2021-11-23 03:43:16,427 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:43:16,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164447791] [2021-11-23 03:43:16,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164447791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:43:16,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:43:16,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:43:16,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768312184] [2021-11-23 03:43:16,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:43:16,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:43:16,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:43:16,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:43:16,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:43:16,431 INFO L87 Difference]: Start difference. First operand 10948 states and 15038 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, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-23 03:43:23,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:23,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:43:23,935 INFO L93 Difference]: Finished difference Result 10954 states and 15043 transitions. [2021-11-23 03:43:23,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:43:23,936 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, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 301 [2021-11-23 03:43:23,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:43:23,986 INFO L225 Difference]: With dead ends: 10954 [2021-11-23 03:43:23,987 INFO L226 Difference]: Without dead ends: 10778 [2021-11-23 03:43:23,994 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 [2021-11-23 03:43:23,995 INFO L933 BasicCegarLoop]: 1565 mSDtfsCounter, 1735 mSDsluCounter, 3594 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 4679 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:43:23,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1735 Valid, 4679 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-11-23 03:43:24,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10778 states. [2021-11-23 03:43:24,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10778 to 10778. [2021-11-23 03:43:24,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10778 states, 6615 states have (on average 1.3038548752834467) internal successors, (8625), 6690 states have internal predecessors, (8625), 3099 states have call successors, (3099), 1062 states have call predecessors, (3099), 1061 states have return successors, (3095), 3049 states have call predecessors, (3095), 3095 states have call successors, (3095) [2021-11-23 03:43:24,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10778 states to 10778 states and 14819 transitions. [2021-11-23 03:43:24,917 INFO L78 Accepts]: Start accepts. Automaton has 10778 states and 14819 transitions. Word has length 301 [2021-11-23 03:43:24,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:43:24,918 INFO L470 AbstractCegarLoop]: Abstraction has 10778 states and 14819 transitions. [2021-11-23 03:43:24,918 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, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-23 03:43:24,919 INFO L276 IsEmpty]: Start isEmpty. Operand 10778 states and 14819 transitions. [2021-11-23 03:43:24,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-11-23 03:43:24,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:43:24,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:43:24,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 03:43:24,932 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:43:24,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:43:24,933 INFO L85 PathProgramCache]: Analyzing trace with hash -908986305, now seen corresponding path program 1 times [2021-11-23 03:43:24,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:43:24,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824564184] [2021-11-23 03:43:24,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:24,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:43:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:25,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1599 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1599 trivial. 0 not checked. [2021-11-23 03:43:25,176 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:43:25,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824564184] [2021-11-23 03:43:25,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824564184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:43:25,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:43:25,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:43:25,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038737111] [2021-11-23 03:43:25,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:43:25,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:43:25,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:43:25,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:43:25,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:43:25,180 INFO L87 Difference]: Start difference. First operand 10778 states and 14819 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-23 03:43:28,511 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 [] [2021-11-23 03:43:31,069 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 [] [2021-11-23 03:43:31,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:43:31,689 INFO L93 Difference]: Finished difference Result 29624 states and 40899 transitions. [2021-11-23 03:43:31,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:43:31,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 318 [2021-11-23 03:43:31,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:43:31,782 INFO L225 Difference]: With dead ends: 29624 [2021-11-23 03:43:31,782 INFO L226 Difference]: Without dead ends: 18903 [2021-11-23 03:43:31,829 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 [2021-11-23 03:43:31,830 INFO L933 BasicCegarLoop]: 1907 mSDtfsCounter, 1617 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 3440 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:43:31,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1619 Valid, 3440 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 518 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2021-11-23 03:43:31,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18903 states. [2021-11-23 03:43:33,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18903 to 18649. [2021-11-23 03:43:33,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18649 states, 11611 states have (on average 1.309878563431229) internal successors, (15209), 11777 states have internal predecessors, (15209), 5258 states have call successors, (5258), 1778 states have call predecessors, (5258), 1777 states have return successors, (5266), 5139 states have call predecessors, (5266), 5254 states have call successors, (5266) [2021-11-23 03:43:33,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18649 states to 18649 states and 25733 transitions. [2021-11-23 03:43:33,217 INFO L78 Accepts]: Start accepts. Automaton has 18649 states and 25733 transitions. Word has length 318 [2021-11-23 03:43:33,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:43:33,218 INFO L470 AbstractCegarLoop]: Abstraction has 18649 states and 25733 transitions. [2021-11-23 03:43:33,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-23 03:43:33,218 INFO L276 IsEmpty]: Start isEmpty. Operand 18649 states and 25733 transitions. [2021-11-23 03:43:33,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-11-23 03:43:33,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:43:33,241 INFO L514 BasicCegarLoop]: trace histogram [26, 19, 19, 19, 19, 19, 19, 4, 4, 4, 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] [2021-11-23 03:43:33,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 03:43:33,242 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:43:33,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:43:33,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1084195615, now seen corresponding path program 1 times [2021-11-23 03:43:33,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:43:33,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75070953] [2021-11-23 03:43:33,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:33,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:43:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:33,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1710 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1695 trivial. 0 not checked. [2021-11-23 03:43:33,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:43:33,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75070953] [2021-11-23 03:43:33,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75070953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:43:33,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:43:33,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:43:33,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059429318] [2021-11-23 03:43:33,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:43:33,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:43:33,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:43:33,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:43:33,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:43:33,554 INFO L87 Difference]: Start difference. First operand 18649 states and 25733 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-23 03:43:39,235 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:42,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:43:44,363 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:43:46,634 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:51,459 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:54,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:57,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:57,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:43:57,950 INFO L93 Difference]: Finished difference Result 43145 states and 59545 transitions. [2021-11-23 03:43:57,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:43:57,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) Word has length 322 [2021-11-23 03:43:57,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:43:58,075 INFO L225 Difference]: With dead ends: 43145 [2021-11-23 03:43:58,075 INFO L226 Difference]: Without dead ends: 24601 [2021-11-23 03:43:58,151 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 [2021-11-23 03:43:58,152 INFO L933 BasicCegarLoop]: 2990 mSDtfsCounter, 1645 mSDsluCounter, 8663 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 10514 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:43:58,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1645 Valid, 10514 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1622 Invalid, 4 Unknown, 0 Unchecked, 23.0s Time] [2021-11-23 03:43:58,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24601 states. [2021-11-23 03:43:59,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24601 to 24520. [2021-11-23 03:43:59,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24520 states, 15245 states have (on average 1.3098064939324368) internal successors, (19968), 15470 states have internal predecessors, (19968), 6932 states have call successors, (6932), 2333 states have call predecessors, (6932), 2340 states have return successors, (6952), 6777 states have call predecessors, (6952), 6928 states have call successors, (6952) [2021-11-23 03:44:00,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24520 states to 24520 states and 33852 transitions. [2021-11-23 03:44:00,108 INFO L78 Accepts]: Start accepts. Automaton has 24520 states and 33852 transitions. Word has length 322 [2021-11-23 03:44:00,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:00,109 INFO L470 AbstractCegarLoop]: Abstraction has 24520 states and 33852 transitions. [2021-11-23 03:44:00,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-23 03:44:00,109 INFO L276 IsEmpty]: Start isEmpty. Operand 24520 states and 33852 transitions. [2021-11-23 03:44:00,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-11-23 03:44:00,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:00,128 INFO L514 BasicCegarLoop]: trace histogram [26, 19, 19, 19, 19, 19, 19, 4, 4, 4, 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] [2021-11-23 03:44:00,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 03:44:00,129 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:44:00,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:00,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1879663054, now seen corresponding path program 1 times [2021-11-23 03:44:00,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:00,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357951259] [2021-11-23 03:44:00,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:00,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:00,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1710 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1695 trivial. 0 not checked. [2021-11-23 03:44:00,595 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:00,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357951259] [2021-11-23 03:44:00,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357951259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:00,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:00,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:44:00,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858510827] [2021-11-23 03:44:00,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:00,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:44:00,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:00,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:44:00,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:44:00,598 INFO L87 Difference]: Start difference. First operand 24520 states and 33852 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-23 03:44:07,140 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:10,778 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:15,884 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:18,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:20,303 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 [] [2021-11-23 03:44:22,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:22,026 INFO L93 Difference]: Finished difference Result 55177 states and 76147 transitions. [2021-11-23 03:44:22,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:44:22,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) Word has length 325 [2021-11-23 03:44:22,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:22,199 INFO L225 Difference]: With dead ends: 55177 [2021-11-23 03:44:22,200 INFO L226 Difference]: Without dead ends: 30762 [2021-11-23 03:44:22,321 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 [2021-11-23 03:44:22,322 INFO L933 BasicCegarLoop]: 2958 mSDtfsCounter, 1662 mSDsluCounter, 8567 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 10404 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:22,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1662 Valid, 10404 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1604 Invalid, 4 Unknown, 0 Unchecked, 19.7s Time] [2021-11-23 03:44:22,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30762 states. [2021-11-23 03:44:24,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30762 to 30681. [2021-11-23 03:44:24,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30681 states, 19051 states have (on average 1.3088551782058684) internal successors, (24935), 19335 states have internal predecessors, (24935), 8676 states have call successors, (8676), 2936 states have call predecessors, (8676), 2951 states have return successors, (8708), 8485 states have call predecessors, (8708), 8672 states have call successors, (8708) [2021-11-23 03:44:24,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30681 states to 30681 states and 42319 transitions. [2021-11-23 03:44:24,643 INFO L78 Accepts]: Start accepts. Automaton has 30681 states and 42319 transitions. Word has length 325 [2021-11-23 03:44:24,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:24,644 INFO L470 AbstractCegarLoop]: Abstraction has 30681 states and 42319 transitions. [2021-11-23 03:44:24,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-23 03:44:24,644 INFO L276 IsEmpty]: Start isEmpty. Operand 30681 states and 42319 transitions. [2021-11-23 03:44:24,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-11-23 03:44:24,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:24,664 INFO L514 BasicCegarLoop]: trace histogram [26, 19, 19, 19, 19, 19, 19, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:44:24,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 03:44:24,664 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:44:24,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:24,665 INFO L85 PathProgramCache]: Analyzing trace with hash 288077422, now seen corresponding path program 1 times [2021-11-23 03:44:24,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:24,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982622697] [2021-11-23 03:44:24,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:24,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:25,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1709 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1709 trivial. 0 not checked. [2021-11-23 03:44:25,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:25,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982622697] [2021-11-23 03:44:25,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982622697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:25,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:25,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:44:25,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739013818] [2021-11-23 03:44:25,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:25,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:44:25,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:25,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:44:25,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:44:25,078 INFO L87 Difference]: Start difference. First operand 30681 states and 42319 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-23 03:44:28,552 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:31,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:33,349 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:35,398 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:36,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:36,143 INFO L93 Difference]: Finished difference Result 30765 states and 42401 transitions. [2021-11-23 03:44:36,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:44:36,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 318 [2021-11-23 03:44:36,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:36,319 INFO L225 Difference]: With dead ends: 30765 [2021-11-23 03:44:36,319 INFO L226 Difference]: Without dead ends: 30763 [2021-11-23 03:44:36,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:44:36,342 INFO L933 BasicCegarLoop]: 1558 mSDtfsCounter, 1700 mSDsluCounter, 3613 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 4687 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:36,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1702 Valid, 4687 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 733 Invalid, 2 Unknown, 0 Unchecked, 9.7s Time] [2021-11-23 03:44:36,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30763 states. [2021-11-23 03:44:38,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30763 to 30761. [2021-11-23 03:44:38,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30761 states, 19111 states have (on average 1.3071529485636544) internal successors, (24981), 19395 states have internal predecessors, (24981), 8676 states have call successors, (8676), 2956 states have call predecessors, (8676), 2971 states have return successors, (8708), 8485 states have call predecessors, (8708), 8672 states have call successors, (8708) [2021-11-23 03:44:38,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30761 states to 30761 states and 42365 transitions. [2021-11-23 03:44:38,353 INFO L78 Accepts]: Start accepts. Automaton has 30761 states and 42365 transitions. Word has length 318 [2021-11-23 03:44:38,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:38,354 INFO L470 AbstractCegarLoop]: Abstraction has 30761 states and 42365 transitions. [2021-11-23 03:44:38,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-23 03:44:38,354 INFO L276 IsEmpty]: Start isEmpty. Operand 30761 states and 42365 transitions. [2021-11-23 03:44:38,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2021-11-23 03:44:38,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:38,383 INFO L514 BasicCegarLoop]: trace histogram [25, 20, 20, 20, 20, 20, 20, 6, 6, 3, 3, 3, 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] [2021-11-23 03:44:38,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 03:44:38,383 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:44:38,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:38,384 INFO L85 PathProgramCache]: Analyzing trace with hash 346457418, now seen corresponding path program 1 times [2021-11-23 03:44:38,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:38,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727283340] [2021-11-23 03:44:38,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:38,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1812 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1805 trivial. 0 not checked. [2021-11-23 03:44:38,646 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:38,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727283340] [2021-11-23 03:44:38,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727283340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:38,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:38,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:44:38,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898001002] [2021-11-23 03:44:38,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:38,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:44:38,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:38,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:44:38,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:38,649 INFO L87 Difference]: Start difference. First operand 30761 states and 42365 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-23 03:44:46,381 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 [] [2021-11-23 03:44:46,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:46,992 INFO L93 Difference]: Finished difference Result 69131 states and 94744 transitions. [2021-11-23 03:44:46,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:44:46,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 346 [2021-11-23 03:44:46,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:47,213 INFO L225 Difference]: With dead ends: 69131 [2021-11-23 03:44:47,213 INFO L226 Difference]: Without dead ends: 38475 [2021-11-23 03:44:47,309 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 [2021-11-23 03:44:47,310 INFO L933 BasicCegarLoop]: 2169 mSDtfsCounter, 758 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 3657 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:47,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 3657 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 646 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-23 03:44:47,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38475 states. [2021-11-23 03:44:49,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38475 to 38312. [2021-11-23 03:44:49,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38312 states, 23703 states have (on average 1.2941821710332027) internal successors, (30676), 24104 states have internal predecessors, (30676), 10718 states have call successors, (10718), 3865 states have call predecessors, (10718), 3888 states have return successors, (10758), 10423 states have call predecessors, (10758), 10714 states have call successors, (10758) [2021-11-23 03:44:49,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38312 states to 38312 states and 52152 transitions. [2021-11-23 03:44:49,922 INFO L78 Accepts]: Start accepts. Automaton has 38312 states and 52152 transitions. Word has length 346 [2021-11-23 03:44:49,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:49,923 INFO L470 AbstractCegarLoop]: Abstraction has 38312 states and 52152 transitions. [2021-11-23 03:44:49,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-23 03:44:49,923 INFO L276 IsEmpty]: Start isEmpty. Operand 38312 states and 52152 transitions. [2021-11-23 03:44:49,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-11-23 03:44:49,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:49,941 INFO L514 BasicCegarLoop]: trace histogram [26, 19, 19, 19, 19, 19, 19, 4, 4, 4, 3, 3, 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] [2021-11-23 03:44:49,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 03:44:49,942 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:44:49,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:49,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1704405829, now seen corresponding path program 1 times [2021-11-23 03:44:49,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:49,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662746461] [2021-11-23 03:44:49,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:49,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:50,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1715 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1715 trivial. 0 not checked. [2021-11-23 03:44:50,252 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:50,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662746461] [2021-11-23 03:44:50,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662746461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:50,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:50,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:44:50,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132623314] [2021-11-23 03:44:50,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:50,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:44:50,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:50,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:44:50,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:44:50,256 INFO L87 Difference]: Start difference. First operand 38312 states and 52152 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, (42), 3 states have call predecessors, (42), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-23 03:44:56,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:59,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:01,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:03,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:05,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:05,082 INFO L93 Difference]: Finished difference Result 38314 states and 52153 transitions. [2021-11-23 03:45:05,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:45:05,083 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, (42), 3 states have call predecessors, (42), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 335 [2021-11-23 03:45:05,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:05,319 INFO L225 Difference]: With dead ends: 38314 [2021-11-23 03:45:05,320 INFO L226 Difference]: Without dead ends: 38312 [2021-11-23 03:45:05,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:45:05,352 INFO L933 BasicCegarLoop]: 1554 mSDtfsCounter, 16 mSDsluCounter, 5370 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 6205 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:05,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 6205 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 969 Invalid, 2 Unknown, 0 Unchecked, 12.9s Time] [2021-11-23 03:45:05,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38312 states. [2021-11-23 03:45:07,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38312 to 38312. [2021-11-23 03:45:07,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38312 states, 23703 states have (on average 1.2921571109142302) internal successors, (30628), 24104 states have internal predecessors, (30628), 10718 states have call successors, (10718), 3865 states have call predecessors, (10718), 3888 states have return successors, (10758), 10423 states have call predecessors, (10758), 10714 states have call successors, (10758) [2021-11-23 03:45:07,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38312 states to 38312 states and 52104 transitions. [2021-11-23 03:45:07,504 INFO L78 Accepts]: Start accepts. Automaton has 38312 states and 52104 transitions. Word has length 335 [2021-11-23 03:45:07,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:07,504 INFO L470 AbstractCegarLoop]: Abstraction has 38312 states and 52104 transitions. [2021-11-23 03:45:07,504 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, (42), 3 states have call predecessors, (42), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-23 03:45:07,505 INFO L276 IsEmpty]: Start isEmpty. Operand 38312 states and 52104 transitions. [2021-11-23 03:45:07,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2021-11-23 03:45:07,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:07,543 INFO L514 BasicCegarLoop]: trace histogram [27, 24, 24, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:07,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 03:45:07,544 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:45:07,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:07,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1563397190, now seen corresponding path program 1 times [2021-11-23 03:45:07,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:07,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312173291] [2021-11-23 03:45:07,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:07,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3205 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3205 trivial. 0 not checked. [2021-11-23 03:45:08,385 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:08,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312173291] [2021-11-23 03:45:08,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312173291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:08,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:45:08,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:45:08,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909898179] [2021-11-23 03:45:08,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:08,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:45:08,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:08,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:45:08,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:45:08,389 INFO L87 Difference]: Start difference. First operand 38312 states and 52104 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-23 03:45:14,266 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:17,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:18,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:18,206 INFO L93 Difference]: Finished difference Result 38332 states and 52134 transitions. [2021-11-23 03:45:18,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:45:18,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 522 [2021-11-23 03:45:18,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:18,352 INFO L225 Difference]: With dead ends: 38332 [2021-11-23 03:45:18,352 INFO L226 Difference]: Without dead ends: 38330 [2021-11-23 03:45:18,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:45:18,372 INFO L933 BasicCegarLoop]: 1554 mSDtfsCounter, 1645 mSDsluCounter, 3623 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 4689 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:18,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1649 Valid, 4689 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 736 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2021-11-23 03:45:18,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38330 states. [2021-11-23 03:45:20,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38330 to 38330. [2021-11-23 03:45:20,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38330 states, 23712 states have (on average 1.2912027665317138) internal successors, (30617), 24122 states have internal predecessors, (30617), 10718 states have call successors, (10718), 3865 states have call predecessors, (10718), 3898 states have return successors, (10778), 10423 states have call predecessors, (10778), 10714 states have call successors, (10778) [2021-11-23 03:45:20,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38330 states to 38330 states and 52113 transitions. [2021-11-23 03:45:20,649 INFO L78 Accepts]: Start accepts. Automaton has 38330 states and 52113 transitions. Word has length 522 [2021-11-23 03:45:20,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:20,650 INFO L470 AbstractCegarLoop]: Abstraction has 38330 states and 52113 transitions. [2021-11-23 03:45:20,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-23 03:45:20,650 INFO L276 IsEmpty]: Start isEmpty. Operand 38330 states and 52113 transitions. [2021-11-23 03:45:20,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2021-11-23 03:45:20,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:20,693 INFO L514 BasicCegarLoop]: trace histogram [28, 20, 20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:20,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 03:45:20,694 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:45:20,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:20,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1175506641, now seen corresponding path program 1 times [2021-11-23 03:45:20,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:20,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995573724] [2021-11-23 03:45:20,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:20,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:21,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2855 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2836 trivial. 0 not checked. [2021-11-23 03:45:21,350 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:21,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995573724] [2021-11-23 03:45:21,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995573724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:21,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:45:21,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:45:21,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714579172] [2021-11-23 03:45:21,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:21,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:45:21,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:21,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:45:21,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:45:21,354 INFO L87 Difference]: Start difference. First operand 38330 states and 52113 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-23 03:45:27,157 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:30,629 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:33,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:35,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:45:37,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:37,671 INFO L93 Difference]: Finished difference Result 102845 states and 145698 transitions. [2021-11-23 03:45:37,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:45:37,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 528 [2021-11-23 03:45:37,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:38,152 INFO L225 Difference]: With dead ends: 102845 [2021-11-23 03:45:38,152 INFO L226 Difference]: Without dead ends: 64620 [2021-11-23 03:45:38,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:45:38,273 INFO L933 BasicCegarLoop]: 2333 mSDtfsCounter, 1184 mSDsluCounter, 4450 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 316 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 6211 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:38,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1343 Valid, 6211 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 928 Invalid, 3 Unknown, 0 Unchecked, 12.8s Time] [2021-11-23 03:45:38,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64620 states. [2021-11-23 03:45:40,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64620 to 38370. [2021-11-23 03:45:40,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38370 states, 23752 states have (on average 1.2907123610643314) internal successors, (30657), 24162 states have internal predecessors, (30657), 10718 states have call successors, (10718), 3865 states have call predecessors, (10718), 3898 states have return successors, (10778), 10423 states have call predecessors, (10778), 10714 states have call successors, (10778) [2021-11-23 03:45:41,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38370 states to 38370 states and 52153 transitions. [2021-11-23 03:45:41,016 INFO L78 Accepts]: Start accepts. Automaton has 38370 states and 52153 transitions. Word has length 528 [2021-11-23 03:45:41,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:41,017 INFO L470 AbstractCegarLoop]: Abstraction has 38370 states and 52153 transitions. [2021-11-23 03:45:41,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-23 03:45:41,017 INFO L276 IsEmpty]: Start isEmpty. Operand 38370 states and 52153 transitions. [2021-11-23 03:45:41,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2021-11-23 03:45:41,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:41,071 INFO L514 BasicCegarLoop]: trace histogram [27, 25, 25, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:41,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 03:45:41,071 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:45:41,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:41,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1889553389, now seen corresponding path program 1 times [2021-11-23 03:45:41,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:41,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133848105] [2021-11-23 03:45:41,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:41,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3277 trivial. 0 not checked. [2021-11-23 03:45:41,413 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:41,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133848105] [2021-11-23 03:45:41,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133848105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:41,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:45:41,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:45:41,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879553366] [2021-11-23 03:45:41,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:41,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:45:41,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:41,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:45:41,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:45:41,418 INFO L87 Difference]: Start difference. First operand 38370 states and 52153 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-23 03:45:47,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:48,780 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:51,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:53,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:54,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:54,395 INFO L93 Difference]: Finished difference Result 38370 states and 52153 transitions. [2021-11-23 03:45:54,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:45:54,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 540 [2021-11-23 03:45:54,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:54,606 INFO L225 Difference]: With dead ends: 38370 [2021-11-23 03:45:54,606 INFO L226 Difference]: Without dead ends: 38368 [2021-11-23 03:45:54,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:45:54,619 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 24 mSDsluCounter, 5365 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 6200 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:54,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 6200 Invalid, 976 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 974 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2021-11-23 03:45:54,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38368 states. [2021-11-23 03:45:56,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38368 to 38368. [2021-11-23 03:45:56,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38368 states, 23751 states have (on average 1.2898825312618416) internal successors, (30636), 24160 states have internal predecessors, (30636), 10718 states have call successors, (10718), 3865 states have call predecessors, (10718), 3898 states have return successors, (10778), 10423 states have call predecessors, (10778), 10714 states have call successors, (10778) [2021-11-23 03:45:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38368 states to 38368 states and 52132 transitions. [2021-11-23 03:45:56,706 INFO L78 Accepts]: Start accepts. Automaton has 38368 states and 52132 transitions. Word has length 540 [2021-11-23 03:45:56,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:56,707 INFO L470 AbstractCegarLoop]: Abstraction has 38368 states and 52132 transitions. [2021-11-23 03:45:56,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-23 03:45:56,707 INFO L276 IsEmpty]: Start isEmpty. Operand 38368 states and 52132 transitions. [2021-11-23 03:45:56,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2021-11-23 03:45:56,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:56,772 INFO L514 BasicCegarLoop]: trace histogram [28, 20, 20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:56,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 03:45:56,772 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:45:56,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:56,773 INFO L85 PathProgramCache]: Analyzing trace with hash 177470226, now seen corresponding path program 1 times [2021-11-23 03:45:56,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:56,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538667758] [2021-11-23 03:45:56,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:56,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:57,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2857 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 2836 trivial. 0 not checked. [2021-11-23 03:45:57,103 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:57,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538667758] [2021-11-23 03:45:57,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538667758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:57,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:45:57,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:45:57,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571374545] [2021-11-23 03:45:57,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:57,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:45:57,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:57,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:45:57,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:45:57,106 INFO L87 Difference]: Start difference. First operand 38368 states and 52132 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-23 03:46:02,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:46:05,845 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:46:08,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:46:08,110 INFO L93 Difference]: Finished difference Result 84262 states and 120419 transitions. [2021-11-23 03:46:08,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:46:08,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 549 [2021-11-23 03:46:08,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:46:08,381 INFO L225 Difference]: With dead ends: 84262 [2021-11-23 03:46:08,381 INFO L226 Difference]: Without dead ends: 64858 [2021-11-23 03:46:08,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:46:08,454 INFO L933 BasicCegarLoop]: 2344 mSDtfsCounter, 1193 mSDsluCounter, 4456 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 316 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 6230 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:46:08,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1354 Valid, 6230 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 931 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2021-11-23 03:46:08,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64858 states. [2021-11-23 03:46:11,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64858 to 38408. [2021-11-23 03:46:11,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38408 states, 23791 states have (on average 1.2893951494262537) internal successors, (30676), 24200 states have internal predecessors, (30676), 10718 states have call successors, (10718), 3865 states have call predecessors, (10718), 3898 states have return successors, (10778), 10423 states have call predecessors, (10778), 10714 states have call successors, (10778) [2021-11-23 03:46:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38408 states to 38408 states and 52172 transitions. [2021-11-23 03:46:11,324 INFO L78 Accepts]: Start accepts. Automaton has 38408 states and 52172 transitions. Word has length 549 [2021-11-23 03:46:11,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:46:11,325 INFO L470 AbstractCegarLoop]: Abstraction has 38408 states and 52172 transitions. [2021-11-23 03:46:11,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-23 03:46:11,325 INFO L276 IsEmpty]: Start isEmpty. Operand 38408 states and 52172 transitions. [2021-11-23 03:46:11,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2021-11-23 03:46:11,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:46:11,376 INFO L514 BasicCegarLoop]: trace histogram [28, 21, 21, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:46:11,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 03:46:11,376 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:46:11,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:46:11,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2031011857, now seen corresponding path program 1 times [2021-11-23 03:46:11,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:46:11,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30874793] [2021-11-23 03:46:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:46:11,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:46:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:46:11,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2946 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 2905 trivial. 0 not checked. [2021-11-23 03:46:11,756 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:46:11,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30874793] [2021-11-23 03:46:11,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30874793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:46:11,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:46:11,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:46:11,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032478937] [2021-11-23 03:46:11,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:46:11,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:46:11,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:46:11,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:46:11,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:46:11,759 INFO L87 Difference]: Start difference. First operand 38408 states and 52172 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-23 03:46:19,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:46:19,840 INFO L93 Difference]: Finished difference Result 107115 states and 145814 transitions. [2021-11-23 03:46:19,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:46:19,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 568 [2021-11-23 03:46:19,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:46:20,311 INFO L225 Difference]: With dead ends: 107115 [2021-11-23 03:46:20,311 INFO L226 Difference]: Without dead ends: 68812 [2021-11-23 03:46:20,421 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 [2021-11-23 03:46:20,421 INFO L933 BasicCegarLoop]: 2363 mSDtfsCounter, 1477 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 3892 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:46:20,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1477 Valid, 3892 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-23 03:46:20,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68812 states.